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Rental Income Suites in Caledon, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $269,500-$361,000 (about $385/sq ft), with $9,000-$16,000 including Peel Region and septic permit charges in municipal approvals and a May-October construction season.

Homeowners across the GTA who want a second dwelling that pays for itself. We size, permit and build a legal rental suite on your existing lot so the unit meets Ontario Building Code fire separation and egress rules and can be tenanted from the day occupancy is signed off.
Service area
Caledon, Ontario
Peel Region
Typical build estimate
$269,500-$361,000
about $385/sq ft in Caledon
Municipal approvals
$9,000-$16,000 including Peel Region and septic permit charges
quoted separately from the build
Build season
May-October
152 cm snow · -5.4°C winter avg
Frost depth
1.2 m
footing depth, OBC Part 9
Local market
76,581
residents · walkability 22/100
Most of Caledon sits inside the Greenbelt or on the Niagara Escarpment, and almost every rural property runs on private well and septic. An accessory dwelling unit here starts with a septic loading calculation - the existing bed often cannot legally take another bedroom, and a new tile field, not the building, becomes the largest single line in the budget. Caledon permits additional residential units, but most rural properties require a septic capacity assessment and, on the escarpment, Niagara Escarpment Commission approval.
Rural acreages on private well and septic; Greenbelt and escarpment overlays cover a majority of the town's land area.
A unit built to rent is designed around durability and turnover: finishes that survive tenancies, a laundry hookup inside the suite, and metering arranged so utilities are not argued about later. We register the unit properly with Peel Region so it is a legal second dwelling from day one - an unregistered suite in Caledon is uninsurable and unenforceable against a tenant. Caledon's 76,581 residents and employers including Husky Injection Molding and Caledon Hills set the realistic rent, which is the number the whole build budget should be tested against.
Everything you need to know about our services.
A typical 700 sq ft build in Caledon estimates at $269,500-$361,000 - about $385/sq ft, set by $9,000-$16,000 including Peel Region and septic permit charges in approvals, a 1.2 m frost-depth footing requirement and 152 cm of annual snow load. Final pricing follows the site visit.
Related service: Our ADU services
Caledon permits additional residential units, but most rural properties require a septic capacity assessment and, on the escarpment, Niagara Escarpment Commission approval. Approval costs in Caledon run $9,000-$16,000 including Peel Region and septic permit charges, quoted separately from construction so the permit stage holds no surprises.
Related service: Secondary Suites
Rural acreages on private well and septic; Greenbelt and escarpment overlays cover a majority of the town's land area. Caledon is car-oriented at 22/100 walkability, so parking retention and driveway access constrain the footprint more than the zoning envelope does. We work regularly in Bolton, Caledon East, Inglewood.
Related service: Our ADU services
Yes - a second dwelling has to be a legal, permitted unit with Peel Region before it is tenanted. An unregistered suite in Caledon typically voids the property insurance, cannot be enforced under the Residential Tenancies Act, and becomes an open liability at resale.
Related service: Our ADU services
Get a free, no-obligation quote from GTA ADU Builders - zoning review, permit drawings and construction for ADUs across the GTA.