New Build Home Inspection in Don Mills — Why 94% of New Homes Have Defects

New Build Home Inspection in Don Mills — Why 94% of New Homes Have Defects

Last month I inspected a three-bedroom townhouse on Grenadier Road in Don Mills, a family's first new build purchase. The developer's pre-delivery inspection had signed off on the unit. Within two hours, I'd identified water intrusion around the patio door frame, caulking gaps in four windows, unfinished drywall mudding in the primary bedroom closet, and a furnace that hadn't been properly pressure-tested. The buyers would have walked in blind. That's what I want to talk about today, because the idea that a new home doesn't need inspection is one of the most expensive myths I've encountered in fifteen years as a Registered Home Inspector.

People ask me all the time: why would you inspect a brand-new house? It has a builder's warranty. Everything's new. The municipal inspector already approved it. I understand the logic. But I've spent a decade and a half walking through new builds in Don Mills and across the GTA, and I can tell you with absolute certainty that warranty coverage and actual defects are two very different things. The data backs this up too. Industry studies consistently show that somewhere between 90 and 94 percent of new homes have at least one defect worthy of repair or remediation. Some of those are minor. Many aren't.

Don Mills developments have been booming. You've got everything from the heritage character homes in the neighbourhoods near Don Valley Parkway to the newer townhouse clusters near Eglinton and the more recent condominium projects. Each brings its own set of construction pressures. Builders are moving fast. Crews change. Inspectors at the municipal level are checking for code compliance, not quality. That's not their job. Their job is whether the framing is square and the electrical is safe. A drywall seam that's going to crack in two years? That's not a code issue. But it's your issue.

I want to walk you through what I actually find in Don Mills, because these aren't hypotheticals. Three weeks before the Grenadier Road inspection, I was in a new build on Glendinning Drive. The grading around the foundation was sloping toward the house instead of away from it. Proper correction would have cost the owners around $3,800 to excavate and re-slope. The builder's warranty covers defects, but many builders define grading issues as site-specific conditions, which sit in a legal grey area. I've had that argument more than once.

Another frequent issue I find in Don Mills new builds is incomplete caulking around windows and doors. In a development near Lawrence Avenue, I counted thirty-seven gaps across a single unit. Each one is a potential water entry point, especially when Toronto gets the kind of heavy rain we've seen in recent years. The builders I've worked with in this area vary wildly in their attention to detail. Some are meticulous. Others treat caulking like an afterthought. You can't know which until someone trained looks.

HVAC commissioning is another common gap. I inspected a new townhouse on Donlands Avenue where the furnace had been installed but never properly tested or balanced. The homeowner wouldn't have known until winter, when they discovered uneven heating between floors. That kind of fix costs $1,200 to $1,700 to correct. The HVAC contractor had signed off. The builder had signed off. But it wasn't actually right. A proper pre-delivery inspection catches this before you take possession.

Now, let's talk about what builder warranty actually covers and what it doesn't. Most new homes in Ontario come with Tarion warranty coverage if the builder is registered. Tarion provides what's called a Tarion Homeowners' Warranty Program. It includes seven years of coverage for structural defects, two years for major systems like HVAC and plumbing, and one year for finishes. That sounds comprehensive until you start reading the exclusions. Cosmetic issues, settling that's within tolerances, minor water intrusion that doesn't damage the structure, cracks that are less than 3mm in drywall — these often fall outside the scope of what Tarion will force the builder to fix.

I've had clients call me eighteen months after moving in because water's leaking into their basement after heavy rain. They contact Tarion. Tarion contacts the builder. The builder argues the grading is the homeowner's responsibility. The caulking is weathered, not defective. The drain tile is working as designed. And suddenly you're out $5,600 for your own excavation and remediation, and you're stuck because you're past the year mark where some defects can be claimed. This isn't Tarion's fault. It's the nature of how these warranties work. Gaps exist. I see them all the time.

That's why your own inspection matters. A third-party RHI isn't looking at whether the builder meets the warranty standard. I'm looking at whether the home is actually built properly, whether systems will function reliably, and whether there are issues that will cost you money down the road. Those are different questions entirely. When you find problems before possession, you have leverage. After possession, you don't.

Timing is critical. You want your inspection done after the builder has completed punch-list work but before you take possession and sign off. That window is usually three to seven days before closing. Some builders will resist this. They'll say it's too early or it interferes with their schedule. Push back. It's your right, and it's your money. I've had builders tell me I need to wait until after the pre-delivery inspection. I don't. I schedule around their punch-list work. You need independent eyes on that unit before your signature is on anything.

If you're buying in Don Mills, you can check the risk profile and historical data for your specific area. Visit inspectionly.ca/city-risk-score to see how your neighbourhood has performed and what common issues come up in your postal code. That information shapes what I'm looking for when I walk through a property.

When you're talking to the builder, ask specific questions. What's been your defect rate over the past two years? Can you show me examples of punch-list work from similar units? Who's responsible if grading causes water intrusion after I take possession? What's your timeline for responding to warranty claims? Do you use sub-contractors for windows and caulking, and what's your quality control process? How is the furnace pressure-tested before the home is occupied? These aren't confrontational questions. They're professional questions that any builder worth hiring should answer clearly.

The bottom line is this: a new home is an investment, and you wouldn't buy a new car without getting it inspected by a mechanic. Your home deserves the same level of scrutiny. In Don Mills, where prices are substantial and the developments are diverse, that scrutiny pays for itself many times over.

Book an inspection at inspectionly.ca/book-an-inspection or call 647-839-9090