Tarion Warranty
The Tarion Warranty protects Ontario new home buyers with coverage for defects, delays, and builder accountability.

September 30, 2025
What is Tarion Warranty?
The Tarion Warranty is Ontario’s mandatory new home warranty program that protects buyers of new construction homes and condos. It provides coverage for construction defects, major structural issues, and delayed closings under the Ontario New Home Warranties Plan Act.
Why Tarion Warranty Matters in Real Estate
The Tarion Warranty matters in real estate because it gives buyers confidence in new builds and protects against costly defects. It ensures builders are accountable for construction quality and timelines.
Example of Tarion Warranty in Action
A new condo owner discovers plumbing defects after moving in. The Tarion Warranty program covers repairs within the warranty period, protecting the buyer from significant costs.
Key Takeaways
- Ontario’s mandatory new home warranty program.
- Protects buyers against defects and delays.
- Ensures builder accountability for quality and timelines.
- Coverage periods vary for different defect types.
- Essential safeguard for buyers of new builds.
Related Terms
- New Home Warranty
- Pre-construction Condo
- Ontario New Home Warranties Plan Act
- Builder Compliance
- Occupancy Period

A rendering of the EverHome project. (The Sher Corporation)

























September residential sales, not seasonally adjusted; the annual comparison uses CREA’s revised figures. Chart:
Annual changes in the unadjusted national MLS® HPI and average sale price. The average is affected by the mix of transactions. Chart:
Seasonally adjusted residential months of inventory by province. Local property types can differ substantially. Chart:
Ontario and B.C. are the two provinces with forecast annual average-price declines in 2026. Chart:
Annual average transaction prices in Canadian dollars. Forecast values are not December price targets. Chart:
Five-year changes in seasonally adjusted composite MLS® HPI benchmarks, September 2021 to September 2026. Chart: 