What does it cost to build a house in Ontario?
Building from scratch gives you the exact home you want. Here is what it really costs to build a custom house in Ontario, and the expenses people forget to budget for.
Quick answer
Building a custom home in Ontario typically costs $250 to $500 or more per square foot for construction, not including land. A modest custom build starts around $250 per square foot, while high-end homes with premium finishes exceed $500. Land, servicing, permits, development charges, and site conditions are large added costs on top of the build.
$250 to $500+
Per sq ft, build only
+ Land
Separate, major cost
HCRA
Builder licensing
10 to 16 mo
Typical build
What does it cost per square foot to build?
Custom home cost is usually quoted per square foot of construction, separate from land. The tier you land in depends on finishes, complexity, and site conditions.
| Tier | Cost per sq ft | What it means |
|---|---|---|
| Modest custom | $250 to $325 | Straightforward design, standard finishes. |
| Mid-range custom | $325 to $425 | Better finishes, more detail and features. |
| High-end / luxury | $425 to $600+ | Premium materials, complex design, custom everything. |
These figures are for construction only. Land and the site costs below are added on top and vary widely by location.
What is included and what is not
It is important to know what a per-square-foot build price does and does not cover:
- Usually included: foundation, framing, roof, windows and doors, mechanical and electrical, insulation, drywall, and interior and exterior finishes.
- Usually not included: the land itself, servicing and utility connections, municipal development charges, permit and design fees, landscaping, and HST.
Compare quotes carefully. A low per-square-foot number often means fewer inclusions. Always confirm exactly what is covered so you are comparing like with like.
The hidden costs of building a home
The build price is only part of the total. Budget for these additional costs, which surprise many first-time builders:
- Land and any demolition of an existing structure
- Servicing and utilities: water, sewer or septic, hydro, and gas connections
- Development charges and municipal fees, which can be significant
- Permits, drawings, and engineering
- Soil, grading, and site conditions such as rock or a high water table
- HST on the build, with possible rebates depending on the situation
Turning a lot into a home?
We guide you from feasibility and budget through permits and the finished build. Let us map out your project.
Talk to ZeybekDo you need a licensed builder in Ontario?
Yes. New homes in Ontario must be built by a builder licensed with the Home Construction Regulatory Authority (HCRA), and new homes are covered by Tarion warranty protection. This protects you as the buyer and sets a standard for the work. When choosing a builder, verify licensing, insurance, and a track record of completed homes, which we cover in our guide on how to choose a contractor in Ontario.
How long does it take to build a house?
Plan on three to six months for design, drawings, and permits, then roughly ten to sixteen months of construction for a typical custom home, longer for large or complex builds. Weather, site conditions, and material lead times all affect the schedule. Our timeline guide explains how to plan realistically.
Should you build or renovate?
Building new gives you exactly the home you want but costs more and takes longer than renovating. If you love your location and the existing structure is sound, a major renovation or an addition often delivers most of the benefit for less. Compare the paths in our whole-home renovation guide and our home addition guide.
Frequently asked questions
How much does it cost per square foot to build a house in Ontario?
Building a custom home in Ontario typically costs $250 to $500 or more per square foot for construction, not including land. Modest builds start near $250, while luxury homes exceed $500 per square foot.
Does the cost to build include land?
No. Per-square-foot build prices cover construction only. Land, servicing, development charges, permits, landscaping, and HST are separate and can add substantially to the total.
Do I need a licensed builder to build a home in Ontario?
Yes. New homes must be built by a builder licensed with the Home Construction Regulatory Authority (HCRA), and they are covered by Tarion warranty protection.
How long does it take to build a custom home?
Expect three to six months for design and permits, then about ten to sixteen months of construction for a typical custom home. Large or complex builds take longer.
Is it cheaper to build or buy a home?
It depends on the market and your goals. Building gives you a fully custom home but usually costs more per square foot than buying existing, once land and site costs are included. Renovating an existing home is often the most economical path.
Zeybek Construction
General contractors, Ontario
Written by the Zeybek team from more than two decades of renovation and construction work across Ontario, from Toronto and the GTA to Kitchener, Waterloo, and beyond. We build kitchens, bathrooms, whole homes, additions, and commercial spaces, and we handle permits and inspections as part of the job.
Related guides
Last updated July 1, 2026. This guide is general information for Ontario homeowners and is not a substitute for a site-specific quote or municipal advice. Costs and rules vary by municipality and project.
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