The Complete Guide to Door Replacement in Canada

Door replacement costs in Canada range from $700 for a basic interior door installation in Ontario to $4,500 for custom-sized sliding patio doors in British Columbia, with the majority of projects falling between $1,500 and $3,000 depending on door type, installation complexity, and provincial factors.

The data reveals significant cost variations driven by three primary factors: door type and complexity, installation requirements, and provincial regulatory differences. Sliding patio doors represent the highest-cost category, with standard two-panel installations ranging from $2,200 in Ontario to $2,400 in British Columbia. Custom configurations push costs higher — three or four-panel sliding doors in Ontario reach $3,000 to $5,000, while custom-sized units can hit $4,500.

Entry door installations with sidelights cost $3,900 in Ontario and $4,000 in British Columbia, showing remarkable consistency between provinces. However, standard exterior door installations without sidelights show more variation: $1,000 to $2,500 in British Columbia versus $1,595 for comparable vinyl options in Ontario. This gap reflects British Columbia's broader contractor pricing ranges and the province's diverse housing stock requiring different installation approaches.

Interior door replacements present the most affordable option, with Ontario contractors charging $700 per door for standard installations. British Columbia prices range more widely from $200 to $900 per door, reflecting the varied complexity of retrofitting doors into the province's mix of older homes and newer construction.

Installation Methods and Cost Drivers

The installation approach significantly impacts total project costs. Retrofit installations — fitting new doors into existing, healthy frames — cost $800 to $1,500 in British Columbia, representing the most cost-effective approach when frame conditions permit. Full frame replacement projects, necessary when addressing rot or upgrading for energy efficiency, increase costs to $1,500 to $3,000 in the same province.

Structural modifications create the highest cost category outside of premium door products. Converting windows to sliding doors or widening openings in British Columbia ranges from $2,500 to $6,000, reflecting the complexity of modifying load-bearing elements and ensuring code compliance.

Labour rates vary between provinces and urban centers. British Columbia urban contractors charge $80 to $120 per hour for installation work, with this rate applying to the labour portion of any door project. The data shows that labour typically represents 30-40% of total project costs for standard installations, but can approach 60% for complex retrofit work in challenging existing conditions.

Garage door installations present a specialized category with distinct cost structures. Standard residential garage doors in British Columbia range from $1,500 to $4,000 installed, with basic steel insulated doors at the lower end and advanced automatic systems at the premium level. Installation labour alone ranges from $300 to $600 for standard doors, increasing to $800 for complex carriage house or advanced automatic systems.

Provincial Regulatory Requirements

Ontario's regulatory framework requires compliance with the Ontario Building Code (OBC) for door installations, particularly when structural modifications are involved. The Electrical Safety Authority (ESA) oversees electrical connections for automatic garage doors and motorized systems. Door replacements that alter structural openings require building permits and inspections, adding $200 to $800 to project costs depending on municipal requirements. The Workplace Safety and Insurance Board (WSIB) coverage requirements affect contractor pricing, as does compliance with Ontario's Construction Act lien provisions.

British Columbia operates under the BC Building Code, with Technical Safety BC (TSBC) handling electrical and gas safety aspects. WorkSafeBC requirements influence contractor pricing structures. The province's Builders Lien Act affects payment scheduling and contractor risk management. British Columbia's seismic requirements add complexity to door installations in some regions, particularly for large sliding patio doors that can affect structural integrity.

Climate factors significantly influence door selection and installation requirements. British Columbia's coastal moisture conditions require careful attention to weatherproofing and drainage, particularly for sliding patio doors. The province's rainscreen wall assembly requirements affect exterior door installations in newer construction. Ontario's deep frost lines (4+ feet) and freeze-thaw cycles require robust threshold and weatherstripping systems, adding to material costs.

Budget Planning and Project Timing

Homeowners should budget 15-25% above quoted prices for unforeseen complications, particularly in homes built before 1980 where frame modifications are more likely. Spring and summer installations typically cost 10-15% more due to higher demand, while fall and winter projects may qualify for contractor discounts but face weather-related scheduling delays.

For standard interior door replacements, budget $700 to $900 per door including materials and installation. Sliding patio doors require $2,200 to $2,800 for standard two-panel units, with custom configurations reaching $4,000 to $5,000. Entry doors with sidelights consistently cost $3,900 to $4,000 across both provinces.

Garage door projects should include motor installation costs ($350 to $700 for equipment and labour) and potential spring replacement requirements ($280 for labour). Factor in $200 to $600 for quality garage door openers, with installation adding $150 to $300 in labour costs.

The most cost-effective approach involves timing projects during contractor slow periods (November through February), choosing standard sizes to avoid custom manufacturing premiums, and addressing multiple doors simultaneously to achieve labour efficiencies. Homeowners should obtain detailed quotes specifying installation method, permit requirements, and warranty coverage before proceeding with any door replacement project.