What a Custom Home Really Costs in Toronto in 2026

Every week someone calls us with the same opening line: “My neighbour said custom homes cost about three hundred a square foot.” Sometimes it’s a number from 2019. Sometimes it’s a number from a TV show filmed in Texas. Either way, the conversation that follows is the most valuable twenty minutes we offer, so let’s have it here, in writing, with real 2026 numbers.

Custom home cost Toronto 2026: The construction number

Quality custom construction in Toronto currently runs $400 to $600 per square foot for the build itself. The spread depends on three things: structure (a walkout basement on a ravine lot costs more than a flat lot in Scarborough), envelope (triple-glazed European windows versus good Canadian double-glazed), and finishes (there is a real difference between a $12,000 and a $90,000 kitchen, and both are defensible choices).

So a 3,500 square foot home, finished basement excluded, lands somewhere between $1.4 million and $2.1 million in construction cost. Luxury work — full-bed stone, elevator, pool — starts around $600 and we’ve seen $900+. Anyone quoting materially below $350 in this market is either excluding half the scope or planning to discover it later, at your expense.

The lines everyone forgets

The construction number is only the headline. Here’s the rest of the ledger, from contracts we’ve actually signed:

• Design and engineering: $60,000–$150,000 for architectural drawings, structural, mechanical and the consultants Toronto increasingly requires (arborist, grading, sometimes geotechnical).
• Permits and fees: building permit fees scale with construction value; add tree permits and securities, road occupancy and utility deposits. Budget $25,000–$60,000.
• Demolition: taking down the existing house, with disconnections and the City’s paperwork: $40,000–$70,000.
• Variances, if needed: a Committee of Adjustment application adds fees, consultants and — the real cost — four to eight months of carry.
• HST: new homes attract HST. Rebate rules exist, thresholds matter, and your accountant should be in this conversation early.
• Landscaping and driveway: the budget orphan. A finished house on a mud lot isn’t finished. $50,000–$150,000 for most properties.
• Contingency: we recommend 7–10% held by you, untouched unless genuinely needed. On our fixed-price contracts it usually comes home unspent — but it lets you sleep.

The honest total for a 3,500 sq ft custom home in Toronto in 2026, excluding land: roughly $1.7 to $2.6 million, all-in.

Where the money is well spent

Spend on what’s hard to change later: structure, envelope, windows, mechanical systems, and ceiling heights. A house that’s framed generously and sealed properly will accept any kitchen you want in fifteen years. The reverse is not true.

Save, if you must, on finishes with honest substitutes: porcelain that reads as marble, engineered oak instead of five-inch solid, a beautiful standard-depth fridge instead of the built-in that costs as much as a small car. Your guests will never know. Your envelope, your kids’ bedrooms in February — they’ll know forever.

The question behind the question

When people ask what a custom home costs, they’re usually really asking: can I trust the number I’m given? Fair. Our suggestion, whoever you build with: insist on a line-item quote against finished drawings, ask which allowances are placeholders, and ask what happens — contractually — when something unexpected appears behind a wall. The builders worth hiring will enjoy answering. The others will change the subject to countertops.

Got a lot, or thinking of buying one? We’ll run a feasibility and budget for your specific property — the real number, before you’re committed. That call costs nothing and has saved our clients more money than any other service we offer.