Home addition costs vary widely depending on the type of addition, size, materials, and complexity. Here’s a detailed look at common types of additions and their typical price ranges in Toronto for 2026:

Discover why 416 Construction is recognized as one of Toronto’s premier architectural drawing firms, offering expert design, permit-ready plans, engineering coordination, and complete design-build services. Learn how our experienced team transforms ideas into fully approved, buildable projects across Toronto and the GTA.

Choosing between a custom home builder and a production builder is one of the most important decisions when building a new home. While production builders offer standardized designs and faster timelines, custom home builders provide complete design flexibility, personalized layouts, premium finishes, and greater long-term value. Learn which option is right for your lifestyle, budget, and goals.