Canada cost guide
Home Addition Cost in Canada
Estimate room additions, rear extensions, second-storey additions and major expansion planning.
Typical planning rate
$275–$550
per sq ft before local, scope and tax adjustments.
What changes the cost?
The most useful renovation budget is not a single number. It changes with the amount of work, access to the home, trades involved, local labour conditions and the materials you choose.
Foundation and structural design
Zoning and permits
Mechanical system extensions
Architectural and engineering scope
Planning range, not a quote. Use the calculator to decide whether your budget and scope are aligned. Request contractor availability for site-specific quotes.
Major markets
Home Addition cost by city
Choose a major market for local planning context, location-adjusted estimate ranges and contractor coverage status.