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Modular Homes in County of Brant, Ontario
Factory-direct modular homes and backyard suites for the County of Brant — the single-tier municipality that surrounds (but is separate from) the City of Brantford, covering Paris, St. George, Burford, Cainsville, Scotland, Oakland, Cathcart and Glen Morris. The County's Zoning By-law 61-16 (§4.5) permits an additional residential unit as-of-right — including a detached suite in your backyard — on both fully-serviced town lots and rural lots on private well & septic. Here's what the by-law allows, what it costs, and the rules that apply.
What you can build in County of Brant
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 County of Brant'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 County of Brant 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? (County of Brant lots typically allow up to ~1,507 sq ft)
On a rural Rural Residential (RR) or Non-Urban Residential (SR/RH) lot, a detached suite is capped at 140 m² (≈1,507 sq ft) for all accessory buildings combined; Agriculture lots and fully-serviced Paris/St. George lots have no fixed m² cap (lot coverage governs). Rural lots must be at least 0.4 ha and pass a well-and-septic capacity review — enter your address for the specifics. Your exact lot may allow more or less — get the real number for your address in seconds.
Check your exact County of Brant address →Can you put a garden suite (ADU) in your County of Brant backyard?
Often, yes — County of Brant permits a detached Additional Residential Unit on most serviced residential lots. The specifics, from County of Brant Comprehensive Zoning By-law 61-16, §4.5 — Additional Residential Units (Office Consolidation, August 2025):
| Max size | Rural RR/SR/RH: up to 140 m² (≈1,507 sq ft) for all accessory buildings combined. Agriculture: no fixed cap (5% lot coverage governs). Serviced urban (Paris/St. George): no fixed cap (15% coverage governs). Outside a settlement, the suite + septic + parking must fit within a 450 m² development area. |
|---|---|
| Where it goes | Inside the house, attached, or in a detached accessory building. On a serviced lot up to four units total (max two detached); on a rural private-serviced lot up to two ARUs — if both are outside a settlement, one must be in or attached to the main house. |
| Height & setbacks | Detached suite: 5.0 m (≈16 ft) in RR/SR/RH, 7.0 m (≈23 ft) in Agriculture, 6.5 m (≈21 ft) urban. Side/rear 1.5 m (RR/SR/RH) or 3.0 m (Agriculture). On a rural lot the suite must sit within 40 m of the main house and meet MDS setbacks from nearby livestock. |
| Parking | 1 additional space per suite, on top of the two for the main house. Outside settlement areas the suite shares the main house’s driveway. |
| Servicing | Full municipal water & sewer (Paris/St. George), or private well & septic on a rural lot at least 0.4 ha (≈1 acre) — a well-and-septic report proving capacity (OBC Part 8) accompanies the building permit. |
| Conservation | Grand River Conservation Authority (GRCA) across most of the County; Long Point Region CA (LPRCA) in the south. A lot near a watercourse, wetland, ravine or floodplain needs a CA permit — and a suite can’t sit in a flood plain or on Natural Heritage lands. |
Getting your building permit in County of Brant
An eligible lot still needs a building permit before anything is delivered. Here's how County of Brant's process actually works — verified against the County of Brant building department's own pages.
How do you apply for an ADU building permit in County of Brant?
Through County of Brant — Development Services, Building Division. Submit the complete building-permit application and supporting documents online through the County of Brant website; questions go to the Building Division at building@brant.ca or 519-442-7268 (519.44BRANT). Electrical is a separate permit through the Electrical Safety Authority (1-877-372-7233). County of Brant's building-permit page ↗
- Confirm zoning — a detached ARU is as-of-right under Zoning By-law 61-16 §4.5. On full municipal water+sewer (Paris / St. George) up to four units per lot (max two detached); on a rural private well+septic lot the lot must be at least 0.4 ha and the suite within 40 m of the main house, with the suite + septic + parking confined to a 450 m² development area outside a settlement.
- Servicing: on a rural lot, have a qualified professional prepare a well-and-septic report proving capacity for the added unit (OBC Part 8) — a septic upgrade or new system needs a licensed designer and a separate sewage-system permit. On a municipal lot the suite connects to your existing water meter and the County confirms servicing capacity.
- Retain a qualified BCIN designer for the OBC construction drawings (Schedule 1: Designer Information) — foundation plan, floor plans, four elevations, cross-sections, plus heat-loss/gain and energy-efficiency design summaries. Complete an MDS I calculation if the lot is outside a settlement area.
- Complete the County's Applicable Law Checklist and obtain any outside approvals it flags — most commonly a Grand River (GRCA) or Long Point Region (LPRCA) conservation-authority permit where the lot is in a regulated area (watercourse, wetland, ravine, shoreline or floodplain).
- Send your site plan to the Grading Department (grading@brant.ca) to confirm whether a lot-grading plan is required.
- Submit the complete application + drawings + fees online through the County of Brant website; respond to plan-review comments; the permit is issued once review is complete and fees are paid.
- Book building inspections through construction to occupancy, plus a separate ESA electrical inspection.
What does a County of Brant ADU permit application need?
- Building-permit application (completed + signed) and an Authorization form where an agent applies
- Schedule 1: Designer Information (BCIN) — the designer's name, BCIN and signature must appear on all drawings
- Minimum Distance Separation (MDS I) calculation where the lot is outside a settlement area
- Site plan showing the roll number (begins 2920), all property lines and structures, the distance from property lines and from the main dwelling to the suite, the septic location, and the driveway/parking
- Full construction drawings drawn to scale — foundation plan, floor plans, four building elevations, and cross-sections
- Well-and-septic report (rural), or a sewage-system permit package / licensed installer's letter confirming the existing septic can accommodate the unit
- Water Service Pipe Sizing Worksheet (municipal water) + the completed Applicable Law Checklist; a Public Works Permit for any work in the municipal road allowance or a new service connection
- Lot-grading plan where the Grading Department determines one is required
How much does an ADU building permit cost in County of Brant?
From the County's 2026 Development Services – Building 'Fees and Charges' schedule (Building Code Act; all fees HST-exempt). A new detached ARU is charged on finished floor area at $1.60 per sq ft plus the $150 base building-permit fee — so a ~1,000 sq ft suite is roughly $1,750 in building-permit fees; an ARU created by renovating an existing building is instead $14.00 per $1,000 of construction value. A rural lot typically adds a septic permit (new/full system $630, repair/alteration $400) plus any plumbing ($150) and water/sanitary connection inspections ($150 each). Confirm current-year figures and your finished floor area with the Building Division (building@brant.ca / 519-442-7268). A qualifying ARU is EXEMPT from development charges under Bill 23 (see below).
| Base building-permit fee | $150.00 (2026 schedule, HST-exempt) |
|---|---|
| New detached ARU | $1.60 per sq ft of finished floor area (a ~1,000 sq ft suite ≈ $1,600 + the $150 base ≈ $1,750) |
| ARU by renovating an existing building | $14.00 per $1,000 of construction value (instead of the per-sq-ft rate) |
| New sewage system / full replacement (rural) | $630.00 (repair/alteration or tile-bed replacement $400.00; septic-tank replacement $230.00) |
| Plumbing & connection inspections | Plumbing-only $150.00; water-service and sanitary-sewer connection inspections $150.00 each |
The Province exempts certain ARUs from Development Charges and parkland-dedication requirements under the Development Charges Act, 1997 (Bill 23) — a major saving versus what a new detached house pays. Confirm the exemption for your specific project with the County of Brant Building Division.
How long does an ADU building permit take in County of Brant?
Ontario's Building Code requires a decision on a complete house-class application within 10 business days. A detached ARU is OBC Part 9 (house class), so the legislated review window is 10 business days for a complete application. A rural well-and-septic review, an MDS calculation, or a GRCA/LPRCA conservation-authority approval can add time before the permit is issued.
Registration: Each ARU must be assigned a separate municipal (civic) address before occupancy — request one from Planning (planning@brant.ca or brant.ca/civicaddress). The County doesn't charge a separate ARU registration or licensing fee.
Worth knowing before you apply
- The building-permit fee for a NEW detached ARU is based on finished floor area ($1.60/sq ft plus the $150 base); an ARU made by renovating an existing building is charged $14 per $1,000 of construction value instead — confirm which applies to your project.
- On a rural lot a well-and-septic report must accompany the application to prove capacity for the added unit — budget for a septic permit (new system $630) if an upgrade is needed.
- Outside a settlement area the suite plus its septic, well, parking and driveway must fit within a 450 m² development area, sit within 40 m of the main house, share the main house's entrance, and meet MDS setbacks from nearby livestock.
- A lot in a Grand River (GRCA) or Long Point Region (LPRCA) regulated area — near a watercourse, wetland, ravine or floodplain — needs a conservation-authority permit before the building permit.
- The big saving: a new house pays development charges, but a qualifying ARU is EXEMPT under Bill 23 — make sure the exemption is applied.
- Electrical is a separate ESA permit, and work in the road allowance (or a new municipal service connection) needs a Public Works Permit through Operations (operations@brant.ca).
Fees and timelines are estimates from County of Brant's published schedules, verified July 10, 2026. Rates and processes change — always confirm current requirements with the building department before you apply.
Grants & financing in County of Brant
Development-charge & parkland relief for additional units — Under the Development Charges Act (Bill 23), a qualifying additional residential unit ancillary to your home is generally exempt from municipal development charges and parkland-dedication requirements — a major saving versus a new detached house. Confirm the treatment for your project with the County of Brant Building Division.
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 →
County of Brant modular homes — FAQ
Can you build a garden suite / ADU in the County of Brant?
Yes — the County of Brant Zoning By-law 61-16 (§4.5) permits an additional residential unit as-of-right, and it may be inside the house, attached, or in a detached accessory building (a backyard suite). On a fully-serviced lot in Paris or St. George up to four units per lot are allowed; on a rural well-and-septic lot up to two, with a septic-capacity review. A building permit is required.
How big can a backyard suite be in the County of Brant?
On a rural Rural Residential (RR) or Non-Urban Residential (SR/RH) lot, up to 140 m² (≈1,507 sq ft) for all accessory buildings combined. In the Agriculture zone there’s no fixed floor cap (a 5% lot-coverage limit governs), and on a fully-serviced urban lot there’s no fixed cap either (15% coverage). Outside a settlement area everything must fit within a 450 m² development area. Enter your address for the specifics.
Can you build an ADU on well and septic in the County of Brant?
Yes. The by-law expressly permits an additional residential unit on a lot with private well and septic (§4.5.b), provided the lot is at least 0.4 hectares (≈1 acre) and a well-and-septic report shows the system can handle the added unit under the Ontario Building Code (Part 8). A septic upgrade or new system needs a qualified designer and a separate permit.
Can you put a modular home in the County of Brant, Ontario?
Yes. On land you own, a CSA A277 modular home on a permanent foundation is legal residential housing under the Ontario Building Code throughout the County of Brant — as the principal dwelling or as an additional residential unit. The Zoning By-law does not permit a mobile home or recreational vehicle as an ARU.
How much does a modular home or backyard suite cost in the County of Brant?
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 the County of Brant?
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 County of Brant Comprehensive Zoning By-law 61-16, §4.5 — Additional Residential Units (Office Consolidation, August 2025); verified by Modular Homes 400 and reviewed by James Clarke, REALTOR®. Always confirm current requirements with the City of County of Brant before you build.