What Does It Cost to Build in the GTA?
Straight numbers, honestly labeled. Every figure below is an industry-reported estimate range — not a quote, and not a promise. Your lot, scope, finishes and servicing move the number. After design and feasibility, our quotes are fixed-price and itemized, in writing.
Read this first. Construction costs vary enormously by lot, scope and finishes. The ranges below reflect industry reporting for the Toronto/GTA market in 2026. They are starting points for planning — your project gets a fixed, written price after design, never before.
| Project type | Typical estimate range | What moves the number |
|---|---|---|
| Garden suite (detached backyard home) | $280,000–$450,000 | Servicing distance, soil conditions, size, finish level |
| Laneway suite (laneway-fronting home) | $280,000–$450,000 | Same as garden suite; garage demolition/rebuild if applicable |
| In-law / basement suite (within existing home) | $90,000–$180,000 | Separate entrance, egress windows, kitchen/bath scope |
| Multiplex conversion (1 house → 2–4 units) | $150,000–$500,000+ | Structural condition, unit count, services/HVAC separation, ceiling heights |
| Whole-home renovation | Varies widely — consultation required | Size, structural changes, systems replacement, finishes |
| Custom home (teardown & rebuild) | Varies widely — consultation required | Lot conditions, size, architecture, finish level |
What Drives Construction Costs Most
- Servicing. Distance to water, sewer and hydro connections is the single biggest swing factor on accessory suites. A long servicing run can add tens of thousands.
- Structure. In conversions and renovations, what’s behind the drywall decides the budget — foundation condition, framing, and whether the structure supports your plans.
- Scope discipline. Every “while we’re at it” adds cost. Our fixed-price contract draws the line clearly; changes are priced in writing before they happen.
- Finishes. The spread between builder-grade and high-end finishes can double a fit-out budget. We price to the finish level you choose — no surprises.
- Permit timelines. Time is money, especially for investors carrying a property. Industry reporting puts Toronto permitting for accessory suites at roughly 8–20 weeks — we manage the process to keep it moving.
How Our Pricing Works
- Free consultation. We discuss the project and, for investors, review the deal.
- Feasibility. We verify what the lot and the rules allow — and flag budget-killers early.
- Design. Architectural drawings and finish selections, priced as we go.
- Fixed-price quote. Itemized, in writing, before construction. The quote is the price.
Get a Real Number for Your Project.
Estimate ranges only go so far. A free consultation and feasibility review gets you project-specific numbers you can actually plan around. Call (647) 482-5247.