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Everything you need to know about working with GTA ADU Builders in the Greater Toronto Area.
There is no single price, and any builder who quotes one before seeing your lot is guessing. A garden suite budget in Toronto is driven by four things: the finished size of the unit, how much of the servicing has to be trenched from the street or the house, what the soil and grading do to the foundation, and how tight the rear-yard access is for equipment and material. A narrow downtown lot with no laneway and mature trees costs materially more per square foot to build than a wide suburban lot with a side drive, even for the identical unit.
Soft costs - survey, arborist report, drawings, permit fees, engineering - land before a shovel moves and are worth budgeting for separately. We do a paid feasibility and site review first, then issue a fixed-scope price for design, permit and construction so the number you approve is the number you build to.
Related service: Garden Suites
Yes. Toronto permits garden suites city-wide as a form of additional residential unit on the rear portion of a lot that has no abutting laneway - that is the practical difference from a laneway house. Permission is not automatic, though: your lot has to satisfy the by-law tests for lot size, separation from the main house, setbacks, height, angular planes, tree protection and emergency-services access from the street.
Those tests are where most do-it-yourself projects stall, because a plan that looks reasonable on paper can fail on a single dimension and force a redesign or a Committee of Adjustment application. Provincial rules also allow up to three units on most single-family lots, which changes what you can combine on one property. The honest first step is a feasibility review against your actual survey, not a general answer - we run that review before any design work begins.
Related service: Garden Suites
The difference is access, and it decides which by-law applies to your property. A laneway house sits on a lot that backs or flanks onto a public laneway, and the laneway provides the servicing route and the emergency-access frontage. A garden suite is the equivalent unit for a lot with no laneway at all - the rules were written precisely so those properties were not excluded.
Because a garden suite has no rear access, the by-law leans harder on separation distance from the main dwelling, a clear and unobstructed path from the street for firefighters, and how services are run across the yard. Practically, that means garden suites often need more careful siting and can involve more trenching than a comparable laneway build. You do not choose between the two: your lot decides, and a look at your survey and the abutting laneway status settles it in one review.
Related service: Garden Suites
A garden suite delivers two kinds of value, and they behave differently. The first is income: a legal, self-contained unit produces rent every month, and in the GTA a second unit is usually the fastest way to make an existing lot pay. The second is resale, where the unit is valued as permanent, permitted floor area with its own kitchen, bathroom and entrance - appraisers treat a closed-permit legal suite very differently from an unpermitted conversion, which is one reason cutting the permit corner is expensive later.
What we will not do is quote you a percentage. Uplift depends on your neighbourhood, the size and finish of the unit, and what comparable properties with second units actually sold for, and any builder promising a fixed return is selling rather than advising. If income is the goal, we size and lay out the unit for the rental market on your street rather than for maximum square footage.
Related service: Garden Suites
Prefabricated and panelised garden suites are available in the GTA, and on the right lot they shorten the on-site build window considerably because the shell arrives largely complete. The catch is that the module is only part of the job. You still need the survey, the zoning review, the permit set stamped for your specific property, the foundation, the trenched water, sanitary and hydro connections, the crane access to lift the unit into a rear yard, and the inspections through to occupancy.
On a tight lot with no laneway and overhead wires, crane access is sometimes the constraint that rules a prefab out entirely. We assess both routes against your site and tell you honestly which one is cheaper and faster for your property - sometimes it is a factory unit, and often on constrained Toronto lots it is a site-built one.
Related service: Garden Suites
A garage conversion is usually the least expensive way to add a legal unit, because the foundation, walls and roof already exist - but the price swing between two conversions on the same street can be large. The cost drivers are the floor, the envelope and the services. Garage slabs are poured to drain and are rarely at house level, so a raised, insulated floor build-up is common. The walls, roof and slab were never insulated to residential standards, so you are adding insulation, air sealing and vapour control throughout.
Then come the windows and egress, heating and ventilation, plumbing runs for a bathroom and kitchen, and an electrical panel that can actually carry the new load. Detached garages add a trench for services. We price after a site inspection that opens up what is behind the finishes, so there is no discovery bill halfway through construction.
Related service: Garage Conversions
Yes - a garage conversion to living space is legal when it is done with a building permit and the finished space meets the Ontario Building Code and your municipality's zoning. Provincial policy now allows additional residential units on most single-family lots, and a garage - attached or detached - is a recognised candidate. What makes it legal is not the intention but the file: a permit, drawings that show compliant ceiling height, insulation, egress windows or doors, fire separation from the house and from any remaining parking area, smoke and carbon-monoxide alarms, ventilation, and inspections closed off at the end.
Two other things are commonly missed: the zoning may still require a parking space you are about to remove, and a detached garage triggers its own servicing and separation rules. Living in an unpermitted conversion risks orders to comply, insurance problems and a resale disclosure you do not want.
Related service: Garage Conversions
The cheapest legal garage conversion to living space is the one that keeps the existing structure and keeps the plumbing short. In practice that means: leave the slab where it is if levels and drainage allow, keep the roofline and structure untouched, place the new bathroom and kitchen on the wall nearest the existing house drain so you are not saw-cutting long trenches through concrete, and choose an in-wall heat pump or ductless head rather than extending the home's ductwork. Insulate properly the first time - it is the item people cut, and it is the one that makes the room unusable in January and expensive every month after.
What is never cheap in the long run is skipping the permit: unpermitted work resurfaces at resale, at refinancing, and at claim time. We will tell you at the site visit which of these savings your building actually allows.
Related service: Garage Conversions
Usually yes, and it is the change that makes a garage conversion to living space stop looking like a converted garage - but it is structural work, not trim work. The garage door opening is spanned by a header carrying roof or second-storey load, and the new wall below it has to be framed, insulated, air sealed and tied into the existing foundation, often with a new frost-depth footing or a curb under the sill. Getting the exterior finish, window proportions and sill height to match the house is what separates a conversion that adds value from one that reads as an infill.
Zoning matters too: some municipalities require the parking space to be replaced elsewhere on the lot before the door goes. All of this belongs on the permit drawings, and we detail it there rather than deciding it on site.
Related service: Garage Conversions
Five recur in garage conversion to living space projects, and we see them in that order. First, building without a permit and discovering it at resale. Second, treating the slab as a finished floor - a garage slab slopes to drain, sits below the house, and is uninsulated, so the floor is cold and the levels never work out. Third, under-insulating the roof and walls because the shell already looked closed in.
Fourth, ignoring egress and ceiling height until the inspector raises them, which is the point where a layout has to be redrawn. Fifth, loading a new kitchen, bathroom and heat pump onto an electrical panel with no capacity left. Each of these is cheap to solve on paper and expensive to solve after framing. That is why our process front-loads a site inspection and a stamped permit set before any demolition starts.
Related service: Garage Conversions
Ask three questions before you ask a garage conversions contractor for a price. First: who pulls the permit? If the answer is you, the homeowner, the risk of a failed inspection has quietly moved onto your side of the table. Second: does the quote include the drawings, the zoning review and the inspections to occupancy, or only the construction?
A cheap number that stops at framing is not cheaper. Third: what happens when the inspector asks for something the quote did not anticipate - is there a written change process, or a conversation? Then check the ordinary things: WSIB coverage, liability insurance, a written fixed-scope contract, and references from conversions in your municipality specifically, because by-law interpretation differs across the GTA. We handle design, permit and build under one contract across all 30 GTA municipalities, so there is one party accountable from feasibility to final sign-off.
Related service: Garage Conversions
Ontario lets a homeowner do a lot of work on their own house, so the legal answer is that parts of it are yours to do - the question is which parts a garage conversions contractor should still own. The practical answer is that a conversion touches the items where self-performing goes wrong: structural changes at the garage door opening, fire separation between the unit and the house, egress sizing, insulation and vapour control in an assembly that was never designed to be heated, and electrical and gas work that must be done by licensed trades regardless of who owns the house. You also still need a permit, stamped drawings for the structural work, and passed inspections - the inspector does not grade on effort.
Many owners keep the demolition and the finishing and hand us the permit package, the envelope and the mechanical. We are happy to scope it that way and put the split in writing.
Related service: Garage Conversions
Think of a garage conversions contractor's schedule as three clocks, and only one of them is construction. The first is design and documentation: measuring the existing building, confirming zoning, and producing a permit set. The second is the municipality's review, which varies across the GTA and lengthens if a variance or a Committee of Adjustment application is needed - that is the clock nobody controls, and any contractor who promises a permit date is promising something that is not theirs to give.
The third is the build itself, which for a conversion is short compared with new construction because the shell exists, but still runs through demolition, structure, services, envelope, drywall, finishes and inspections. We give you a schedule with the three clocks shown separately at contract, and we tell you which milestones move if the review takes longer than expected.
Related service: Garage Conversions
Yes, and any honest garage conversions contractor will say so first. Changing a garage from parking to living space is a change of use under the Ontario Building Code, and it requires a building permit in every GTA municipality - this is not one of the grey areas. Beyond the building permit, expect an electrical permit through the ESA, plumbing on the same permit or a separate one depending on the municipality, and a zoning review confirming the unit is allowed and that parking, setbacks and lot coverage still work.
If you are creating a second dwelling unit rather than an extra room, the file also covers fire separation, egress, ventilation, and alarms interconnected with the main house. The permit is what turns the finished space into legal floor area - it is what an appraiser, an insurer and a future buyer's lawyer will look for. We prepare and submit the full package as part of our contract.
Related service: Garage Conversions
Sometimes, and it is worth settling with your garage conversions contractor before you fall in love with a layout. Zoning by-laws across the GTA differ on how much parking a property must provide and whether a converted garage has to be replaced by a space elsewhere on the lot. Toronto has moved away from minimum parking requirements in much of the city, while several surrounding municipalities still require a space for the principal dwelling, an additional unit, or both.
Where a space is required, a driveway pad or a side-yard space often satisfies it, provided the surface, width and the way it meets the street comply. Where it cannot be satisfied, the route is a minor variance, which adds time and is not guaranteed. We check the parking rule for your specific municipality and lot during feasibility, before drawings begin, so this never becomes a mid-project surprise.
Related service: Garage Conversions
Two rulebooks apply at once, and a project has to satisfy both. Provincial planning rules now allow additional residential units on most urban single-family lots - commonly up to two extra units plus the main house - which is what makes an ADU possible in principle. Your municipality's zoning by-law then decides what is possible on your lot: setbacks, height, lot coverage, separation from the main dwelling, tree protection, parking and emergency access.
The Ontario Building Code governs the unit itself: it must be self-contained with its own kitchen, bathroom and entrance, meet minimum ceiling heights and room sizes, have compliant egress windows or doors, fire separation and interconnected smoke and carbon-monoxide alarms, plus ventilation and insulation to current standards. Servicing - water, sanitary and an electrical supply sized for the new load - completes the list. We test all of it against your survey during feasibility.
Related service: Accessory Dwelling Units
The expensive mistakes happen before construction, not during it. The most common is designing the unit first and checking the by-law second, which produces a plan that fails on setback, height or separation and has to be redrawn. Close behind is underestimating servicing: water, sanitary and hydro have to reach the unit, and on a lot with no laneway that trench can cross the whole yard, sometimes past a protected tree. Third is treating soft costs - survey, arborist report, engineering, permit fees, development charges where they apply - as an afterthought.
Fourth is hiring separate designers and builders and discovering at permit stage that nobody owns the gap between them. Fifth is starting work before the permit is issued in the hope of catching up. Our sequence exists to remove all five: feasibility, then design, then permit, then a fixed-scope build.
Related service: Accessory Dwelling Units
There is no single provincial minimum square footage for accessory dwelling unit construction. What actually constrains the small end is the Building Code: the unit must be self-contained, with a kitchen, a bathroom, a sleeping area, minimum room dimensions and ceiling heights, a compliant egress window or door, and enough space to run ventilation and services properly. Municipal zoning then sets the maximum - a share of lot area or a hard cap on floor area and height, depending on the by-law - and it is far more often the maximum, not the minimum, that shapes the design.
In practice the useful question is not how small a unit can legally be, but how small it can be and still rent well and live well: a cramped layout is the one thing you cannot renovate away later. We plan the unit around your lot's maximum envelope and the way the space will actually be used.
Related service: Accessory Dwelling Units
For a dwelling unit, the answer is zero: accessory dwelling unit construction always needs a permit. The small-structure exemption people are thinking of applies to detached accessory buildings under roughly ten square metres that contain no plumbing and are not used as living space - a garden shed, in other words. The moment a structure has a kitchen, a bathroom, heating or someone sleeping in it, it is a dwelling unit and requires a building permit regardless of size, plus zoning approval and inspections.
Even the exempt shed still has to respect zoning setbacks and lot coverage. Building an unpermitted suite is the single most costly shortcut in this business: it can attract an order to comply or remove, it voids the insurance position you thought you had, it cannot be counted as legal floor area at appraisal, and it surfaces at closing. We only build permitted work.
Related service: Accessory Dwelling Units
In accessory dwelling unit construction it is rarely the part people expect. Finishes are visible, so they get the attention, but the money concentrates in three places. Below ground: excavation, foundation and the trenched water, sanitary and electrical runs to a building that has never had services - on a constrained lot with poor access, this is routinely the largest single line. In the envelope: a small building has a lot of exterior surface per square foot of floor, so insulation, air sealing, windows and cladding cost proportionally more than they do on a house addition.
And in the soft costs: survey, drawings, engineering, permit fees and any variance application arrive before construction and are easy to leave out of a mental budget. Kitchens and bathrooms matter, but they are the part you control. We show the split line by line so you can see where a change actually moves the number.
Related service: Accessory Dwelling Units
Four items decide almost the whole garage conversion cost, and none of them are the finishes. The floor comes first: a garage slab slopes to drain and sits below house level, so most conversions need a raised, insulated floor build-up, and some need the slab cut for drainage. The envelope is second: walls, roof and slab were never insulated for occupancy, so you are adding insulation, air sealing and vapour control everywhere. Third is services - a bathroom and kitchen need supply and drainage, and the electrical panel usually needs capacity added before it can carry a second unit.
Fourth is whether the garage is attached or detached, because detached means a trench across the yard and a separate heating solution. Structural work at the garage door opening sits on top. We inspect before quoting and price these four items explicitly rather than burying them in a square-foot rate.
Related service: Garage Conversions
Garage conversion cost is usually the lower of the two, because the foundation, walls and roof already exist and those are the parts of a building you cannot value-engineer. An addition starts with excavation, footings, foundation and a new roof before a single square foot becomes usable. The comparison flips in a few situations: if the garage slab and footings will not carry a heated, occupied structure, if the ceiling height cannot reach code without raising the roof, or if you lose parking the zoning still requires and cannot replace it on the lot.
There is also a use question worth asking out loud - an addition adds space to your house, while a conversion can create a separate rentable unit, and those two outcomes are not interchangeable. We price both routes when your property genuinely supports each, so the choice is made on numbers rather than assumption.
Related service: Garage Conversions
It depends on what the garage is doing for you today and what the unit would do tomorrow. If the garage stores things you could store elsewhere, and your lot allows a legal second unit, a conversion is usually the lowest-cost path to rentable floor area on a property you already own - no land purchase, no new foundation, and a shorter build than new construction. It is worth less if you genuinely need covered parking in a GTA winter, if the zoning forces you to replace the parking space anyway, or if the structure needs so much remediation that an addition or a purpose-built garden suite delivers a better unit for a similar figure.
The permitted, closed-file version is also the only version an appraiser will count. We give you that assessment at feasibility, including when the answer is that your lot suits a different approach.
Related service: Garage Conversions
Yes - two kinds, and both are settled before a dollar of garage conversion cost is spent. Zoning permission confirms the use is allowed on your lot and that setbacks, lot coverage, and any parking requirement still work after the change. A building permit then approves the construction itself: structure at the door opening, insulation and vapour control, ceiling height, egress, fire separation, ventilation, plumbing and electrical. Converting to an extra room for your own household and converting to a separate dwelling unit are different files, with the second adding fire separation from the main house, interconnected alarms and its own entrance and services.
Some GTA municipalities also require a second-unit registration once the work is complete. None of this is optional, and none of it is expensive relative to the cost of unwinding unpermitted work later. We prepare the zoning review and the permit package as part of the contract, and we manage the inspections through to sign-off.
Related service: Garage Conversions
The lowest garage conversion cost comes from three habits: keep the structure, keep the plumbing short, and get the drawings right the first time. Concretely: do not move the roofline or the exterior walls, place the wet rooms on the wall closest to the existing drain so the slab is cut once and briefly, use a ductless heat pump instead of extending the house's ductwork, and design the layout around the ceiling height and egress you already have rather than fighting them. Spend where it does not show - insulation and air sealing - because that is what makes the space usable year-round and cheap to run.
Then keep the schedule tight: a conversion where the permit set is complete and the trades are sequenced costs less than the same job done in stops and starts. What never saves money is skipping the permit. We will tell you at the site visit which of these apply to your building.
Related service: Garage Conversions
Stock accessory dwelling unit plans are a useful way to settle what you want - layout, size, feel - but they are not a permit set. A permit application has to show your lot: the survey, the setbacks and separation distances your zoning by-law requires, the grading and drainage, the tree protection zone, the servicing route, the foundation designed for your soil, and structural details signed by a qualified designer or engineer for Ontario loads. A plan drawn for another province or another lot will not carry those.
The efficient path is to bring a stock plan you like as a starting point and let us adapt it into a compliant, stamped set for your property - that usually costs less than a full custom design and gets to permit faster than trying to force an off-the-shelf drawing through review. We keep the layout you liked and make the parts that must be site-specific correct.
Related service: ADU Plans
Your municipal zoning by-law sets the setbacks, and they vary across the GTA - there is no single number that holds from Toronto to Oshawa. What is consistent is which dimensions get measured: the rear and side yard setbacks, the separation distance between the ADU and the main house, height and angular-plane limits that step the building down near a neighbour, total lot coverage, and the soft-landscaping you must retain. The Building Code adds its own limits on windows and openings near a property line for fire-spread reasons, which can quietly redesign an elevation.
On many lots one of these - usually separation distance or the angular plane - is the binding constraint, not the setback people worry about. We measure all of them against your survey during feasibility and tell you the real buildable envelope before any design time is spent.
Related service: Accessory Dwelling Units
The City publishes guidance material, design guidelines and illustrated examples for laneway and garden suites, and those documents are genuinely worth reading before you meet a builder - they show what the by-law is trying to achieve and where applications commonly fail. What they are not is a permit set for your property. A submission still needs a current survey, site-specific siting and grading, structural design for your soil and loads, servicing, and drawings prepared by a qualified designer.
Treat the City material as the brief, not the drawing. Programs and incentives around second units also change from year to year and differ between GTA municipalities, so anything you read about grants or fee relief should be confirmed against the current municipal page before you count on it. We check what is actually available for your municipality as part of feasibility.
Related service: ADU Plans
Accessory dwelling unit plans that get through review and through construction have six parts. A site plan on a current survey showing setbacks, separation, grading, drainage, the servicing route and tree protection. Floor plans with room dimensions, ceiling heights and egress.
Elevations and sections showing height, angular planes and the wall, roof and floor assemblies with their insulation values. Structural drawings for foundation, framing and any spans, stamped where required. Mechanical, plumbing and electrical layouts, including where the water, sanitary and hydro connect and how the unit is heated and ventilated.
And the compliance sheet - fire separation, alarms, energy-efficiency path - that the plans examiner reads first. Missing any one of these is the usual reason a file comes back with comments and loses weeks. Our permit sets carry all six, and we answer the examiner's comments ourselves rather than passing them to you.
Related service: Accessory Dwelling Units
Accessory dwelling unit plans clear approval in two stages, and only the first is under anyone's control. Producing the drawings takes as long as the site needs - a survey, a zoning review, design revisions with you, and the structural and servicing work. Municipal review is the second stage, and timelines differ from one GTA municipality to the next and lengthen when a file comes back with comments or needs a minor variance at the Committee of Adjustment, which runs on its own hearing calendar.
Anyone quoting you a guaranteed permit date is quoting something they do not control. What genuinely shortens the clock is a complete, compliant first submission - most delay is re-review, not review. We build the set to be right on the first pass, and we tell you at contract which parts of your schedule depend on the municipality rather than on us.
Related service: ADU Plans
Yes, as a category. Provincial rules allow additional residential units on most urban single-family lots, and municipalities across the GTA have written garden suite or additional-dwelling-unit provisions into their zoning by-laws. Legal as a category, though, is not the same as permitted on your lot.
Each municipality sets its own tests - minimum lot size or width, separation distance from the main house, rear and side setbacks, height and angular planes, lot coverage, soft landscaping, tree protection, and an unobstructed emergency-access path from the street where there is no laneway. Toronto, Mississauga, Markham and Oshawa do not read identically, which is why a general answer is of limited use. The reliable answer comes from testing your survey against your municipality's by-law, and that is exactly what our feasibility review does before you commit to design.
Related service: Garden Suites
Your buildable envelope is the answer, and it is what garden suite plans must sit inside; it comes from four limits working together rather than one number. Zoning caps floor area - often as a share of the rear yard or the lot - and caps height, usually with an angular plane that steps the building down as it approaches a neighbouring property. Setbacks and the required separation from the main house shrink the footprint from every side. Lot coverage and minimum soft-landscaping requirements take another share.
Finally, the emergency-access path and any tree protection zone can rule out the very part of the yard you had in mind. On a typical GTA lot, one of these binds well before the others, and it is frequently the angular plane rather than the floor-area cap. We calculate the envelope from your survey first, then design inside it - never the reverse.
Related service: Garden Suites
Every GTA municipality requires a separation distance between the main dwelling and a garden suite, and the exact figure is set by the local by-law rather than by the province. The reason behind it is consistent even where the number is not: separation controls fire spread between two buildings, protects light and privacy for both the suite and the neighbours, and keeps a clear route for firefighters on a lot with no laneway access. The Building Code layers on its own limiting-distance rules, which govern how much unprotected window and door area you can have on a wall facing another building or a property line - that is often what quietly reshapes an elevation once design starts. Because separation eats directly into a rear yard, it is one of the first dimensions we measure on your survey, before anything is drawn.
Related service: Garden Suites
Often yes, but the trees are a design input for your garden suite plans, not an afterthought. Most GTA municipalities protect trees above a certain trunk diameter - on the property and sometimes on the neighbour's or the City's side of the line - and require an arborist report, a tree protection zone fenced during construction, and a permit with replanting conditions if a tree must be injured or removed. The protected root zone constrains where you can excavate, where the crane or excavator can stand, and where the servicing trench can run, which is usually the real problem: the trench, not the building.
Sometimes the fix is a different suite footprint, sometimes a different trench route, occasionally a smaller unit. What does not work is designing first and discovering the tree at permit stage. We commission the arborist report during feasibility.
Related service: Garden Suites
A small detached accessory building - roughly ten square metres or less, with no plumbing, not used as living space - generally does not need a building permit, and even then it must still respect zoning setbacks, height and lot coverage. A garden suite is a different animal entirely. It is a dwelling unit, so it requires a building permit regardless of how small it is, along with zoning approval, servicing, and inspections through to occupancy.
People sometimes ask this question hoping a suite can be built as a shed with a bed in it; it cannot, and the consequences are real - an order to comply or remove, an insurance position that will not hold, floor area an appraiser cannot count, and a problem that surfaces at closing. We only build permitted work, and we will tell you honestly if a permit path does not exist on your lot.
Related service: Garden Suites
A good laneway design solves the by-law and the daylight problem at the same time. The by-law gives you a narrow envelope: height limits, angular planes stepping down toward the neighbouring rear yard, separation from the main house, and limits on openings near property lines. Inside that envelope, the design decisions that matter most are where the stair goes, how the main living space gets a real window rather than a slot, whether the kitchen and bathroom stack to keep plumbing short, and how the entrance reads from the laneway so the unit feels like a home rather than a garage.
Storage and a place for coats and boots decide how liveable a small unit is in a Toronto winter. We design inside the measured envelope from day one, so what you approve is what the permit examiner sees.
Related service: Laneway Homes
Most laneway home designs come down to this choice. Two storeys buys floor area without eating more of the yard, which is usually why owners want it, but the angular plane and height limits decide whether your lot can carry it. A second storey also brings a stair, and a stair in a small footprint consumes a surprising share of both floors - sometimes enough that a well-planned single storey lives better than a cramped two.
The other trade-offs are cost and use: two storeys mean more envelope, more structure and often a different foundation, while a single storey is simpler to build and more attractive to tenants who want no stairs, including aging parents, which is one of the two reasons GTA homeowners build these units at all. We test both against your envelope and your intended occupant rather than defaulting to the larger option.
Related service: Laneway Homes
Sometimes, and it is worth checking early because it changes the whole design. Where the by-law permits it, a parking space or small garage at the laneway can be integrated, but it consumes ground-floor area that would otherwise be living space, adds a structural opening and a slab detail, and can push the unit's usable rooms upstairs. Toronto has moved away from parking minimums in much of the city, so parking is more often a choice than a requirement - which means the honest question is whether you would rather have a parking space or a larger, better-laid-out unit.
If the property already relies on laneway parking for the main house, that has to be preserved and shown on the drawings. We resolve this at feasibility, because retrofitting parking into a laneway design late is expensive.
Related service: Laneway Homes
Good laneway home designs make space with decisions, not square footage. Ceiling height is the cheapest volume you will ever buy - within the height limit, a raised ceiling in the main living area transforms how the unit reads. Windows placed for a long sightline across the plan beat more windows scattered around the walls, and a single well-placed high window can light a room the angular plane would otherwise leave dark.
Circulation is the enemy: every corridor is floor area you cannot furnish, so a plan with one compact stair and rooms opening off a single space wins. Built-in storage, a proper entry for coats and boots, and a bathroom door that does not swing into the only walkway matter more than any finish choice. We plan the furniture layout before we finalise the walls.
Related service: Laneway Homes
The lot has to abut a public laneway - that is the threshold test, and without it your project is a garden suite under a different set of provisions. From there the by-law governs height and the angular planes that step the building down toward neighbouring rear yards, setbacks from the laneway and side lot lines, separation from the main house, lot coverage and soft landscaping, tree protection, and access for emergency services. The Building Code then governs the unit itself: egress, ceiling heights, fire separation and limiting distance for openings, insulation, ventilation, and interconnected alarms.
Servicing - water, sanitary and hydro from the main house or the street - has to be shown and is often the item that decides the budget. Every one of these is testable against your survey before design begins, and that is where we start.
Related service: Laneway Homes
Judge the process before the price. Ask whether feasibility comes before design - a builder who quotes a unit before reading your survey and your municipality's by-law is quoting a guess. Ask who is accountable for the permit, and what happens if the examiner comes back with comments. Ask whether the contract covers design, permit, servicing and inspections through to occupancy, or stops at construction, because the gaps are where budgets break.
Then check the basics: WSIB clearance, liability insurance, a written fixed-scope contract, and completed ADUs in your municipality specifically - by-law interpretation differs across the GTA, and experience in Toronto does not automatically transfer to Whitby. Finally, notice how a builder handles the word no. The right one will tell you when your lot does not support the unit you want. We work that way across all 30 GTA municipalities.
Related service: Accessory Dwelling Units
As ADU builders we work across the Greater Toronto Area - the City of Toronto and its former municipalities, Peel, York, Durham and Halton, from Burlington and Milton in the west through Toronto, Vaughan and Markham to Pickering, Whitby, Oshawa and Clarington in the east, and up through Newmarket, Aurora, Georgina and the northern townships. That coverage matters more than it sounds, because the by-law that governs your project is written by your municipality, not the province. Setbacks, separation distances, parking requirements, second-unit registration and even how a file is submitted differ from one of these municipalities to the next.
Knowing which desk your application lands on, and what that desk asks for, is a large part of getting a permit issued without a second round of comments. Tell us your address and we will tell you which rules apply to your lot.
Related service: Accessory Dwelling Units
You can, and on a large custom project there are good reasons to. On an ADU it usually costs more and takes longer. The reason is that an ADU is dominated by constraints - envelope, servicing, separation, access - rather than by architecture, and those constraints are where design and construction meet.
When the two are separate, a beautiful drawing can arrive that is expensive to build on your specific lot, and when the permit examiner or the site raises an issue, there is a gap between two contracts and nobody clearly owns it. Under one contract, the person who has to build it is in the room when it is drawn, the feasibility findings flow straight into the drawings, and there is a single party answering for the permit and the schedule. That is how we run every project: feasibility, design, permit and build together.
Related service: Laneway House Design
A quote from ADU builders that you can actually compare shows the whole path, not just the building. Look for: the feasibility and zoning review; the survey and any arborist report; the full permit set including structural, mechanical and servicing drawings; permit fees and any development charges that apply in your municipality; site works - excavation, foundation, grading, and the trenched water, sanitary and hydro runs; the building itself broken into envelope, mechanical, electrical and finishes; and the inspections through to occupancy. Then look for what is excluded and how changes are priced, because that is where two quotes that look similar diverge.
A single square-foot rate with no breakdown is not a quote, it is a hope. We issue a fixed-scope price after feasibility, itemised the way it is listed here, so you can see exactly what moves if you change something.
Related service: Accessory Dwelling Units
That is the first thing serious ADU builders do, and it is deliberately the smallest commitment in the project. A feasibility review takes your address and your survey and tests them against your municipality's by-law: is an additional unit permitted on this lot, what is the buildable envelope after setbacks, separation, height and angular planes, is there an emergency-access route, where do water, sanitary and hydro come from, and are there protected trees in the way. The output is a plain answer - yes with an envelope, yes with a variance and what that involves, or no with the reason. Roughly a share of the lots we review need a Committee of Adjustment application or a different approach than the owner first had in mind, and finding that out at the start costs a fraction of finding it out at permit stage.
Related service: ADU Building Permit
Support for second units in Ontario has come from three directions: federal programs aimed at secondary and garden suites, provincial or regional housing initiatives, and municipal incentives that a handful of GTA and Ontario municipalities have run - sometimes as forgivable loans tied to keeping the unit affordable for a set term. What matters more than the list is that these programs open, change and close, and eligibility usually hinges on details like whether the unit is self-contained, whether you occupy the property, and whether you apply before construction starts. That last one catches people: several programs will not fund work already underway.
We will not tell you a grant exists to win your business. During feasibility we check the current federal, provincial and municipal programs for your specific municipality and tell you plainly what you are eligible for today.
Related service: Garden Suites
Not as a general renovation grant. Ontario support tends to be targeted: programs for accessibility modifications, energy-efficiency retrofits delivered through utilities or federal partners, and housing-focused funding usually administered by your region or municipality rather than paid directly to a homeowner. Second-unit incentives, where they exist, generally come from a municipal or federal housing program rather than from a provincial renovation fund. Two practical notes.
First, energy-efficiency incentives can apply to the heating and envelope work inside an ADU project even when no ADU-specific program is open, so it is worth checking that route separately. Second, every one of these programs has conditions on timing, contractor qualifications and documentation, and applying after the fact rarely works. We flag which programs are worth an application for your project during feasibility, before you commit to a schedule.
Related service: Accessory Dwelling Units
Almost every ADU grant Ontario homeowners can actually use is municipal, not provincial: some municipalities have run programs that help homeowners create a legal second unit, typically as a forgivable loan or fee relief in exchange for renting the unit at or below a set rent for a defined period. Common conditions look like this: the unit must be new and legal, the property must meet the program's ownership and occupancy rules, you generally must apply and be approved before construction begins, the work must be permitted and inspected, and you sign an agreement registered on title committing to the affordability term. Programs are capped, oversubscribed, and open in intake windows rather than continuously. Because availability and terms differ across the GTA and change year to year, the only reliable answer is the current one for your municipality - we check it during feasibility and tell you whether an application is realistic for your timeline.
Related service: Accessory Dwelling Units
Adding permanent, permitted living space - with or without an ADU grant - normally changes your property's assessed value, and property tax in Ontario follows assessment - so yes, expect an adjustment after the unit is complete and assessed. That is not a reason to avoid the permit; unpermitted space carries far worse consequences than an assessment increase, including insurance and resale problems, and assessment can catch up with unpermitted work anyway. Two things are worth understanding.
The increase applies to the added value, not to a re-rating of your whole property from scratch. And where the unit is rented, the income side normally dwarfs the tax adjustment - the point of the unit, after all, is that it earns. We do not give tax advice and we will not quote you a figure; your assessment is set by MPAC and your municipality's rate, and your accountant should see the rental numbers.
Related service: Accessory Dwelling Units
Almost always, yes - and an ADU grant claimed late is the single most common way homeowners lose money they were entitled to. Housing and incentive programs are designed to influence a decision, so they typically require approval before you break ground and will not reimburse work already underway. Applications also take time: they usually want proof of ownership, a permit or permit application, drawings, a contractor quote, and sometimes a commitment about how the unit will be rented.
That means the funding application has to be sequenced alongside design and permit, not bolted on afterwards. Practically, this is a reason to start feasibility earlier than you think you need to. We check current programs during feasibility and, where one is worth pursuing, we schedule the application ahead of the construction start rather than letting the deadline pass unnoticed.
Related service: ADU Building Permit
A prefab garden suite is built in a factory - either as complete modules or as panelised walls, floors and roof - then trucked to your property and craned into place on a foundation prepared in advance. A site-built suite is framed and finished in your rear yard from the ground up. The finished units can be equally good; what differs is where the work happens and what the risks are.
Factory work is weather-independent and fast once it starts, but it depends on the module fitting the buildable envelope, on a truck reaching your street, and on a crane having room to swing. Site-built is slower and more weather-exposed, but it can be shaped to an awkward lot inch by inch. On a constrained Toronto lot, access frequently decides this for you rather than preference.
Related service: Garden Suites
Sometimes prefab garden suites are cheaper, and less often than the marketing suggests - because the module is only one line of the budget. Whichever route you take, you still pay for the survey, the zoning review, the stamped permit set, the excavation and foundation, the trenched water, sanitary and hydro connections, the grading and landscaping, and the inspections through to occupancy. Prefab adds transport and crane costs and can add a premium for changes, since the factory's efficiency comes from repetition.
Where prefab genuinely wins is a straightforward lot with good access and a standard plan, where a shorter on-site window means less disruption and fewer weather delays. Where it loses is a tight lot needing a shape the catalogue does not offer. We price both when your property supports both, and the comparison is done on the total, not on the module.
Related service: Garden Suites
Yes - prefab garden suites are inspected every bit as much as a site-built unit. The factory may hold a certification for how the modules are manufactured, which can simplify part of the review, but your municipality still issues the building permit for your property, and the permit still needs a site plan on a current survey, setbacks and separation, grading and drainage, tree protection, foundation design for your soil, and the servicing route. Inspections still happen: foundation, connections, and the on-site completion work after the module lands, through to occupancy.
Anyone implying that a factory unit bypasses the municipal process is describing a shed, not a dwelling. Practically, that means the permit timeline is broadly the same whichever construction method you pick - the time saving from prefab lands in the build window, not in the approvals.
Related service: Garden Suites
This is the question that decides most prefab garden suites in Toronto, and it is worth answering before you fall for a catalogue. The crane needs a place to set up - usually the street or the driveway - within reach of the rear yard, with enough clear radius to swing the module. What gets in the way: overhead hydro and telecom wires, mature street trees, narrow or one-way streets, parked cars, neighbouring houses close on both sides, and street-occupancy permits that some municipalities require for a lift.
Weight and reach work against each other, so a larger module needs a bigger crane and more room, not less. We do a lift assessment as part of feasibility for any prefab option, because discovering an access problem after a module is ordered is the most expensive way to learn it.
Related service: Garden Suites
The visible part of prefab garden suites is fast, and that is what people remember: once the foundation is ready and the crane is booked, the module lands in a day. What surrounds it is not fast. Before the lift you need the survey, the zoning review, the permit - the municipality's clock, which is unchanged by the construction method - the factory's production queue, and the site work: excavation, foundation, servicing trenches, grading. After the lift come the connections, the interior completion, the exterior finishing where modules join, landscaping, and the inspections through to occupancy.
Add the risk that a delayed factory slot or an unavailable crane date shifts the whole sequence. So the honest framing is that prefab shortens the on-site construction window meaningfully, while the total project timeline improves less than the day-of-placement photograph suggests. We schedule all three phases separately at contract.
Related service: Garden Suites
We do not publish an ADU construction cost, and you should be sceptical of anyone who does, because the same unit on two GTA lots is not the same job. What we can tell you is what moves the number. Size and storeys set the baseline.
Access decides how much the site work costs - a rear yard reachable only through a narrow side passage changes excavation, material handling and equipment entirely. Servicing distance matters: trenching water, sanitary and hydro across a yard, sometimes around a protected tree, is real money. Soil and grading drive the foundation.
Then the soft costs - survey, arborist, engineering, permit fees, any variance - land before construction starts. Finishes are the part you control and the part quoted last. We do a paid feasibility, then issue a fixed-scope price so you approve a number, not a range.
Related service: ADU Construction
Usually because two quotes are not covering the same ADU construction cost scope. One quote includes feasibility, survey, permit drawings, permit fees, excavation, foundation, servicing trenches, landscaping repair and inspections to occupancy. Another quotes the building and lists everything else as by others - and by others means by you, at a price nobody has established yet. The second common cause is allowances: a low number can hide a nominal figure for site work or finishes that will be trued up later, which is how a project that started cheap ends dear.
A third is risk. A builder who has read your by-law and your survey prices the actual constraints, while one who has not prices an average lot and issues change orders when reality arrives. Compare exclusions and the change-order clause before comparing totals - that is where the difference actually lives.
Related service: ADU Construction
Below-grade and servicing work carries most of the ADU construction cost on GTA lots. Excavation, foundation, and the trenched water, sanitary and hydro runs to a building that has never had services are invisible in the finished project and frequently the largest single line in the budget - especially on a lot with restricted access, where every cubic metre of soil leaves through a side yard. The envelope is the second concentration: a small building has a lot of exterior surface relative to its floor area, so insulation, air sealing, windows and cladding cost proportionally more than they would on a larger addition.
Soft costs are the third, and the easiest to forget because they arrive before anything is visible. Kitchens, bathrooms and finishes get the attention, but they are the part you can dial up or down. We show the split so you can see where a decision actually moves money.
Related service: ADU Construction
Cut ADU construction cost on geometry and sequence, not on the envelope. A simple rectangular footprint with a straightforward roof costs less per usable square foot than a shape with jogs and dormers, and nobody rents a jog. Stack or adjoin the kitchen and bathroom so plumbing runs stay short. Site the unit to shorten the servicing trench and to stay clear of protected root zones.
Choose one storey where the by-law makes a second expensive, and put the saving into ceiling height. Then protect the schedule: a complete permit set and properly sequenced trades cost less than the same job stopping and restarting. What we will not recommend cutting is insulation, air sealing, windows or the permit - those are the items that determine whether the unit is comfortable, cheap to heat, legal and countable at appraisal.
Related service: ADU Construction
Building on land you already own removes the largest cost in GTA real estate - the land - along with land transfer tax, most of the legal and financing costs of an acquisition, and the carrying cost of a second mortgage on a full property. That is why a second unit on an existing lot is usually the lower-cost route to rental floor area for a homeowner who is not trying to change neighbourhoods. The trade-offs are real, though: an ADU is a construction project with a permit timeline and a build period, the rent comes from a unit in your own back yard with the management realities that implies, and it is one asset in one location rather than a diversified second address. We can size and lay out the unit for the rental market on your street; the investment comparison itself is a conversation for you and your accountant.
Related service: ADU Construction
We design, permit and build every common form of accessory dwelling unit on GTA lots: laneway homes, garden suites, detached ADUs, basement and secondary suites, in-law and guest suites, garage conversions, modular and prefab units, and rental or student-suite conversions. Each one is delivered as a complete package rather than a drawing set - feasibility against your survey, zoning review, permit drawings, construction, and final occupancy sign-off under a single contract. Which of them your property can actually take is decided by the lot, not by preference: laneway access, rear-yard depth, servicing runs, tree protection and the municipality's own by-law all narrow the list before design starts.
Related service: Laneway Homes
Access decides it first. A lot that backs or flanks onto a public laneway is a laneway-house lot, because the laneway carries servicing and emergency access. A lot with no laneway is garden-suite or detached-ADU territory, and the by-law then leans harder on separation from the main house, a clear path from the street for firefighters, and how services cross the yard.
Where the yard is too tight for either, the unit usually moves inside the existing building envelope - a basement or secondary suite, or a garage conversion. We settle this with a feasibility review against your real survey before any design work begins, because a plan can fail on a single dimension and force a redesign.
Related service: Accessory Dwelling Units
We work across the Greater Toronto Area, and every municipality we serve has its own page setting out that city's ADU by-law position, permit-fee range, frost depth, snow load and build season - because those are the numbers that change what gets built and when. Approvals are municipal, so the same unit is reviewed differently in Toronto than in Mississauga, Brampton, Markham or Oshawa, and the schedule follows the local review queue. If your address is in the GTA, start with your city's page and then the service you have in mind; the pairing of the two is where the real constraints show up.
Related service: Accessory Dwelling Units
Both, and deliberately under one contract. Splitting design from construction is where ADU projects lose months: the designer hands over drawings, the builder prices something different, and the zoning examiner's comments land on nobody's desk. We carry the file end to end - feasibility, zoning review, permit drawings and engineering, the application and its revisions, construction, inspections, and the final occupancy sign-off.
Municipal approval fees are budgeted and quoted separately from construction so you can see what is a fee and what is our work. One file, one point of contact, and no gap where an examiner's comment can sit unanswered for a month.
Related service: ADU Building Permit
The articles here cover the parts of an ADU project that decide the outcome before construction starts: what each municipality's by-law actually permits, how zoning review and the permit queue work, what drives cost rather than what a unit 'costs', how the GTA build season and frost depth shape the schedule, and the differences between laneway houses, garden suites, basement suites and garage conversions. They are written against Ontario Building Code requirements and the by-laws of the GTA municipalities we build in, not general North-American advice. Each guide is written to be read before you spend money, so it names the decision it is meant to inform and the stage of the project at which that decision becomes expensive to reverse.
Related service: Garden Suites
Where it matters, yes. ADU rules in Ontario are set municipally on top of provincial permissions, so figures like permit-fee ranges, frost depth, snow load and the length of the review queue differ from one GTA city to the next. Articles that depend on those numbers say which municipality they apply to, and each city page carries that city's own values.
When an article gives a general rule - how servicing is trenched, how a firefighter access path is judged - it applies GTA-wide, but the dimension that decides your project is still read off your own survey. If a figure in an article and a figure in your municipality's current by-law disagree, the by-law governs and we will say so.
Related service: Accessory Dwelling Units
They are revised when the underlying rules move. Ontario's additional-residential-unit permissions and the GTA by-laws built on them have changed repeatedly in recent years, and a guide that describes a superseded rule is worse than no guide. Each article carries its publication date; treat that date as the limit of what it can promise, and confirm any dimension that your project turns on against the current by-law or with us before you commit drawings to it. Where a rule has changed since publication, we note the change on the article rather than quietly rewriting the text, so you can see what moved and when it moved.
Related service: Our ADU services
Yes, and for anything dimensional that is the only reliable route. A guide can tell you which by-law tests exist; only your survey tells you whether your lot passes them - rear-yard depth, separation from the main dwelling, angular planes, tree protection and the access path from the street. We run a feasibility and site review against your actual survey and return a written answer on what your lot can take, before any design fee is committed. That review is a paid stage, it is short, and it is the cheapest money you will spend on the project, because it is the point at which an unbuildable lot stops costing you anything further.
Related service: Our ADU services
We work across thirty municipalities in the Greater Toronto Area, covering the City of Toronto and the four surrounding regions - Peel, York, Durham and Halton. That includes the large centres such as Mississauga, Brampton, Vaughan, Markham and Oshawa, and the smaller and rural municipalities in the same regions, from Caledon and King to Scugog, Uxbridge and Georgina. Each municipality has its own ADU by-law, its own permit fee schedule and its own review timeline, so we keep a separate page for every one of them rather than treating the GTA as a single jurisdiction. If your property sits inside those thirty, the zoning review, permit drawings and construction are all handled by the same team.
Related service: Accessory Dwelling Units
Yes, and the differences are the single most common reason a project stalls. Ontario's provincial framework sets the floor - as-of-right permission for additional residential units - but each municipality writes the zoning by-law that governs setbacks, maximum height, lot coverage, separation from the main house, parking relief, tree protection and angular planes. Two lots of identical size on opposite sides of a regional boundary can support very different units.
Permit fees and review timelines vary as well. This is why our city pages carry that municipality's own by-law position, fee range and lot typology rather than a single GTA-wide summary.
Related service: Accessory Dwelling Units
Distance itself is not billed as a line item. What does move the price on outlying lots is the practical reality of the site: longer servicing runs to reach municipal water and sewer, septic or well considerations in rural areas, conservation-authority review where a property sits near a watercourse, and material delivery to a site without paved rear access. Those are scoped and priced during the feasibility stage, before you approve anything, so the figure you sign is the figure you build to. A large suburban lot in Durham or Halton frequently costs less per square foot to build than a constrained downtown Toronto lot, despite the drive.
Related service: Our ADU services
Our thirty city pages cover the municipalities we work in regularly and can speak to with by-law specifics. If your property sits just outside that set but still within reach of the Greater Toronto Area, send us the address and we will tell you plainly whether we can take it on, rather than guessing at rules we have not read. Where we cannot, we will say so.
We would rather decline a project outside our working area than run a permit application through a by-law we do not know well, because that is where homeowners lose months. Send the address and a copy of your survey if you have one, and you will get a straight yes or no within a couple of business days.
Related service: ADU Building Permit
Four groups account for most of the ADUs built on GTA lots. Homeowners housing family - an in-law suite for ageing parents, or a guest and adult-child suite that keeps the household under one property but not one roof. Owners ageing in place, who want a single-storey accessible unit and to rent or hand over the main house.
Investors and owner-occupiers adding a long-term rental or student suite for income. And homeowners who need workspace rather than living space, in the form of a backyard office. The physical unit differs less than people expect; what changes is the layout, accessibility provisions, servicing and how the unit is metered and separated.
Related service: Accessory Dwelling Units
Substantially, and it should be settled before drawings start. An aging-in-place suite drives zero-threshold entries, wider door openings, a curbless shower and blocking in the walls for future grab bars - all cheap at framing and expensive to retrofit. A rental suite drives separate metering, sound separation, an independent entrance and a layout that satisfies the fire-separation requirements for a distinct dwelling unit.
A backyard office drives daylight, data and heating and cooling for intermittent use, but not a full kitchen. Building the wrong one is not a decorating problem; it is a permit and a rebuild. Tell us the intended use at the first meeting, even if it may change, so the layout is designed to accommodate the switch.
Related service: Accessory Dwelling Units
Yes, and it is worth designing for. A great many GTA units start as an in-law suite, become a rental once the family situation changes, and eventually house the owners themselves after a downsize. The features that make that possible are decided early and cost little at the outset: an accessible entry and bathroom, separate metering roughed in whether or not it is used on day one, an independent entrance, and a kitchen location that does not have to move. We ask what the unit is for now and what it is likely to be in ten years, and design to the wider of the two.
Related service: Accessory Dwelling Units
Yes. Some owners have a builder already, or intend to act as their own general contractor, and need the feasibility study, zoning review, permit drawings and approvals handled properly. We take that as a defined engagement with its own scope and price.
What we do not do is issue a drawing set and walk away from the review process - the drawings are carried through municipal comments and revisions until the permit is issued, because a set that never clears review is worth nothing to you. We hand over a stamped, permit-issued set, the review correspondence and the conditions attached to the approval, so whoever builds it inherits a complete and current file.
Related service: ADU Building Permit
Each guide answers one question a GTA homeowner asks before committing to an ADU: what a given unit type actually costs, which lots qualify under the applicable by-law, what the permit process and timeline look like, what grants or financing exist in Ontario, and what a usable drawing set contains. They are written against the by-laws and approval steps that apply in the Greater Toronto Area, not general North American advice, because the servicing rules, tree protection requirements and rear-yard geometry here are what decide whether a project is feasible. Read them in the order the project runs - feasibility first, then unit type, then cost, then permit - and you will avoid the common mistake of choosing a design before confirming the lot supports it.
Related service: Accessory Dwelling Units
No, and no honest guide would claim otherwise. These pages will tell you what drives cost, what the by-law generally permits and where projects usually get held up, which is enough to decide whether to proceed and what to budget for. They cannot tell you what your specific lot supports.
Setbacks, servicing depth, soil, grading, mature trees, rear access and the angular plane from neighbouring properties are all measured on site against your survey. That assessment is the first paid stage of any project we take on, and it exists precisely because the answer changes lot by lot. Book the assessment early, because it determines the entire budget and every drawing that follows it.
Related service: Our ADU services
They reflect the Ontario framework and the municipal by-law positions in force at the time each guide was written, and each page carries its own last-updated date. ADU regulation in Ontario has moved quickly - provincial permissions for additional residential units, and the municipal by-law amendments that followed, have all changed within recent years, and individual municipalities continue to revise setbacks, height limits and fee schedules. Treat the guides as an accurate starting point and confirm the current by-law text for your municipality before you commit money, which is something we do as part of the zoning review. We re-check the by-law for your municipality at the start of every project, so nothing in a guide is ever the basis for a permit application.
Related service: ADU Building Permit
Start with the guide for the unit type your lot most plausibly supports, rather than the one you like best. If you have rear laneway access, read the laneway home material. If you have a deep rear yard without laneway access, start with garden suites.
If your ambitions are modest or your yard is tight, the basement or secondary suite and garage conversion guides are the realistic ones. After that, read the cost guide for that unit type and the permit guide for your municipality - those three together are enough to decide whether to book a feasibility review. If none of the three obviously applies to your property, send us the address and we will point you to the right starting guide.
Related service: Garden Suites
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