Buying a New Build in Ontario? Don't skip these "Must-Ask" Questions.

In Ontario, buying a new build isn’t just about choosing finishes; it’s about navigating the Tarion warranty system and a rapidly changing regulatory landscape.

As of 2026, there are specific "Ontario-only" factors—like the new mandatory registration rule—that can cost a buyer thousands if they miss them.

Here is a LinkedIn post tailored specifically for the Ontario market.

🏗️ Buying a New Build in Ontario? Don't skip these "Must-Ask" Questions.

In the Ontario market, a "New Build" is more than just a home—it’s a complex legal contract governed by Tarion and the HCRA.

With construction costs and timelines shifting in 2026, asking the right questions isn't just "good advice"—it’s your financial safety net. If you are walking into a sales centre in the GTA or across Ontario, here are the three questions you cannot afford to miss:

1. "Is my purchase registered with Tarion yet?"

Why it matters: As of 2026, Ontario has new rules for freehold homes. To qualify for the maximum deposit coverage (up to $100k for many homes), you need to notify Tarion within 45 days of signing your agreement.

• The Question: "Will you be registering this project immediately, and can you provide the HCRA license number so I can verify your builder record today?"

2. "What are the 'Critical Dates' in the Tarion Addendum?"

Why it matters: Every Ontario new build contract must include a Tarion Addendum. This defines your "Firm Closing Date" and "Outside Closing Date."

• The Question: "Can we review the Statement of Critical Dates together? What is the specific compensation structure if you miss the 'Firm Closing Date'?" (In Ontario, you may be entitled to up to $7,500 in delayed closing compensation).

3. "What is the 'Real' Closing Cost (including Development Charges)?"

Why it matters: In Ontario, many buyers are shocked by "adjustments" on closing day. Development charges can be capped in your contract—if you ask.

• The Question: "Are the municipal development charges and education levies capped in this agreement? If not, what is the historical average for this municipality?"

The Reality: The "shiny" model home is easy to love. The 50-page Agreement of Purchase and Sale is much harder to navigate.

In 2026, the power has shifted back to the buyer. You have the leverage to negotiate caps on closing costs and better terms—but only if you know what to ask.

Have you bought a new build in Ontario recently? What was the biggest "hidden cost" you encountered? 👇