Every new home in Ontario is backed by a Tarion warranty. Learn what it covers, how long the protection lasts, and what steps to take if something goes wrong.
Understanding Tarion: Ontario's New Home Warranty Program
When you purchase a pre-construction home in Ontario, your investment is protected by one of the most comprehensive new home warranty programs in North America. Tarion Warranty Corporation is a not-for-profit organization that administers the Ontario New Home Warranties Plan Act, ensuring that every newly built home meets certain quality and construction standards.
For buyers considering communities like The Valleys of Thornhill in Vaughan, understanding your Tarion warranty is an essential part of the purchase process. This coverage exists to give you confidence that your builder stands behind their work and that you have recourse if defects arise after you move in.
What Does the Tarion Warranty Cover?
The Tarion warranty provides multiple layers of protection that apply at different stages after you take possession of your new home. Coverage is divided into three main periods, each addressing different types of issues.
One-Year Warranty
The one-year warranty covers defects in workmanship and materials. This is the broadest coverage period and includes items such as:
- Defects in workmanship and materials (e.g., poorly installed flooring, defective windows)
- Unauthorized substitution of materials specified in the purchase agreement
- Violations of the Ontario Building Code that affect health and safety
- Defects in work and materials in common elements of condominiums
- Water penetration through the basement or foundation
Two-Year Warranty
The two-year warranty extends coverage for specific systems and components that may take longer to reveal problems:
- Water penetration through the building envelope (walls, windows, doors)
- Defects in materials, including windows, doors, and caulking
- Defects in the electrical, plumbing, and heating delivery and distribution systems
- Defects in exterior cladding (siding, stucco, brick veneer)
- Violations of the Ontario Building Code affecting health and safety
Seven-Year Warranty
The seven-year warranty provides the longest protection and focuses on the structural integrity of your home:
- Major structural defects, defined as defects in work or materials that result in the failure of a structural load-bearing element
- Defects that materially and adversely affect the use of the home for habitation
- Any defect in work or materials that results in the building not complying with the Ontario Building Code in a way that constitutes an imminent threat to the health or safety of the occupants
What Is Not Covered by the Tarion Warranty?
While the Tarion warranty is comprehensive, there are certain exclusions that buyers should be aware of. Understanding what falls outside the warranty helps you set realistic expectations.
- Normal wear and tear: Scratches, dents, and gradual deterioration from regular use are not covered.
- Damage caused by the homeowner: Any modifications, alterations, or damage you cause after taking possession is your responsibility.
- Landscaping and grading: While initial grading is covered, ongoing maintenance of your yard and landscaping is not.
- Cosmetic imperfections: Minor cosmetic items that do not affect the function of the home may not meet the threshold for a warranty claim.
- Appliances and fixtures: These are typically covered by their own manufacturer warranties rather than the Tarion warranty.
- Secondary damage: If a covered defect causes damage to your personal belongings, the belongings themselves are not covered.
The Pre-Delivery Inspection (PDI)
Before you take possession of your new home, you will participate in a Pre-Delivery Inspection with your builder. This is one of the most important steps in the warranty process.
During the PDI, you walk through the home with a builder representative and document any visible defects, incomplete work, or items that do not match what was specified in your agreement. A standardized PDI form is used to record all items, and both you and the builder sign off on the list.
Tips for a thorough PDI:
- Bring a flashlight, a level, and a small ball (to check if floors are level)
- Test every outlet, switch, faucet, and appliance
- Open and close every window and door to check for proper operation
- Check all surfaces for scratches, chips, or damage
- Run water in every sink, tub, and shower to check drainage
- Take photographs of everything you note on the form
- Consider hiring a professional home inspector to accompany you
How to File a Warranty Claim
If you discover a defect in your home after taking possession, the process for filing a warranty claim is straightforward but time-sensitive. Tarion provides specific submission windows during which you can file claims.
Warranty Submission Windows
You can submit warranty forms at three key intervals:
- Year-end form: Submitted between the 30th and 120th day before the first anniversary of your possession date
- Second-year form: Submitted between the 30th and 120th day before the second anniversary
- Major structural defect form: Can be submitted at any time during the seven-year warranty period
Missing these windows does not necessarily mean you lose your coverage, but filing within the specified periods ensures the smoothest claims process.
Steps to File a Claim
The claims process follows a structured path designed to resolve issues efficiently:
- Contact your builder first: Tarion requires that you give your builder a reasonable opportunity to address the issue before involving Tarion directly.
- Submit your warranty form online: If the builder does not resolve the issue, submit your claim through Tarion's online portal with detailed descriptions and supporting photographs.
- Conciliation inspection: A Tarion warranty representative may visit your home to assess the claim and determine whether the item is covered.
- Resolution: If the claim is approved, the builder is required to complete the repair within a specified timeframe. If the builder fails to act, Tarion may step in to arrange the repair.
Tarion's Deposit Protection
Beyond warranty coverage for your completed home, Tarion also provides deposit protection for pre-construction purchases. If your builder goes bankrupt or fails to complete your home, your deposit is protected up to certain limits.
For freehold homes (townhomes and detached homes, such as those planned at The Valleys of Thornhill), the deposit protection is up to $100,000. This protection applies from the moment you sign your Agreement of Purchase and Sale and make your deposit.
This deposit protection is one of the reasons that purchasing pre-construction in Ontario carries less risk than in some other jurisdictions. Your financial commitment is safeguarded by a regulated, independent organization.
How Tarion Applies to Pre-Construction in Vaughan
All licensed builders in Ontario, including those building in communities across Vaughan and York Region, are required to be registered with Tarion and to enroll every new home they build in the warranty program before construction begins.
As a buyer, you can verify that your builder is in good standing with Tarion by searching the Tarion Builder Directory online. This directory shows the builder's registration status, their warranty history, and any outstanding claims or issues.
When evaluating builders for a community like The Valleys of Thornhill, checking their Tarion record is a practical step that provides objective data about their track record with past homeowners.
Making the Most of Your Warranty
Your Tarion warranty is a valuable asset, but it works best when you are proactive about documenting issues, meeting submission deadlines, and communicating clearly with your builder. Keep a file of all correspondence, take photographs throughout the process, and do not hesitate to contact Tarion directly if you have questions about your coverage or the claims process.
Understanding your warranty before you sign your purchase agreement puts you in a stronger position as a buyer and helps you get the most value from your investment in a new home.
Have Questions About Pre-Construction?
Matthew Caporiccio can help you understand pricing, deposit structures, and availability at The Valleys of Thornhill and other pre-construction projects across the GTA.



