In 2026, the cost of building a house in Ontario ranges from $325 to $550 per square foot for the structure alone. GTA builds run $420 to $575 per square foot. Soft costs including permit fees, architecture fees, and development charges add another 15 to 30% on top.
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,
The cost to build a custom home in Simcoe County 2026 ranges from $320 to $490 per square foot. Total costs for a 2,500 sq ft home, including land, soft costs, excavation, and permit fees, typically reach $800,000 to $1.25 million.
