Custom homes · Mississauga
Custom Home Builder in Mississauga
Perimeter Homes is a custom home builder for Mississauga. We handle knockdown-rebuilds and new homes on your lot, checked against Mississauga's own rules before design starts.
Building in Mississauga
What shapes a custom home in Mississauga
We build in Lorne Park, Mineola, Port Credit, Clarkson and Erindale. Lorne Park and Mineola lots are some of the GTA's most active rebuild areas, and infill GFA rules decide the size of the new house.
How many units the lot allows
Mississauga allows up to two additional residential units with a detached, semi-detached or townhouse home, and the city lists "a new build with up to three units" as one option.
Source: City of Mississauga: ARUs, as of November 1, 2026A local rule to know
Mississauga's Zoning By-law 0225-2007 regulates infill houses by "Gross Floor Area (GFA) – Infill Residential", which counts attached garages and attached ARUs but not a detached ARU.
Source: Mississauga By-law 0174-2023, 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
Our nearest real project: Watersedge, a Perimeter build in Mississauga. The photos below are from that project.
How it works
From your lot to keys
Lot and zoning check
We review your Mississauga 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 Mississauga
Garden suites in MississaugaModular homes in MississaugaMultiplex rules in MississaugaAll custom homes
Nearby
Common questions
FAQ
How many units can I build on a lot in Mississauga?
Mississauga allows up to two additional residential units with a detached, semi-detached or townhouse home, and the city lists "a new build with up to three units" as one option.
Do I need a permit to knock down a house in Mississauga?
Yes. Ontario's Building Code Act requires a permit to demolish and another to construct.
Have you built in Mississauga?
Yes. See Watersedge.
Where is Perimeter Homes based?
258 Springbrook Ave, Ancaster, ON. We build across Southern Ontario.
Start here
Talk to a custom home builder in Mississauga.
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.