How Much Does a New Roof Cost in Ontario in 2026?

Published Ontario contractor guides put most 2026 roof replacements in a broad $8,500–$22,000 band, with architectural shingles at roughly $4.50–$7.50 per square foot and GTA work commonly priced 15–25% above smaller Ontario markets.¹ For budgeting, rounding that to $8,000–$20,000 covers many standard asphalt jobs, but it is not a quote.

Typical 2026 Ontario cost ranges

These planning ranges assume architectural asphalt shingles, normal access and a straightforward tear-off. They are rounded from current Ontario per-square-foot and roof-area guides.² Complex roofs, premium products or widespread rot can push the total beyond the table.

To test your own assumptions before calling contractors, get a personalized estimate with our free roof replacement cost calculator. Treat the result as a comparison baseline, not a substitute for an on-roof inspection.

What drives the final price?

Roof size, pitch and complexity

Pitch increases both surface area and labour. Steep roofs need slower movement, fall-protection setup and sometimes staging. Valleys, hips, dormers, chimneys and skylights add cutting, waste and flashing work. Labour and installation-related costs can represent roughly 40–60% of a reroof, depending on how a contractor categorizes tear-off, disposal, overhead and materials.³

Material choice

Architectural shingles are the usual middle ground: better wind performance and depth than basic three-tab shingles without metal’s upfront premium. Metal roofing generally runs $12–$22 per square foot installed, with system type and custom flashing creating a wide range.²

Tear-off and hidden decking

If removal is not already bundled into the installed rate, allow roughly $1–$2.50 per square foot for tear-off and disposal. Once the deck is exposed, damaged plywood or OSB commonly runs $3–$6 per square foot replaced.¹ Ask for a per-sheet or per-square-foot allowance in writing and require approval before the crew exceeds it.

Location and tax

GTA labour, parking and logistics can place a comparable roof about 15–25% above smaller Ontario cities.¹ Northern or remote work can also rise because of travel and material delivery. Finally, confirm whether the quote includes tax: the Canada Revenue Agency lists Ontario HST at 13%.⁴

How to get quotes you can actually compare

1. Get three written bids. Give each roofer the same requested material and scope so the totals mean something.
2. Insist on product names. “Architectural shingles” is too vague. Record the manufacturer, line, colour, underlayment and ice-and-water membrane.
3. Separate included work from allowances. Confirm tear-off layers, disposal, flashing, vents, drip edge, decking unit rates, permits and HST.
4. Verify the business. Request current liability insurance and WSIB clearance, then read the workmanship and manufacturer warranty terms.
5. Define change orders. The contract should say who approves hidden repairs, at what unit price and how they are documented.

Ways to save without buying a weak roof

• Book before a leak becomes emergency work; water damage removes your ability to schedule calmly.
• Choose a standard architectural line and colour instead of a designer profile.
• Compare identical scopes, not just totals. A low quote may omit tear-off, flashing or disposal.
• Ask whether a shoulder-season date helps, but do not trade away proper installation temperatures or weather protection.
• Keep the roofline simple when replacing skylights or adding ventilation; every penetration adds labour and future leak risk.
• Hold a contingency for decking. If the wood is sound, the money stays in your pocket.