Home/Modular Homes by City/Windsor
Serving Windsor & Essex County
Modular Homes in Windsor, Ontario
Factory-direct modular homes and backyard suites for the City of Windsor — Sandwich, Walkerville, Riverside, Ojibway, and South Windsor. Windsor permits a detached additional dwelling unit (ADU) on most residential lots, with no fixed floor-area cap. Here's what the by-law allows, what it costs, and the one firm requirement: full municipal services.
What you can build in Windsor
Full modular homes — from $175,696. 29 models from 560 to 1,405 sq ft, 1–3 bedrooms — factory-built to the Ontario Building Code and set on a permanent foundation (a real, permanent house, not a “trailer”).
Backyard suites (ADUs) — from $96,244. 7 compact models built for garden-suite and in-law-suite use, sized to fit what Windsor's by-law allows.
All homes are CSA-certified (A277 modular / Z240MH manufactured), finished in the factory, and delivered ready for foundation and hook-up. What's the difference between modular, manufactured, and mobile? →
Find your backyard suite — 3 quick questions
We'll narrow the models that fit a typical Windsor backyard allowance to the ones that fit your life. No email needed.
1 · Who's it for?
2 · What layout?
3 · What size feels right? (Windsor lots typically allow up to no fixed cap)
Windsor has no fixed floor-area cap — a detached ADU is limited by the 8 m height limit (and can’t exceed your house) plus your residential zone’s accessory-building coverage. Full municipal water + sewer are required. Your exact lot may allow more or less — get the real number for your address in seconds.
Check your exact Windsor address →Can you put a garden suite (ADU) in your Windsor backyard?
Often, yes — Windsor permits a detached Additional Residential Unit on most serviced residential lots. The specifics, from City of Windsor Comprehensive Zoning By-law 8600 §5.99.80 (ADU framework, 2023):
| Max size | No fixed floor-area cap — limited by height + your residential zone’s accessory-building coverage |
|---|---|
| Max height | 8.0 m (≈26 ft) pitched roof / 6.0 m (≈20 ft) low-slope — and never taller than the main house |
| Setbacks | 1.2 m (≈4 ft) from the rear and interior side lot lines |
| Units per lot | Up to 3 dwelling units; at most one in a detached building |
| Permitted on | Single-detached, semi-detached, duplex & townhouse lots (not higher-density forms) |
| Parking | 1 additional space per ADU (exemption in the core/transit areas) |
| Servicing | Full municipal water + sanitary sewer REQUIRED; the unit must front a public street and can’t be severed |
| Conservation | Essex Region Conservation Authority (ERCA) — basement units barred in the regulated floodplain |
Grants & financing in Windsor
See every program → Ontario ADU Grants Directory
A modular or prefab home on a permanent foundation is financed like any house. CMHC Prefab Plus allows an insured mortgage with as little as 5% down on the first $500,000, with construction funds released in stages. How modular home financing works →
Thinking of the suite as a rental? Run the numbers →
Windsor modular homes — FAQ
Can you build a backyard suite in Windsor?
Yes. Windsor permits a detached additional dwelling unit on single-detached, semi-detached, duplex, and townhouse lots — up to 3 units per lot with at most one detached — provided the lot is on full municipal water and sewer. There’s no fixed floor-area cap; size is governed by the 8 m height limit and your zone’s accessory-building coverage.
How big can an ADU be in Windsor?
There’s no fixed m² cap — the detached unit is limited by the 8 m height (and can’t be taller than your house) and the underlying residential zone’s accessory-building coverage and setbacks (1.2 m from the side and rear). Check your address for the practical number.
Can you put a modular home in Windsor?
Yes. On land you own, a modular home on a permanent foundation is legal residential housing under the Ontario Building Code throughout Windsor, subject to standard zoning and permits.
How much does a modular home or backyard suite cost in Windsor?
Modular home models start at $175,696 and run to about $338,000 for the largest layouts; backyard ADU models start at $96,244. Site work, foundation, delivery, and permits are additional.
Can I get a mortgage on a modular home in Windsor?
Yes — on a permanent foundation it is financed as real property, including via CMHC Prefab Plus (5% down on the first $500,000).
Local rules summarized from City of Windsor Comprehensive Zoning By-law 8600 §5.99.80 (ADU framework, 2023); verified by Modular Homes 400 and reviewed by James Clarke, REALTOR®. Always confirm current requirements with the City of Windsor before you build.