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Serving Collingwood & Simcoe County
Modular Homes & Garden Suites in Collingwood, Ontario
Factory-direct modular homes and backyard suites for Collingwood and Simcoe County. Here's what Collingwood's additional-dwelling-unit rules allow in your backyard, what it costs, and the by-law that applies.
What you can build in Collingwood
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 Collingwood'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 Collingwood 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? (Collingwood lots typically allow up to ~900 sq ft)
Collingwood has no fixed floor-area cap — a detached suite is governed by the 15% accessory-coverage limit. Your exact lot may allow more or less — get the real number for your address in seconds.
Check your exact Collingwood address →Can you put a garden suite (ADU) in your Collingwood backyard?
Often, yes — Collingwood permits a detached Additional Residential Unit on most serviced residential lots. The specifics, from Town of Collingwood Zoning By-law 2010-040 §4.40 (amended by By-law 2024-053):
| Max size | No fixed floor-area cap — governed by the 15% accessory-building coverage limit |
|---|---|
| Max height | 7.5 m (≈25 ft) |
| Setbacks | 1.5 m (≈5 ft) rear & interior side |
| Parking | None required for a suite up to 70 m² (≈753 sq ft); otherwise 1 space |
| Servicing | Municipal services, or private septic where capacity is confirmed |
| Conservation | Nottawasaga Valley Conservation Authority (NVCA) near watercourses or hazard lands |
Check your specific Collingwood address →
Garden suite, laneway suite, in-law suite, ARU, ADU — different names for the same thing: a small, self-contained home in the backyard. New to the idea? Start with prefab garden suites for Ontario — what one costs in Collingwood, and the models that fit →
Collingwood's by-law is verified in our checker, so you can check if a garden suite is allowed at your Collingwood address in about a minute.
A garden suite on a well and septic in Collingwood
Can I add a garden suite on a septic system in Collingwood?
Yes, if your septic system can carry the house and the suite together. A garden suite with a kitchen and bathroom adds a new source of sewage, so a qualified septic designer checks the combined load before you order. If the system has room, the suite can connect to it; if not, it may need to be altered, expanded or replaced.
In Collingwood: The septic check has to be in writing (a septic capacity letter) before the building permit is issued.
Who approves septic systems in Collingwood?
The Town of Collingwood approves septic systems itself, so the septic review and the building permit both go through the municipality.
Town of Collingwood: septic permits ↗ · 705-445-1030 · service@collingwood.ca
What to gather, and why even a small suite needs the check: our guide to garden suites on a septic system →
From Town of Collingwood’s own page, checked October 24, 2026. Confirm with them before you apply.
Grants & financing in Collingwood
County of Simcoe — Secondary Suites Program (open) — A 15-year forgivable loan of up to $50,000 to build a secondary or garden suite rented at or below CMHC average market rent; up to $5,000 of it is a non-repayable accessibility grant. Details →
Town of Collingwood — Rapid Additional Residential Unit (ARU) Initiative (open) — A $10,000 grant from the Town once your zoning certificate and building permit are approved and you commit to rent the new unit year-round for five years, plus $5,000 more if the County of Simcoe approves you for its Secondary Suites loan. 2026 grant funds of $100,000, first-come; apply after the zoning certificate and building permit. Details →
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 →
Collingwood modular homes — FAQ
Can you put a garden suite in Collingwood?
Yes. Collingwood permits a detached additional dwelling unit on most residential lots — subject to the coverage, height, and setback rules and a building permit.
How big can a garden suite be in Collingwood?
There is no fixed floor-area cap — the size is governed by the 15% accessory-coverage limit. A suite up to 70 m² (≈753 sq ft) needs no parking space. Check your address for the practical number.
Can you put a modular home in Collingwood?
Yes. On land you own, a modular home on a permanent foundation is legal residential housing under the Ontario Building Code throughout Collingwood, subject to standard zoning and permits.
How much does a modular home or backyard suite cost in Collingwood?
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 Collingwood?
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 Town of Collingwood Zoning By-law 2010-040 §4.40 (amended by By-law 2024-053); verified by Modular Homes 400 and reviewed by James Clarke, REALTOR®. Always confirm current requirements with the municipality before you build.