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Garage Conversions in Scarborough, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $115,500-$170,500 (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.

Owners of an underused attached or detached garage converting the existing footprint into living space. Converting avoids new foundations and often clears zoning faster than a new detached build.
Service area
Scarborough, Ontario
City of Toronto
Typical build estimate
$115,500-$170,500
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.
Choosing a builder for a garage conversion in Scarborough is mostly a question of who carries the structural risk: the vehicle-door opening has to be closed with a load-bearing wall, and the existing footing has to be proven or replaced before anyone quotes a finish package. We hold design, permit and construction on one contract, so the assessment that finds a failing slab is the same party that prices the remedy - no change order handed over between a designer and a trade halfway through the April-November season. Ask any Scarborough contractor for the footing detail and the fire-separation detail in writing before signing; those two drawings are where conversion budgets are won or lost.
Everything you need to know about our services.
A typical 700 sq ft build in Scarborough estimates at $115,500-$170,500 - 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: Garage Conversions
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: Garage Conversions
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: Garage Conversions
Rarely as-is. Most Scarborough garage slabs are shallow, uninsulated and poured above the 1.2 m frost line, so they fail both the structural and the thermal requirement for habitable space. We either underpin the perimeter or pour a new insulated slab inside the standing walls - that decision is made at the first site visit and it is the single largest cost variable on this form.
Related service: Our ADU services
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