Prefab and Modular Homes in Ontario: Real Prices and All-In Costs (2026)
Prefab and modular homes in Ontario range from under $100,000 for a small tiny home to well over $600,000 for a large finished home.
Both numbers are real. Neither tells you what it costs to legally live in a prefab home on your own Ontario lot.
- HCRA-licensed
- Tarion-enrolled
- Ontario-built
This guide gives you both numbers: the price a builder quotes, and the all-in cost of a finished, occupied home. It also shows exactly what fills the gap between them.
About the author
Sean Stevenson is Chief Marketing Officer and Buyer Experience Lead at My Own Cottage Inc., an HCRA-licensed, Tarion-enrolled prefab home builder based in Orillia, Ontario. For five years, Sean has guided Ontario buyers through the full prefab cottage process alongside the company's build team — from lot assessment and all-in budgeting to zoning, permits, development charges and final occupancy. He focuses on the part most buyers underestimate: what a factory-built cottage actually costs once the foundation, servicing and approvals are accounted for.
The two budgets every Ontario prefab buyer needs
Every Ontario prefab project has two budgets. Confusing them is the most expensive mistake in this market.
- Budget one: the quoted price. This is what a builder's website shows. Depending on the builder, it covers the shell (framing, cladding, windows, exterior doors and roof) or a finished home delivered to your lot.
- Budget two: the all-in cost. This is every dollar from raw land to a legally occupied home: site preparation, foundation, delivery and crane, septic, well, utility connections, permits, development charges, HST, finishing and landscaping.
On a mid-sized Ontario build, the gap between the two is typically $100,000–$300,000.
In the GTA, where development charges are highest, it can pass $400,000. Everything on this page is about making that gap visible before you sign anything.
Prefab and modular home prices in Ontario by type, size and finish (2026)
Prices vary this widely because these are different products, not because quality varies at random. Modular homes, panelized and kit homes, log kits, garden suites and tiny homes each have their own cost structure, certification path and financing options.
| Home type | Typical size | Quoted price (CAD) | All-in, excluding land | Mortgage-eligible? |
|---|---|---|---|---|
| Modular home, standard | 1,200–1,500 sq ft | $150,000–$265,000 | $350,000–$525,000 | Yes, when permanently affixed to a foundation |
| Modular home, Ontario dealer list prices | 1,165–1,717 sq ft | $235,500–$292,000 delivered and installed | $270,000–$380,000 | Yes, when permanently affixed |
| Modular home, premium finish | about 1,500 sq ft | quote only | $300,000–$675,000 turnkey | Yes, when permanently affixed |
| Panelized or kit home | 1,000–1,500 sq ft | $80,000–$150,000 (shell) | $250,000–$420,000 | Yes, once finished on a permanent foundation |
| Log or timber kit | 576–4,300 sq ft | about $33,000–$329,000 (kit only) | $200,000–$380,000 | Yes, once finished on a permanent foundation |
| Garden suite | about 600 sq ft | from $123,000 | $140,000–$230,000 | Usually through home equity or a construction loan |
| Tiny home | 350–550 sq ft | $95,600–$116,000 | $110,000–$165,000 | Only if permanently affixed; homes on wheels need chattel financing |
All prices CAD, excluding HST and land. All-in estimates include foundation, site preparation, utility connections and finishing. Dealer, log kit and tiny home prices are from published price lists as listed October 2026 (see How we verified); one log kit maker notes its list is not current. The "standard", "premium", panelized and all-in ranges are My Own Cottage estimates.
A tiny home on wheels isn't automatically exempt from the building code. Ontario's tiny homes guide says a structure on wheels can count as a building, needing permits, if it stays in one place or is hooked up to services.
Shell vs closed-in vs turnkey: what your quote actually covers
- Shell. The structural envelope only: framing, cladding, windows, exterior doors and roof. No foundation, mechanical systems or interior finishing. Kit and log home companies usually quote at this level.
- Closed-in. The shell plus insulation, vapour barrier and rough-in mechanical systems. Foundation, site work and finishing are contracted separately. For a CSA A277-certified home, this is when the in-factory inspections happen, so the envelope's quality is checked before the home leaves the plant.
- Turnkey. Fully finished and move-in ready. My Own Cottage's Water's Edge (988 sq ft, 2 bed, 1 bath) starts at $324,500 delivered and installed. We build anywhere in Ontario, and delivery to your lot is confirmed after our first site visit.
Always ask a builder to list in writing what is included and excluded. A $200,000 shell quote and a $200,000 turnkey quote describe completely different total projects.
My Own Cottage models: published Ontario prices (2026)
These are our preconfigured models with their published starting prices, delivered and installed. Each price matches our live catalogue at /cottages/ (checked Oct 6, 2026).
| Model | Size | Bedrooms / baths | Starting price |
|---|---|---|---|
| Fox Den | 505 sq ft | 1 / 1 | $229,500 |
| Pine View | 540 sq ft | 1 / 1 | $229,500 |
| Willow | 564 sq ft | 1 / 1 | $229,500 |
| Kingswood | 646 sq ft | 1 / 1 | $259,500 |
| Hideaway | 788 sq ft | 2 / 1 | $279,500 |
| Lake View | 741 sq ft | 1 / 1 | $284,500 |
| Orchard | 992 sq ft | 2 / 1 | $289,500 |
| Bay Breeze | 646 sq ft | 1 / 1 | $299,500 |
| Water's Edge | 988 sq ft | 2 / 1 | $324,500 |
| Haven | 1,066 sq ft | 2 / 1 | $339,500 |
| Sunnyside | 1,056 sq ft | 2 / 2 | $339,500 |
| Eagle's Nest | 1,170 sq ft | 3 / 1 | $369,500 |
| Harbour Side | 1,269 sq ft | 3 / 2 | $379,500 |
| Hudson | 1,550 sq ft | 3 / 2 | $524,500 |
| Algonquin | 2,125 sq ft | 4 / 2 | $629,500 |
Prices are model starting prices. Foundation, site preparation, utility connections, permits and development charges are extra; the full all-in breakdown is below.
For our Large and Estate designs, 1,550 to 3,373 sq ft from $519,500, see our guide to luxury prefab homes.
My Own Cottage is HCRA-licensed and Tarion-enrolled, and every model is built to the Ontario Building Code in our CSA A277-certified facility in Orillia and delivered anywhere in Ontario. See floor plans, specifications and design options for all 33 models in our catalogue.
Browse plans by size:
Affordable prefab homes in Ontario: what's possible under $100,000 and under $250,000
Affordable is always an all-in figure, never a package price on its own. The same package can cost $80,000–$150,000 more to finish on a rural, unserviced lot than on a flat lot with municipal services.
| Budget (quoted price) | What it buys in Ontario | Realistic all-in, excluding land |
|---|---|---|
| Under $100,000 | A tiny home of about 350 sq ft from an Ontario dealer (listed at $95,600, October 2026), or a log or kit shell you finish yourself | $110,000–$165,000 on a serviced lot |
| $100,000–$165,000 | A garden suite of about 600 sq ft (one Ontario dealer lists one at $123,000), or a larger kit home before finishing | $140,000–$240,000 |
| $165,000–$250,000 | Our smallest finished models: Fox Den, Pine View and Willow at $229,500 delivered and installed | $250,000–$280,000 on a serviced lot |
Under $100,000. Nothing in our own catalogue is under $100,000. At this budget you're choosing between a small tiny home from a dealer and a kit or shell that you or your trades finish. A kit you assemble yourself can also change your warranty: if the owner takes significant control of the build, Tarion treats it as an owner-built home, which has no warranty coverage.
Under $250,000. A sub-$250,000 all-in build of a full-size primary home on serviced land isn't realistic in most of Ontario in 2026. The paths that do work are:
- A garden suite on land you already own. Under Bill 23, one unit in an outbuilding such as a garden suite is exempt from development charges on an urban residential lot with municipal water and sewer, as long as the main house has no more than two units. Confirm with your municipality, because rules have changed since 2022.
- A tiny home or small model on a rural lot where you can supply the well and septic.
Six ways to keep the all-in cost down
- Choose a flat lot with municipal services. It removes well, septic and most site-preparation costs.
- Use a slab-on-grade foundation unless the site needs more. A full basement is the single biggest optional cost.
- Build within the builder's standard delivery radius.
- Keep to standard specifications and upgrade only what matters to you.
- Claim every HST rebate you qualify for; the rebates changed a lot in 2026 (see Financing).
- Build smaller now. Modular homes can be expanded later.
Worked example: what a rural Ontario prefab home actually costs
This is the number most builders never publish. It's a worked example, not a single customer's invoice: a standard modular package bought at $185,000 and placed on a rural lot outside Barrie with a crawl-space foundation.
| Item | Cost (CAD) |
|---|---|
| Modular package | $185,000 |
| Crawl-space foundation | $15,000 |
| Site preparation and grading | $18,000 |
| Septic system | $28,000 |
| Well drilling | $10,000 |
| Utility connections (hydro, telecom) | $12,000 |
| Delivery and crane | $8,000 |
| Permit fees | $2,500 |
| Interior finishing and appliances | $40,000 |
| Landscaping and driveway | $8,000 |
| Total before HST | about $326,500 |
That's a long way from the $185,000 brochure price. The same home in the GTA, with development charges and higher labour costs, moves toward $420,000–$500,000 all-in. Build a 10–15% contingency into every estimate.
All-in cost ranges for Ontario buyers
| Cost item | Typical range (CAD) |
|---|---|
| Prefab or modular package | $150,000–$265,000 |
| Foundation: slab on grade | $6,000–$15,000 |
| Foundation: crawl space | $10,000–$20,000 |
| Foundation: full basement | $30,000–$100,000 |
| Site preparation and grading | $10,000–$25,000 |
| Septic system | $10,600–$50,000 |
| Well drilling | $3,000–$15,000 |
| Utility hookups (hydro, gas, telecom) | $6,800–$20,000+ |
| Delivery and crane | $3,000–$12,000 |
| Building permit fees | $500–$5,000+ |
| Development charges, GTA | $20,000–$80,000+ |
| Interior finishing and upgrades | $20,000–$60,000+ |
| Landscaping and driveway | $5,000–$20,000 |
| HST | 13%, less any rebates you qualify for |
The worked example and these ranges are My Own Cottage estimates. Permit requirements vary by municipality.
What moves the price
Two buyers with the same square footage in the same area can end up $200,000 apart. The biggest swings come from:
- Foundation.Slab $6,000–$15,000, crawl space $10,000–$20,000, full basement $30,000–$100,000. It's the most underestimated line, especially on your own land, when a factory price arrives before anyone has looked at the site.
- Site conditions.Slope, rock, soil bearing capacity and drainage vary across Ontario and move the cost more than any other line. Get a site assessment before committing to a package.
- Delivery access.Standard crane and transport runs $3,000–$12,000. Remote cottage country, island lots and far-northern sites cost more, and trades can be harder to book.
- Floor plan.A simple rectangular single-storey plan costs less to build and assemble. Every extra module adds crane lifts, joins and finishing.
- Model tier.An entry-level preconfigured model and a high-performance custom build serve different buyers at different prices. Know which tier a quote is before you compare it.
Price ranges by region
Where you build can shift the all-in cost by $80 or more per square foot, about $120,000 on a 1,500 sq ft home.
| Region | Turnkey cost per sq ft | Main cost driver |
|---|---|---|
| GTA and urban Southern Ontario | $230–$450+ | Development charges, labour |
| Ottawa and Eastern Ontario | $210–$300 | Labour, permit timelines, development charges |
| Muskoka and cottage country | $200–$280 plus access costs | Remote delivery, septic, waterfront permits |
| Northern Ontario | $170–$200 | Transport distance |
| Rural Ontario | $170–$200 plus off-grid costs | Well, septic, off-grid systems |
Regional ranges are My Own Cottage estimates.
- GTA and urban Ontario.Development charges dominate. A garden suite that qualifies for the Bill 23 exemption avoids them, and its rental income can help carry the build.
- Ottawa.Development charges changed twice in 2026, and council approved a large cut in July 2026. Check the City of Ottawa's current schedule, or see our Ottawa cost breakdown.
- Muskoka and cottage country.Seasonal access, remote delivery and cottage septic systems ($30,000–$50,000) push totals above the per-square-foot base. Conservation authority permits add cost and time on waterfront lots. See our prefab cottages Ontario guide.
- Northern and rural Ontario.Lower base costs are partly offset by transport. Off-grid systems add $25,000–$50,000. Confirm transport costs before committing.
Prefab, modular, prefabricated or manufactured: what's the difference?
"Prefab" and "prefabricated" mean the same thing: a home built partly or wholly in a factory. Modular is one kind of prefab. The label matters because it decides which standard the home is certified to, and that shapes your permits, warranty and mortgage.
| Type | How it's built | Certification | Typical setting |
|---|---|---|---|
| Modular | Finished 3D modules built in a factory, craned onto a permanent foundation | CSA A277 | Your own lot |
| Panelized or kit | Wall, floor and roof panels or pre-cut parts, assembled on site | Built to the Ontario Building Code on site | Your own lot |
| Manufactured (mobile) | A complete home on its own chassis | CSA Z240 MH | Often a land-lease community |
What CSA A277 is. CSA A277 is the national procedure for certifying prefabricated buildings, modules and panels. An accredited certification body audits the factory's quality program and inspects units in the plant, and certified units carry a certification label. It isn't a building code: Ontario's tiny homes guide lists it as one of the two CSA certification standards the Building Code recognizes for factory-built buildings. The home must still meet the code where it's installed, and the foundation, delivery and set-up are inspected on site under your building permit.
Modular homes in Ontario: build new or buy resale?
Search "modular homes for sale in Ontario" and you'll find two different markets that look alike in the results.
| What differs | New modular home, built to order | Resale home in a land-lease community |
|---|---|---|
| Where you find it | Builder websites | Kijiji, Facebook Marketplace, MLS |
| Land | You own it | Usually leased, with a monthly lot fee |
| Timeline | Built to order, about 4–8 months | Often available right away |
| Warranty | Tarion statutory warranty when the builder supplies and installs it | Case by case; seasonal homes are excluded |
| Mortgage | Eligible for CMHC-insured financing when permanently affixed to a foundation, including CMHC Prefab Plus | Usually a chattel loan, which CMHC can now insure through Chattel Financing |
| Equity | The home and land together | The home only |
The leased-land catch. A resale listing shows the home's price clearly, but not the monthly land lease for the lot it sits on. That fee runs for as long as you own the home and builds no equity. After ten years you own the home but nothing under it. Leased land can suit buyers who want community living or have no land, but the two options aren't financially equivalent.
Your foundation and land decide your mortgage. Since May 2026, CMHC's Prefab Plus program insures mortgages on new prefab homes that are permanently affixed to a foundation, with 5% minimum down, for homes under $1.5 million. The home must be suitable for year-round living with year-round vehicle access. Homes that aren't permanently affixed are financed with a chattel loan instead.
Tarion and resale. Tarion's warranty stays with a home for seven years from first possession. A later owner gets the rest of it, but should contact Tarion with their purchase agreement and deed to be added to the file. For a manufactured home on leased land, coverage depends on the facts and is decided case by case.
Modern prefab homes in Ontario: styles and the climate question
In prefab, "modern" means something specific: shed or flat rooflines, large glazing, open-plan living, clean horizontal lines and a deliberate mix of materials, often dark cladding with glass and wood. Ontario buyers usually pick from five styles.
| Style | What defines it | Our closest models |
|---|---|---|
| Muskoka modern | Dark board-and-batten, cedar or metal cladding, a shed roof and lake-facing glass | Water's Edge (988 sq ft), Solaris (1,418 sq ft) |
| West Coast modern | Horizontal cladding, low-slope overhangs, big glazing | Lake View (741 sq ft) |
| Scandinavian | Natural timber, a restrained palette, cosy interiors | — |
| Modern farmhouse | A pitched metal roof and board-and-batten outside, an open plan inside; easier to approve in rural areas with traditional design rules | — |
| High-performance | Airtight envelope, triple glazing and continuous insulation, which shape a clean exterior | Any model, by specification |
Does modern prefab work in an Ontario winter? Yes, when it's engineered for Ontario rather than adapted from milder climates.
- Roofs.A flat roof is allowed but needs engineering for the local snow load and drainage. That's why most Ontario modern prefabs use a single-pitch shed roof, which gives the same look and sheds snow naturally.
- Large windows.Big glass areas need high-performance (usually triple-pane) windows. They may also require the energy-code performance route, where better walls and roofs make up for the glass.
- Fresh air.An airtight modern envelope needs mechanical ventilation, normally a heat recovery ventilator (HRV).
Modern design costs more than a standard prefab of the same size: the roof engineering, glazing, open spans and cladding all add up. Ask for those line items separately in any quote.
How to buy and build a prefab home in Ontario, step by step
Buying a prefab home isn't like buying a resale house. You aren't buying a finished home on a lot; you're commissioning one to be built and installed on land you own or are buying. Most projects take 4–8 months from choosing a model to moving in.
- Land first. You need the lot before you commission the home. Its zoning, services (municipal or well and septic) and site conditions decide much of your budget, so get a site assessment before you pick a model.
- Choose and customize your model. Pick a floor plan that suits the lot, then the exterior, roofline, windows, kitchen and finishes. Everything is finalized before factory production starts.
- Permits and site preparation. You need a building permit from your municipality for a factory-built home, just as for one built on site. Expect 4–12 weeks for approval depending on the municipality. On a rural lot, the septic system needs its own permit. Clearing, grading and the foundation can run while the home is being built.
- Factory build and delivery. Most of our models take 6–12 weeks in the factory, where they're built and inspected under the CSA A277 program. Delivery is timed to your site being ready, and crane placement usually takes 1–3 days.
- Installation, finishing and occupancy. The home is set on the foundation, connected to services and finished. The municipality's final inspection clears it for occupancy.
What to check before you buy
- The builder's licence.Every new home builder and seller in Ontario must be licensed by the Home Construction Regulatory Authority (HCRA). Check the builder in the Ontario Builder Directory at obd.hcraontario.ca, the official source of background information about licensed builders and vendors. Our page on how to compare prefab home builders in Ontario lists the other checks to run.
- Certification.Ask which body certifies the factory under CSA A277, and check that the label will be on your home.
- What's in the price.Get foundation, site work, delivery distance, utility connections, permit fees and finishing written in or out of the quote.
- Warranty.Ask how Tarion coverage applies to your contract. It covers homes built under contract on your own land, but if you take significant control of the build yourself, it can become an owner-built home with no warranty.
- Timeline.Ask for written target dates for the permit, factory start, delivery and occupancy.
Ontario Building Code and permits for prefab homes
A prefab home goes through the same approvals as one built on site. Ontario's guidance is direct: you need a building permit whether a home is built on your property or built in a factory and shipped there.
How the code applies to factory-built homes. The Ontario Building Code recognizes two CSA certification standards for factory-built buildings, and CSA A277 is one of them. The work certified in the factory is accepted under that program. Everything done on your lot is inspected under your building permit: the foundation, set-up, connections and finishing.
What your municipality will check:
- Zoning.Residential use is permitted on the lot, and the home fits the setbacks, height and lot coverage rules.
- Drawings.Site plan, foundation and structural drawings for the permit application.
- Septic, if you're not on sewers.A septic system for a house (design flow of 10,000 litres a day or less) falls under Part 8 of the Building Code. Its permit comes from the municipality or its designated agency, usually the health unit or the conservation authority.
- Conservation authority permits.Waterfront lots, floodplains and wetland areas may need a separate conservation authority permit before the building permit.
- Development charges.These are separate from permit fees and vary widely by municipality.
Adding a unit to an existing property. On most urban residential lots with municipal water and sewer, Ontario allows up to three residential units: three in the house, or two in the house plus one in an outbuilding such as a garden suite. Rural lots on well and septic don't automatically qualify. Ask your municipality what applies to your lot.
For costs and steps by municipality, see our prefab home permits Ontario guide.
What a legitimate prefab contract should include
A CBC News report described an Ontario couple who were told to pay $42,000 more for their prefab home after signing. A clear contract is what prevents that. Before you sign, get these in writing:
- Everything included and excluded:foundation type, site-work scope, delivery distance, utility hookups, finish level and any upgrade allowances as dollar amounts. Tarion's advice for custom homes is that the contract should set out what's included, the builder's work, the cost and the payment schedule.
- Price-change terms:the HCRA says any clause allowing a price increase has to be in the original contract, written clearly and based on objective figures. You can negotiate a cap. An open-ended escalation clause is a red flag.
- The Warranty Information Sheet,which your builder must attach to the contract.
- A lawyer's review,especially of payment timing, liens and holdbacks.
- The builder's credentials:the HCRA licence (Ontario Builder Directory) and the CSA A277 certification body.
What Tarion covers when you build on your own land. A home built under contract on your land (a "contract home") gets Tarion's statutory warranty. If the builder doesn't substantially complete the contract, Tarion may pay the difference between what you paid and the value of the work and materials supplied, up to $40,000. That's less than the deposit protection many buyers have heard of, which applies to purchase agreements, so pace your payments to the work completed. Tarion is changing its deposit coverage from January 1, 2027, so check the current limits when you sign.
My Own Cottage is HCRA-licensed and Tarion-enrolled, and every quote lists inclusions and exclusions in writing.
Financing a prefab home in Ontario
Mortgages. A prefab home that is permanently affixed to a foundation can be financed like any new home. Since May 2026, CMHC's Prefab Plus program insures mortgages on new prefab homes, with:
- 5% minimum down on the first $500,000 and 10% on the rest, for homes under $1.5 million.
- Up to four progress advances: land and site preparation (including foundation, septic and well), the home on delivery, then finishing.
- Conditions: the home must be suitable for year-round living, with year-round vehicle access.
A prefab home that isn't permanently affixed is financed with a chattel loan, which CMHC can now insure for eligible new homes through its Chattel Financing program.
Construction loans. Most builds use a progress-draw mortgage that releases money as stages are finished. Plan for cash flow early in the project, because lenders inspect before each draw.
HST rebates changed a lot in 2026. On a new home you may qualify for several:
| Program | Who qualifies | Up to |
|---|---|---|
| Federal First-Time Home Buyers' GST/HST Rebate (law since March 2026) | First-time buyers of a new home up to $1M, phasing out to $1.5M; owner-built homes count if construction began on or after March 20, 2025 | $50,000 |
| Ontario first-time home buyers' rebate | First-time buyers, on the same terms as the federal rebate | $80,000 of the 8% provincial HST |
| Ontario enhanced new housing rebate (temporary) | All buyers of new homes under $1.85M, for agreements signed or owner-builds started April 1, 2026 to March 31, 2027 | $80,000 |
| Ontario New Home Affordability Payment | Paired with the enhanced rebate | $50,000 |
| Ontario new housing rebate | New homes used as a primary residence | $24,000 |
| Federal GST/HST new housing rebate | New homes up to $450,000, phasing out from $350,000 | $6,300 |
The programs overlap and have dates and price caps that matter. Confirm what applies with your accountant before you sign.
For draw schedules and lender options, see our prefab home financing Ontario guide.
Frequently asked questions: prefab and modular homes in Ontario
How much does a prefab home cost in Ontario?
Quoted prices run from under $100,000 for a small tiny home to $600,000+ for a large finished home. Our models start at $229,500 delivered and installed. All-in, excluding land, a 1,200–1,500 sq ft modular home on a rural lot typically lands at $325,000–$450,000, and more in the GTA.
How much does a modular home cost in Ontario?
Ontario dealers list finished modular homes of 1,165–1,717 sq ft at about $235,500–$292,000 delivered and installed (October 2026). Our models run $229,500–$629,500. Add foundation, site work, servicing, permits and HST for the all-in cost.
How much does a 2-bedroom prefab home cost in Ontario?
Our 2-bedroom models run $279,500–$339,500 delivered and installed, from the 788 sq ft Hideaway to the 1,066 sq ft Haven and Sunnyside. On a rural lot, foundation, site work, septic, well and utilities typically add $100,000 or more on top.
What's the cheapest way to get a prefab home in Ontario?
A garden suite or small model on land you already own, with municipal services and a slab foundation. A qualifying garden suite on an urban serviced lot can also avoid development charges.
What's included in a prefab base price?
It depends on the quote. A shell price covers the structure only. A delivered-and-installed price covers the finished home set on your foundation. Foundation, site work, septic, well, utility hookups, permits, development charges and HST are usually extra, so get every exclusion in writing.
Are prefab, prefabricated and modular homes the same thing?
"Prefab" and "prefabricated" are the same. Modular is one type of prefab: finished 3D modules certified to CSA A277 and craned onto a permanent foundation. Manufactured (mobile) homes are certified to a different standard, CSA Z240 MH.
Can you get a mortgage on a prefab home in Ontario?
Yes, when it's permanently affixed to a foundation. CMHC's Prefab Plus program insures these mortgages with 5% minimum down for homes under $1.5 million. Homes that aren't permanently affixed are financed with chattel loans.
Do prefab homes qualify for HST rebates?
Yes, new prefab homes qualify like any new home. In 2026 that includes the federal first-time buyers' GST/HST rebate (up to $50,000), Ontario's first-time buyers' rebate (up to $80,000) and Ontario's temporary enhanced rebate for all buyers (up to $80,000, until March 31, 2027). Confirm with your accountant.
Do I need a building permit for a prefab or modular home?
Yes. Ontario requires a building permit whether a home is built on site or built in a factory and shipped to your lot. A septic system needs its own permit, and waterfront lots may need a conservation authority permit.
Is a tiny home on wheels a building in Ontario?
It can be. Ontario's guidance says a structure on wheels can count as a building, needing permits, if it stays in one place or is hooked up to water, sewage or power.
How long does it take to build a prefab home in Ontario?
Typically 4–8 months from choosing a model to moving in, including 6–12 weeks of factory build.
Do modern prefab homes work in Ontario winters?
Yes, when they're engineered for Ontario's snow loads and climate, with shed or engineered flat roofs, high-performance windows and mechanical ventilation.
Prefab homes across Ontario
- GTA:Toronto Mississauga Brampton Vaughan Markham Richmond Hill Oakville Burlington Milton Ajax Whitby Oshawa Newmarket Aurora Caledon Halton Hills
- Central Ontario and cottage country:Muskoka Gravenhurst Huntsville Parry Sound Haliburton Kawartha Lakes Peterborough Orillia Midland Collingwood Wasaga Beach Innisfil Georgina Bradford
- Eastern Ontario:Ottawa Kingston Belleville Brighton Cornwall Pembroke Petawawa
- Southwestern Ontario:London Kitchener Cambridge Guelph Woodstock Stratford St. Thomas Brantford Hamilton St. Catharines Grimsby Chatham
- Northern Ontario:Northern Ontario Sudbury North Bay Sault Ste. Marie Thunder Bay Timmins
- Other communities:Bowmanville Orangeville Scugog
Ready to get real numbers for your property?
My Own Cottage is HCRA-licensed and Tarion-enrolled, and builds in our CSA A277-certified facility in Orillia. We give you a full all-in cost breakdown for your lot, not a "starting from" figure, before you commit to anything.
How we verified
Every fact on this page was checked against the source below on October 6, 2026.
| Fact on the page | Source |
|---|---|
| Our model prices and sizes | My Own Cottage catalogue |
| Permit needed for factory-built homes; CSA A277 recognized by the Building Code; tiny homes on wheels | Ontario: build or buy a tiny home — Building Code requirements · permits and inspections |
| Building permits and who issues septic permits | Ontario: citizen's guide to land use planning — building permits |
| Septic systems under Part 8 (10,000 L/day or less) | Ontario: design guidelines for sewage works |
| Three units per lot; development charge exemption for garden suites | Bill 23, More Homes Built Faster Act, 2022 |
| Down payment rules and $1.5M cap | CMHC: what is mortgage loan insurance |
| Prefab Plus, progress advances, chattel financing | CMHC Prefab Plus |
| Federal first-time buyers' GST/HST rebate | Finance Canada, March 2026 · CRA: who can apply |
| New housing rebates; Ontario rebates and payment | CRA RC4028 · Ontario Budget 2026 · Ontario New Home Affordability Payment |
| HCRA licensing and the Ontario Builder Directory | HCRA: licensing · HCRA: before you buy |
| Price-increase clauses | HCRA: builders must honour their contracts |
| Contract homes: warranty and the $40,000 limit; deposit changes in 2027 | Tarion: pre-possession coverage · Tarion: freehold coverage (PDF) |
| What a custom home contract should state | Tarion: five steps for your custom home |
| Warranty for later owners | Tarion: purchaser and homeowner FAQs |
| What CSA A277 and CSA Z240 MH cover | CSA Group: A277 · QAI: factory-built structures · HCRA: definition of a home |
| Dealer modular, garden suite and tiny home prices | Wholesale Housing price list |
| Log kit prices | Outaouais Log Homes price list (the maker says the list is not current) |
| $300,000–$675,000 turnkey range for 1,500 sq ft | Green Building Canada (May 2025) |
| The $42,000 price increase | CBC News |
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