Detailed cost breakdown for roofing renovation in London, Ontario.
In London, Ontario, a standard-quality roofing renovation typically costs between $8,607 and $17,907 in 2026 — prices are near the Canadian average, with a local cost index of 95%. Expect around 2 to 5 days of work and a 60–70% return on investment at resale. Freeze-thaw events are less extreme but rain is heavier — prioritize gutters, grading, and flashing details to keep water away from the foundation.
Budget Range
$6,023 - $12,534
Average Cost
$8,607 - $17,907
Premium Range
$13,771 - $28,652
| Category | Low Estimate | High Estimate |
|---|---|---|
| Shingles | $1,995 | $3,990 |
| Underlayment | $532 | $997 |
| Flashing | $475 | $1,140 |
| Ventilation | $380 | $855 |
| Gutters | $950 | $2,375 |
| Tear-Off & Disposal | $1,425 | $2,850 |
| Labour | $2,850 | $5,700 |
| Total | $8,607 | $17,907 |
London receives 194 cm of snow annually — among the highest snowfall of any Ontario city of its size — which puts ice-damming squarely at the centre of roof-failure modes here. Ice-and-water shield to at least 3 feet inside the wall plane plus R-60 attic insulation paired with continuous soffit-to-ridge ventilation is the local best-practice. A typical 1,500 sq ft re-roof runs $10,000–$16,000 with IKO Cambridge or Owens Corning Duration shingles at $3.50–$5.50/sq ft installed. Lake-effect snow events from Lake Huron can drop 30+ cm in a single day, which has led several local insurers to require periodic roof inspection certifications on homes older than 25 years.
Roof replacement timing matters in Canada — most roofing contractors are busiest from May to October. Book in late winter for the best pricing and scheduling. Asphalt shingles remain the most popular choice (85% of Canadian homes) with a 20–30 year lifespan. Metal roofing costs 2–3x more upfront but lasts 50+ years and handles snow loads better. Always get a written warranty that covers both materials and workmanship.
Roof pitch (steepness) significantly affects cost — steep roofs (8/12+) require extra safety equipment and time. Multiple layers of old shingles requiring removal add $1,000–$3,000. Skylight additions cost $1,500–$4,000 each. Ice and water shield membrane in valleys and edges adds $500–$1,500 but is essential in Canadian climates.
💡 Pro Tip
Ask your contractor about upgrading to impact-resistant (Class 4) shingles — some home insurance companies offer 10–28% premium discounts for hail-resistant roofing, which can offset the higher material cost over time.
London, Ontario offers renovation costs 15–20% below Toronto, making it one of the best-value markets in the province. The city's mix of Victorian homes in Old North and Wortley Village alongside newer suburban developments provides diverse renovation opportunities. Western University's presence creates steady demand for rental property upgrades. Contractor availability is generally good with 2–4 week lead times.
The City of London requires permits for structural, plumbing, electrical, and HVAC work. Applications are processed through the Development and Compliance Services division. Simple residential permits are issued within 10 business days. London offers a pre-consultation service for complex projects.
London sits in southwestern Ontario's snow belt, receiving 194 cm of snow annually — significantly more than Toronto. This heavy snowfall means roofing must handle greater snow loads, and ice dam prevention is critical. The humid summers require proper ventilation in any renovation, especially basements.
Ontario's heritage layer is the wrinkle most homeowners underestimate. Toronto, Hamilton, London, and Kitchener all maintain Cultural Heritage Districts where street-facing exterior changes need additional review beyond the building permit — typically 4–8 extra weeks, sometimes more for major facade work. The Ontario Heritage Act allows individual properties to be designated by bylaw too, which restricts material choices even on undesignated streets. Separately, new builds and significant additions under 7 years old fall under HCRA / Tarion warranty rules, so a renovation that touches the original-build envelope can trigger warranty implications worth discussing with your contractor and builder.
Ontario homes face humid summers and freeze-thaw cycles that drive moisture into basement walls and through the building envelope. Sub-grade waterproofing, R-60 attic insulation, and ice-and-water shield at every eave are typical priorities. Older Toronto and Hamilton homes in particular benefit from rim-joist air sealing during any major renovation.
Material pricing in Ontario benefits from the province's position as the dominant distribution hub for Canadian-made cabinet and engineered-hardwood manufacturers — Cabico, Aya, Mercier, Lauzon, Mirage, and Preverco all reach the province through short supply chains, which keeps premium cabinet and floor pricing 10–20% below equivalent BC or Atlantic markets. Ontario's 13% HST applies to materials and labour, partially offsetting that advantage. Outside the GTA, contractor rates in Hamilton, London, Kitchener, and Windsor run 10–20% below Toronto on equivalent specifications, which is why homeowners on the GTA periphery often source trades from one city out rather than the city centre.
In 2026, a roofing renovation in London costs between $6,023 (budget) and $28,652 (premium). The average standard cost ranges from $8,607 to $17,907.
The three most common options in Canada: a variable-rate HELOC against your home equity, a fixed-rate renovation loan from your bank (5–10 year terms), or a mortgage refinance if you have substantial equity. For projects under $15,000, a 0% balance-transfer credit card can bridge 12–18 months. Avoid contractor-offered financing — those rates often exceed 12%.
A roofing renovation typically returns 60–70% at resale in Canada. The exact figure depends on material choices, the current state of the London housing market, and quality of execution.
The City of London requires permits for structural, plumbing, electrical, and HVAC work. Applications are processed through the Development and Compliance Services division. Simple residential permits are issued within 10 business days. London offers a pre-consultation service for complex projects.
The most common surprises: code-compliance electrical upgrades ($1,500–$4,000), plumbing issues uncovered when walls are opened, asbestos or lead-paint abatement in older homes, and permit fees not included in the initial quote. Plan for a 15–20% contingency on top of the base budget in London.
📖 Complete guide
Read our complete national guide to roofing costs