Modular / prefab · Oshawa
Modular Homes in Oshawa
Perimeter Homes builds modular and prefab homes and garden suites in Oshawa: factory-built, set on your lot, and checked against Oshawa's rules first.
Modular and prefab in Oshawa
Where a factory-built home fits in Oshawa
A modular home is built in sections in a factory, then trucked to your lot and set by crane. It goes through the same building permit as a site-built home. In Oshawa, the right fit usually comes down to lot access, servicing and the local unit rules.
Units allowed on the lot
Oshawa allows up to three residential units on a lot, with at most one in an accessory building, in its R1, R2, R3, R5 and specified other zones.
Source: City of Oshawa: Accessory apartments, as of November 1, 2026Backyard modular suites
A factory-built garden suite has to meet Oshawa's detached unit limits for size, height and setbacks. Our Oshawa garden suite guide lists them, with links to the official sources.
Site logistics
Modules arrive by truck and are set by crane, so street width, overhead wires, trees and the path to the foundation all matter. Larger older lots north of downtown and in established areas suit rebuilds. Watch rail and highway setbacks.
Check with the city: modular homes need the same zoning and building permits as any new home. We confirm the rules for your lot with Oshawa before you order.
Modular / prefab options
Ways to build factory-built
Geohaus garden suites
Perimeter Homes is a Geohaus partner: studio, one- and two-bedroom factory-built suites.
See the layoutsModular model gallery
21 concept designs for garden suites and backyard homes, with sizes adjustable to your lot and local rules.
Browse the modelsPhotos below are finished Geohaus suites, partner builds, labelled as such.
Other ways to build in Oshawa
Nearby
Common questions
FAQ
Can I put a modular home on my lot in Oshawa?
Usually, if the zoning allows the house type and the lot has truck and crane access. It needs the same building permit as a site-built home. Oshawa allows up to three residential units on a lot, with at most one in an accessory building, in its R1, R2, R3, R5 and specified other zones.
Is a modular home built to the same code?
Yes. It has to meet the Ontario Building Code and go through the municipal permit process like any new home.
Can I add a modular garden suite in Oshawa?
Often, yes. See our Oshawa garden suite guide for the local size and height limits.
Do you show prices?
No. Cost depends on the lot, site work and finishes. Tell us about your lot and we'll walk you through it.
Start here
Ask about modular homes in Oshawa.
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.