Home/Modular Homes by City/Richmond Hill
Serving Richmond Hill & York Region
Modular Homes in Richmond Hill, Ontario
Factory-direct modular homes and backyard suites for Richmond Hill and York Region. Here's what Richmond Hill's garden-suite by-law allows in your backyard, what it costs, and the rules that apply.
What you can build in Richmond Hill
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 Richmond Hill'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 Richmond Hill 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? (Richmond Hill lots typically allow up to ~750 sq ft)
Richmond Hill needs a 550 m² lot + 18 m frontage and Site Plan Control (≈10–14 extra weeks) — the strictest in the GTA. Your exact lot may allow more or less — get the real number for your address in seconds.
Check your exact Richmond Hill address →Can you put a garden suite (ADU) in your Richmond Hill backyard?
Often, yes — Richmond Hill permits a detached Additional Residential Unit on most serviced residential lots. The specifics, from Richmond Hill Zoning By-law 66-18 as amended (ARU amendments through 2025–2026):
| Max size | 90 m² (≈969 sq ft); detached structures capped at 40% lot coverage |
|---|---|
| Max height | 6.0 m (≈20 ft) |
| Setbacks | 1.0 m (≈3 ft) rear; 1.2 m (≈4 ft) interior side |
| Minimum lot | 550 m² (≈5,920 sq ft) area and 18 m (≈59 ft) frontage — the highest thresholds in the GTA |
| Parking | 1 dedicated space, in addition to your home’s parking |
| Process | Site Plan Control required (landscape, grading, and servicing plans by a licensed engineer) — typically adds 10–14 weeks |
| Conservation | Lake Simcoe Region Conservation Authority (LSRCA) |
Grants & financing in Richmond Hill
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 →
Richmond Hill modular homes — FAQ
Can you put a garden suite in Richmond Hill?
Yes — on a lot that meets the minimum size (550 m² and 18 m frontage), with a building permit. Richmond Hill also requires Site Plan Control, which adds about 10–14 weeks.
How big can a garden suite be in Richmond Hill?
Up to 90 m² (≈969 sq ft), with detached structures capped at 40% lot coverage. Check your address for the specifics.
Can you put a modular home in Richmond Hill?
Yes. On land you own, a modular home on a permanent foundation is legal residential housing under the Ontario Building Code throughout Richmond Hill, subject to standard zoning and permits.
How much does a modular home or backyard suite cost in Richmond Hill?
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 Richmond Hill?
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 Richmond Hill Zoning By-law 66-18 as amended (ARU amendments through 2025–2026); verified by Modular Homes 400 and reviewed by James Clarke, REALTOR®. Always confirm current requirements with the City of Richmond Hill before you build.