When does your home’s Tarion warranty start?

Your warranty starts on the date you take possession of your new home am it indicated on the Certificate of Completion of Possession and Possession/Warranty Certificate as provided by ArchStone.
The law requires that your home is provided with Tarion warranty by ArchStone.

What is Tarion?

Tarion is a not-for-profit consumer protection organization that administers Ontario’s home warranty program.

Tarion’s Role

Tarion’s role is to ensure that buyers of newly-built homes in Ontario receive the coverage they are entitled to under their builder’s warranty. Tarion’s responsibilities include:
  • Administer the MyHome online portal to manage warranty and report defects
  • Educate homeowners about warranty rights and responsibilities
  • Assess and determine if warranty claims are valid
  • Manage a guarantee compensation fund to pay homeowners for warranty claims
  • Facilitate the fair resolution of disputes between homeowners and builders
  • Resolve warranty claims directly with homeowners via a third party
  • Manage a guarantee fund to protect you as the home buyer
  • Protect homeowners when builders fail to fulfill their warranty obligation

Deposit Protection

The deposit you provide to ArchStone is protected up 10% of purchase price to a maximum of $100,000 if:
  • Fundamental breaches of the purchase agreement
  • You exercise your right to terminate the agreement
  • Builder declares bankruptcy
This protection includes the money you put down towards upgrades and other extras.

Work & Materials Warranty

The warranty on work and materials lasts for seven years from the date you take possession of your new home, and provides up to a maximum of $300,000 in coverage. The warranty is divided into three coverages as follows:

The 1-Year Warranty

  • Requires that your home is built properly and free from defects in materials
  • Ensures your home is fit for habitation
  • Protects against Ontario Building Code violations

The 2-year Warranty

  • Protects against water penetration through the basement or foundation walls
  • Protects against defects in materials, including windows, doors and caulking, or defects in work that result in water penetration into the building envelope
  • Covers defects in work or materials in the electrical, plumbing, and heating delivery and distribution systems
  • Covers defects in work or materials that result in the detachment, displacement, or deterioration of exterior cladding (such as brick work, aluminum, or vinyl siding)
  • Protects against Ontario Building Code violations that affect health and safety

The 7-year Warranty

Provides coverage against major structural defects. These include:
  • Defects in work or materials that affect a structural load- bearing element of the home, resulting in a structural failure, or that could materially and adversely compromise the home’s structural integrity
  • Defects in work or materials that materially and adversely affect the use of a significant portion of the home

Delayed Closing Coverage

  • ArchStone guarantees that your home will be ready for you to move into either by a date specified in the purchase agreement or by the date that has been properly extended if circumstances occur that delay the home’s completion, to which you and ArchStone have agreed upon.
  • The Statement of Critical Dates in the Addendum to your agreement contains all of the information about your closing date and any extensions that are applicable.
  • If your home’s closing or occupancy date is delayed beyond the allowable limits you may be able to claim compensation of $150 per day up to a maximum of $7,500

Coverage Limits

For all purchase agreements the warranty limits are as follows:

  • The maximum statutory warranty coverage available for freehold homes is $300,000
  • There is a maximum of $50,000 for warranted damage caused by environmentally harmful substances or hazards, including mould, for freehold homes

At ArchStone we specialize in pre-construction and custom homes, prioritizing transparency, collaboration, and a pragmatic approach to creating dream homes within clients’ budgets. We pay meticulous attention to detail, maintain clear communication, and value relationships to provide a seamless and stress-free building experience.


We strive to optimize our building materials’ quality, reduce costs for enhanced value, and adhere to rigorous internal quality assurance protocols and external inspections, ensuring the highest quality standards for every new home we construct.


We uphold the highest integrity in our interactions with customers, associates, and trade partners, committing to ethical decisions and constantly striving to enhance the quality of our homes.


Our commitment lies in delivering exceptional value to homeowners through the construction of superior quality homes.


As a cornerstone value of our company, transparency fosters trust, promotes informed decision-making, and reduces risk for both home builders and homebuyers. Our commitment to openness and clear communication ensures accountability and elevates the quality of our work.


We prioritize family and well-being, both within our communities and personally, by focusing on what matters most and diligently minimizing distractions that detract from our primary objectives.