Custom homes · Ajax
Custom Home Builder in Ajax
Perimeter Homes is a custom home builder for Ajax. We handle knockdown-rebuilds and new homes on your lot, checked against Ajax's own rules before design starts.
Building in Ajax
What shapes a custom home in Ajax
We build in Pickering Village, the south Ajax waterfront, Central and Northwest Ajax. Older Pickering Village and waterfront lots are the main rebuild areas. Check creek and lakeshore hazard mapping early.
How many units the lot allows
The Ajax Zoning By-law (Section 4.4, March 2026 consolidation) allows combinations of up to two attached accessory dwelling units plus one detached unit, so up to four units.
Source: Ajax Zoning By-law, Section 4, as of November 1, 2026A local rule to know
Ajax doesn't allow accessory dwelling units on lands its conservation authority identifies as hazardous, including regulatory flood and erosion hazard limits.
Source: Ajax Zoning By-law, Section 4, 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 Ajax 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 Ajax 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 Ajax
Nearby
Common questions
FAQ
How many units can I build on a lot in Ajax?
The Ajax Zoning By-law (Section 4.4, March 2026 consolidation) allows combinations of up to two attached accessory dwelling units plus one detached unit, so up to four units.
Do I need a permit to knock down a house in Ajax?
Yes. Ontario's Building Code Act requires a permit to demolish and another to construct.
Have you built in Ajax?
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 Ajax.
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.