In London, a standard-quality deck renovation runs $9,350 to $21,675, prices below the Canadian average (index 85). A budget version starts around $6,546 and premium work reaches $34,680.
Get 3 quotes for your London deck
Vetted contractors in London respond with fixed-price quotes. Free, no commitment.
See what local contractors actually charge. Free, no commitment, fast response.
Free · No spam · Fast response · You choose who to hire
| Line item | Range | Share |
|---|---|---|
| Structure & Foundation | $1,785 – $3,570 | 25 % |
| Decking Material | $1,488 – $2,975 | 21 % |
| Railings | $595 – $1,488 | 10 % |
| Stairs | $476 – $1,190 | 8 % |
| Lighting | $298 – $893 | 5 % |
| Pergola / Cover | $1,785 – $4,760 | 30 % |
| Permits | $119 – $298 | 2 % |
Included
Not included
| Line item | Range | Share |
|---|---|---|
| Structure & Foundation | $2,550 – $5,100 | 25 % |
| Decking Material | $2,125 – $4,250 | 21 % |
| Railings | $850 – $2,125 | 10 % |
| Stairs | $680 – $1,700 | 8 % |
| Lighting | $425 – $1,275 | 5 % |
| Pergola / Cover | $2,550 – $6,800 | 30 % |
| Permits | $170 – $425 | 2 % |
Included
Not included
| Line item | Range | Share |
|---|---|---|
| Structure & Foundation | $4,080 – $8,160 | 25 % |
| Decking Material | $3,400 – $6,800 | 21 % |
| Railings | $1,360 – $3,400 | 10 % |
| Stairs | $1,088 – $2,720 | 8 % |
| Lighting | $680 – $2,040 | 5 % |
| Pergola / Cover | $4,080 – $10,880 | 30 % |
| Permits | $272 – $680 | 2 % |
Included
Not included
In London, Ontario, a standard-quality deck renovation typically costs between $9,350 and $21,675 in 2026 — prices are below the Canadian average, with a local cost index of 85%. Expect around 1 to 3 weeks of work and a 65–75% return on investment at resale. The extended season (April–November) means contractors are in heavy demand — booking 4–6 weeks ahead during spring is the norm.
London is in southwestern Ontario’s snowbelt — 194 cm annual snowfall is significantly more than Toronto’s 122 cm, which means deck snow loads under OBC are higher than GTA equivalents. Helical piles ($350–$500 each, typically 4–8 per deck) dominate against the local clay-heavy soil. Pressure-treated SPF from Home Depot London and Home Hardware Wortley dominates the budget tier; composite (Trex, TimberTech) is the premium choice. Building permits are required for decks over 24” above grade or larger than 108 sq ft. Permits clear in 10 business days via Development and Compliance Services. Heritage approval applies only to a small number of designated properties in Wortley Village.
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.
Deck projects offer excellent outdoor living value in Canadian summers but material choice dramatically affects longevity and maintenance. Pressure-treated wood is cheapest upfront ($15–25/sq ft installed) but requires annual staining. Composite decking ($30–55/sq ft) costs more but lasts 25–50 years with minimal maintenance. Plan for proper footings below the frost line — in most Canadian cities, that's 4–5 feet deep.
Material choice is the #1 cost driver: cedar ($25–40/sq ft), composite ($30–55/sq ft), or exotic hardwoods like Ipe ($50–80/sq ft). Railings add $50–120 per linear foot. Multi-level decks cost 50–75% more than single-level. Built-in features like benches, planters, and pergolas add $2,000–$10,000.
Pro tip
Build your deck in fall or early spring when contractors are less busy — you can often save 10–15% on labour and have it ready for summer use.
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.
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 deck renovation in London costs between $6,546 (budget) and $34,680 (premium). The average standard cost ranges from $9,350 to $21,675.
Always get three itemized quotes, check provincial licensing (RBQ in Quebec, HCRA in Ontario, equivalent elsewhere), and confirm general liability insurance. Read Google and HomeStars reviews, but weight direct references more heavily — call two past clients. Serious London contractors typically have a 4–8 week backlog; be wary of anyone who can start tomorrow.
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.
A standard deck renovation typically takes 1 to 3 weeks. Premium projects or surprises (structural issues, delivery delays) can extend it. Always get a written schedule from your contractor before signing.
A deck renovation typically returns 65–75% at resale in Canada. The exact figure depends on material choices, the current state of the London housing market, and quality of execution.
Complete guide
Read our complete national guide to deck costs