Custom homes · Toronto
Custom Home Builder in Toronto
Perimeter Homes is a custom home builder for Toronto. We handle knockdown-rebuilds and new homes on your lot, checked against Toronto's own rules before design starts.
Building in Toronto
What shapes a custom home in Toronto
We build in Leaside, Lawrence Park, North York's Willowdale and Bayview corridors, the Beach and High Park. Most custom work in Toronto is a knockdown on an existing lot, and trees, FSI and the zone's "u" value shape what you can build.
How many units the lot allows
Toronto's By-law 474-2023 permits multiplexes of up to four units in Neighbourhoods city-wide (R, RD, RS, RM and RT zones), within roughly the same envelope as a detached house. Multiplexes are exempt from FSI and can be up to 10 m tall where the zone limit is lower.
Source: City of Toronto: Multiplex study, as of November 1, 2026A local rule to know
Toronto protects private trees of 30 cm diameter or more and all City street trees, and requires a Tree Declaration Form with every building or demolition permit application.
Source: City of Toronto: Garden suites, as of November 1, 2026Province-wide baseline
Ontario's Planning Act and O. Reg. 299/19 allow up to three residential units on a serviced urban residential lot, which matters if you want a suite in your new house or a garden suite out back.
Source: O. Reg. 299/19, as of November 1, 2026Permits, demolition and warranty
Ontario's Building Code Act requires a permit to construct or demolish, so a knockdown-rebuild needs both. New homes must be built by a builder licensed by the Home Construction Regulatory Authority and enrolled for the Tarion new home warranty.
Source: Building Code Act, 1992, as of November 1, 2026Check with the city: zoning, trees, heritage and conservation rules depend on your exact lot. We confirm them with the municipality before design starts.
Real Perimeter work
Custom homes we've built
We don't have a finished project to show you in Toronto yet, so the photos below are real Perimeter custom homes elsewhere: Poplar Drive in Burlington, Birch Hill Lane in Oakville and Watersedge in Mississauga. Each one is labelled.
How it works
From your lot to keys
Lot and zoning check
We review your Toronto lot against the local by-law, trees and any conservation or heritage rules.
Design
Plans built around your lot and family, including a suite or garden suite if the lot allows one.
Permits
Demolition (if needed) and building permits, plus any variances.
Build
Stick-built on site by the Perimeter team. If speed matters, a factory-built option is available too.
Other ways to build in Toronto
Nearby
Common questions
FAQ
How many units can I build on a lot in Toronto?
Toronto's By-law 474-2023 permits multiplexes of up to four units in Neighbourhoods city-wide (R, RD, RS, RM and RT zones), within roughly the same envelope as a detached house. Multiplexes are exempt from FSI and can be up to 10 m tall where the zone limit is lower.
Do I need a permit to knock down a house in Toronto?
Yes. Ontario's Building Code Act requires a permit to demolish and another to construct.
Have you built in Toronto?
Not a finished project yet. Our nearest completed custom homes are in Burlington, Oakville and Mississauga.
Where is Perimeter Homes based?
258 Springbrook Ave, Ancaster, ON. We build across Southern Ontario.
Start here
Talk to a custom home builder in Toronto.
Dan Carrol and the Perimeter Homes team reply within one business day. A phone number is required so we can call you about your lot.