Custom homes · Whitby
Custom Home Builder in Whitby
Perimeter Homes is a custom home builder for Whitby. We handle knockdown-rebuilds and new homes on your lot, checked against Whitby's own rules before design starts.
Building in Whitby
What shapes a custom home in Whitby
We build in downtown Whitby, Port Whitby, Brooklin and Williamsburg. Older downtown Whitby and Port Whitby lots are the infill opportunity. Brooklin's newer lots and Oak Ridges Moraine areas have their own rules.
How many units the lot allows
Ontario's Planning Act allows up to three units on a serviced urban residential lot. Whitby's By-law 8143-24 sets the standards for an additional unit in an accessory structure (75 m², 5.5 m tall).
Source: Whitby By-law 8143-24, as of November 1, 2026A local rule to know
Whitby has more than one zoning by-law, and the town recommends a Planning Inquiry to confirm which rules apply to your property.
Source: Town of Whitby: ADUs, 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 Whitby 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 Whitby 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 Whitby
Nearby
Common questions
FAQ
How many units can I build on a lot in Whitby?
Ontario's Planning Act allows up to three units on a serviced urban residential lot. Whitby's By-law 8143-24 sets the standards for an additional unit in an accessory structure (75 m², 5.5 m tall).
Do I need a permit to knock down a house in Whitby?
Yes. Ontario's Building Code Act requires a permit to demolish and another to construct.
Have you built in Whitby?
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 Whitby.
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.