For most Ontario homeowners in 2026, renovation costs $100–$300 per square foot and works well when the structure is sound. A rebuild runs $275–$450 per square foot but delivers a fully code-compliant, energy-efficient home.
Building permit cost in Ontario ranges from $1,800 to $8,000+ for a typical residential project in 2026, depending on your municipality and project scope. Toronto charges a base fee plus $16.60 per square metre of new floor area.
Ontario zoning laws are legally binding municipal bylaws under the Planning Act that dictate how every parcel of land in the province can be used, what can be built on it, and exactly where on the lot a structure must sit.
The building permit process in Ontario involves six key steps: confirm zoning compliance, prepare drawings with a BCIN-qualified designer, assemble your application documents, submit to your municipal building department,
A net zero home in Ontario produces as much energy as it consumes annually, using high-performance insulation, triple-pane windows, a heat pump, and rooftop solar. New builds carry a 5–10% cost premium over standard construction.
A pre-construction checklist in Ontario is a sequential list of approvals, studies, and site-readiness tasks completed before construction legally begins. The 12 steps span zoning verification, building permits, HCRA licensing, Tarion enrolment,
A basement apartment in Toronto costs $50,000–$80,000 to build and earns $1,400–$2,400/month. A garden suite runs $200,000–$400,000 but generates $2,500–$3,500/month or more.
Custom home builders in Ontario work through a timeline of 12 to 20 months from design start to occupancy. The process begins with lot verification and zoning review, advances through design, permitting, and active construction phases covering framing,
The best Mississauga neighbourhoods for custom homes in 2026 are Lorne Park, Mineola, Gordon Woods, Rattray Marsh, and Lakeview. Custom homes in Mississauga range from $400 to $1,000+ per square foot to build, with land prices from $1.2M to $4M+ depending on the area.
A 2nd storey addition cost in Ontario ranges from $375 to $550 per square foot in 2026, with Toronto and GTA projects often reaching $400–$700+. For a standard 800–1,000 sq ft second storey, total costs including permits and engineering typically fall between $280,000 and $550,000.
