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Real Estate Investors in Scarborough, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $275,000-$368,500 (about $393/sq ft), with $8,000-$14,000 under the City of Toronto fee schedule in municipal approvals and a April-November construction season.

Investors adding a income-generating unit to an existing rental property. We start with a feasibility and lot review that states what the zoning allows, what the build costs and what the unit rents for before you commit capital.
Service area
Scarborough, Ontario
City of Toronto
Typical build estimate
$275,000-$368,500
about $393/sq ft in Scarborough
Municipal approvals
$8,000-$14,000 under the City of Toronto fee schedule
quoted separately from the build
Build season
April-November
118 cm snow · -3.9°C winter avg
Frost depth
1.2 m
footing depth, OBC Part 9
Local market
629,941
residents · walkability 52/100
Scarborough's slope toward the Bluffs is a design asset: on Guildwood and Cliffside lots the natural grade drop lets us build a legal walk-out basement suite at the front and still place a garden suite at the rear, producing two rentable units from one permit cycle. City of Toronto garden suite rules apply; Scarborough's wide lots also make basement secondary suites with separate walk-out entrances viable alongside a detached unit. Wide suburban lots with grade changes toward the Bluffs, frequently allowing a walk-out basement suite as well as a rear garden suite.
Lake-moderated winters in Scarborough - 118 cm of snow, -3.9°C average - give one of the longest build seasons in the region (April-November), which shortens the permit-to-occupancy timeline on real estate investors.
An investment ADU is underwritten before it is designed: the build cost, the $8,000-$14,000 under the City of Toronto fee schedule in approvals and the achievable Scarborough rent decide the unit size, not the other way round. We price the feasibility stage as a standalone deliverable so the numbers can be tested against your Scarborough parcel before any commitment to design. A legal second unit changes the appraisal basis of the property, which is the return most owners underestimate next to the monthly rent.
Everything you need to know about our services.
A typical 700 sq ft build in Scarborough estimates at $275,000-$368,500 - about $393/sq ft, set by $8,000-$14,000 under the City of Toronto fee schedule in approvals, a 1.2 m frost-depth footing requirement and 118 cm of annual snow load. Final pricing follows the site visit.
Related service: Our ADU services
City of Toronto garden suite rules apply; Scarborough's wide lots also make basement secondary suites with separate walk-out entrances viable alongside a detached unit. Approval costs in Scarborough run $8,000-$14,000 under the City of Toronto fee schedule, quoted separately from construction so the permit stage holds no surprises.
Related service: Secondary Suites
Wide suburban lots with grade changes toward the Bluffs, frequently allowing a walk-out basement suite as well as a rear garden suite. At 52/100 walkability, Scarborough suites usually keep one parking space: enough to clear the zoning review without surrendering the whole yard. We work regularly in Agincourt, Guildwood, West Hill.
Related service: Garden Suites
A legal, permitted second unit changes how the property is appraised in Scarborough - it is valued partly on income rather than purely on comparables. An unpermitted suite does the opposite: it is discounted or excluded entirely, and it surfaces on every purchaser's title and insurance review.
Related service: Accessory Dwelling Units
Get a free, no-obligation quote from GTA ADU Builders - zoning review, permit drawings and construction for ADUs across the GTA.