How Much Does a New Roof Cost in Ontario? (2026 Pricing Guide)

If you're starting to research a roof replacement, cost is almost always the first question — and understandably so, since it's one of the more significant home investments most homeowners make. Roofing prices vary more than people expect, based on materials, roof size, complexity, and even the season you book the job. Here's a realistic breakdown to help you budget and know what questions to ask when you get quotes.

The Short Answer

For a typical single-family home in the Greater Toronto Area, a full asphalt shingle roof replacement generally falls in the range of $8,000–$18,000+, depending on the size and complexity of the roof. Larger homes, steep or multi-level rooflines, and premium materials push costs toward the higher end — or beyond it.

That range is a starting point, not a quote. The only way to get an accurate number for your specific home is a proper measurement and inspection, but understanding what drives the price will help you make sense of any quote you receive.

What Actually Drives the Cost

• ▪ Roof size (square footage). Roofers typically price by the "square" — a roofing square equals 100 square feet of roof surface. A small bungalow might be 15–20 squares, while a larger two-storey home can easily be 30–40+ squares. This is usually the single biggest factor in your final price.
• ▪ Roof pitch and complexity. A steep roof, or one with lots of valleys, dormers, chimneys, and skylights, takes longer to install safely and requires more materials for flashing and cutting. Simple, low-slope roofs are the most economical to work on; complex, multi-angle roofs cost more per square foot even at the same total size.
• ▪ Material choice. Standard asphalt (3-tab or architectural) shingles are the most budget-friendly option and what most homes in Ontario use. Metal roofing, while considerably more expensive upfront, can last 40–70 years and is increasingly popular for its durability against Canadian winters. Premium designer shingles sit somewhere in between.
• ▪ Tear-off and disposal. If your existing roof needs to be fully removed (rather than shingled over, which most contractors don't recommend), that adds labor and disposal costs — especially if there are multiple existing layers to remove.
• ▪ Decking repair. If your inspection reveals rotted or damaged plywood decking underneath the old shingles, replacing those sections adds to the cost, but skipping this step when it's needed leads to problems down the road.
• ▪ Permits and code requirements. Depending on your municipality, a roof replacement may require a permit, and code requirements around ventilation, ice-and-water shield coverage, or insulation upgrades can add to the total.

A Rough Price-Range Breakdown by Material

Tips to Get an Accurate, Fair Quote

1. Get an in-person inspection, not just a phone estimate — accurate pricing depends on real measurements and a look at your attic/decking condition
2. Ask what's included — tear-off, disposal, new flashing, ventilation upgrades, and warranty terms can vary a lot between quotes that otherwise look similar
3. Compare warranty coverage, not just price — a cheaper quote with a weaker warranty can cost more over the life of the roof
4. Beware of unusually low quotes — they often mean corners are being cut on materials, underlayment, or proper flashing work, which shows up as leaks a few years later

Get an Exact Number for Your Home

Every roof is different, and the only way to know your real cost is a proper on-site look. It only takes a few minutes, and you'll walk away with a clear, itemized price — no guesswork.