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ADU Building Permit in Scarborough, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $16,500-$33,000 (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.

Permit and approvals handling - zoning review, by-law compliance, application submission and minor variance representation at the Committee of Adjustment where needed.
Service area
Scarborough, Ontario
City of Toronto
Typical build estimate
$16,500-$33,000
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 adu building permit.
The permit is the whole project's critical path in Scarborough: nothing is ordered and no crew is scheduled until the application clears, and approvals here run $8,000-$14,000 under the City of Toronto fee schedule. We prepare and submit the application, answer the plans-examination comments, and carry the file through zoning, building and - where the lot needs it - Committee of Adjustment, with City of Toronto as the reviewing authority. Approvals are quoted separately from construction on every contract we write, so a fee increase at City of Toronto is visible rather than buried in a build number.
Everything you need to know about our services.
A typical 700 sq ft build in Scarborough estimates at $16,500-$33,000 - 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: Accessory Dwelling Units
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: Accessory Dwelling Units
An as-of-right application in Scarborough is a plans-examination process, not a rezoning - the timeline is set by review cycles and how completely the first submission answers the checklist. Anything needing Committee of Adjustment relief adds a hearing cycle. Fees run $8,000-$14,000 under the City of Toronto fee schedule, quoted separately from construction.
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.