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Garage Conversions in Uxbridge, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $114,500-$169,000 (about $389/sq ft), with $7,500-$13,500 including Durham Region and septic charges in municipal approvals and a May-October construction season.

Converting an existing detached or attached garage into heated, insulated living space or a fully self-contained coach house unit.
Service area
Uxbridge, Ontario
Durham Region
Typical build estimate
$114,500-$169,000
about $389/sq ft in Uxbridge
Municipal approvals
$7,500-$13,500 including Durham Region and septic charges
quoted separately from the build
Build season
May-October
158 cm snow · -5.6°C winter avg
Frost depth
1.2 m
footing depth, OBC Part 9
Local market
21,556
residents · walkability 30/100
Uxbridge calls itself the Trail Capital of Canada, and the moraine kettle-and-kame topography that makes those trails also makes the building sites: sharply rolling ground where a level 700 sq ft ADU pad often needs a retaining wall. We budget site grading as a distinct line here, not as a rounding error. Uxbridge permits additional dwelling units; the Oak Ridges Moraine covers most of the township and the historic downtown carries heritage designations.
Moraine acreage on private servicing surrounding a compact serviced village with Victorian-era lots.
A garage was never built to be lived in: the slab sits above frost, the walls are usually uninsulated single-wythe, and the header over the vehicle door carries nothing. Every Uxbridge conversion therefore starts with a structural and thermal assessment of what is already standing. The slab is the decisive item - an existing garage slab rarely bears on a 1.2 m footing, so we either underpin the perimeter or pour a new insulated slab inside the existing walls before any framing begins.
Converting the garage removes a parking space, which is why the 30/100 walkability of Uxbridge matters more on this form than on any other - it decides whether parking relief is arguable or the driveway has to absorb the loss.
Everything you need to know about our services.
A typical 700 sq ft build in Uxbridge estimates at $114,500-$169,000 - about $389/sq ft, set by $7,500-$13,500 including Durham Region and septic charges in approvals, a 1.2 m frost-depth footing requirement and 158 cm of annual snow load. Final pricing follows the site visit.
Related service: Our ADU services
Uxbridge permits additional dwelling units; the Oak Ridges Moraine covers most of the township and the historic downtown carries heritage designations. Approval costs in Uxbridge run $7,500-$13,500 including Durham Region and septic charges, quoted separately from construction so the permit stage holds no surprises.
Related service: Our ADU services
Moraine acreage on private servicing surrounding a compact serviced village with Victorian-era lots. Uxbridge is car-oriented at 30/100 walkability, so parking retention and driveway access constrain the footprint more than the zoning envelope does. We work regularly in Uxbridge village, Goodwood, Leaskdale.
Related service: Our ADU services
Rarely as-is. Most Uxbridge 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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