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

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

Last month I walked into a brand new townhouse on Simcoe Street in Cannington. The family had closed three weeks earlier. Within the first two hours, I'd documented a cracked exterior foundation seal, misaligned interior doors, incomplete caulking around the master ensuite, and a furnace that wasn't pulling air properly from the fresh air intake. The builder's completion inspection had signed off on everything.

This is what I do, and this is what I see in nearly every new build in Cannington.

I've been inspecting homes for fifteen years. I've watched the Durham Region grow. I've watched builders push timelines, and I've watched homeowners discover costly surprises six months after they've moved in. The data is clear: Ontario new builds carry serious defects at a rate that would shock most people. According to warranty claim data and inspection records across the province, 94 percent of new homes have at least one defect that requires remediation. In Cannington specifically, I'm seeing defect rates hold steady in that range, with certain builders clustering around specific problem areas.

Here's what surprises homeowners most: the builder's warranty inspector and a third-party RHI often find completely different things. That gap matters. It matters in ways that affect your bank account, your sleep, and how long you stay in the home.

Why New Builds Need Independent Inspection

You'd think a brand new home wouldn't need an inspection. It's got a warranty. It's supposed to be built to code. The builder's sent a trades inspector through before you got the keys.

That logic breaks down fast once you understand the incentive structure. A builder's completion inspector works for the builder. They're motivated to get the home closed and keys handed over. They're not looking at the home as if they're about to buy it themselves. I've walked behind completion inspectors and found defects in rooms they literally didn't enter. That sounds harsh, but it's routine.

An independent RHI has no stake in whether you buy or don't buy. My job is to tell you what's actually wrong and what it costs to fix. In Cannington, I'm seeing builders across multiple developments miss water management details, HVAC balancing, and grading issues that cost $8,000 to $15,000 to remediate after the fact.

Tarion is Ontario's mandatory new home warranty corporation. Every new home in the province comes with Tarion coverage. But Tarion isn't a guarantee. It's a claims process, and it has limits. I'll walk you through that gap later, but here's the headline: Tarion won't cover cosmetic defects, and they won't cover defects caused by what they call "normal settlement" or "normal wear." That definition is much broader than homeowners think.

What We're Finding in Cannington

Cannington's newer subdivisions - places like Woodlawn Estates, the areas around Highway 7 and Mississauga Street, and developments along Old Simcoe - all show patterns. When I inspect twenty homes in the same subdivision built by the same builder within a two-year window, I see the same defects repeated across multiple units. That tells me the problem isn't random. It's systemic.

The most common issues I document in Cannington new builds are these. First is water intrusion at the foundation level. I'm seeing improper grading on about 35 percent of the homes I inspect. The lot slopes toward the foundation instead of away from it, or the gravel isn't pitched correctly at the perimeter. In Cannington's clay soils and our regional water table, that becomes a basement moisture problem within eighteen months. I've measured water ingress in basements that were bone dry at closing.

Second is HVAC system imbalance. The furnace works. The system runs. But bedrooms on the second floor stay cold while the main floor overheats. This comes from ductwork that wasn't balanced by the mechanical contractor before closing. The builder passes their checklist, but the homeowner spends the first winter adjusting vents and calling for service. I've documented this in at least 40 percent of the homes I've inspected in Cannington over the past three years.

Third is exterior caulking and seal gaps. Windows, door frames, areas where different building materials meet - these gaps are left incomplete or caulked with the wrong material. On Simcoe Street last month, the front entrance had gaps around the frame large enough to slip a pencil into. The builder's checklist noted "caulking complete." It wasn't.

Fourth is interior door alignment and latching issues. Doors don't close properly, or they're installed square to the frame but the frame itself is out of plumb. This isn't catastrophic, but it's frustrating and it signals that rough framing tolerances weren't caught during the drywall phase.

Fifth, and this is less visible, is incomplete or incorrect fresh air intake connections on furnaces. Building code requires fresh air for combustion. I'm finding systems where the fresh air duct is disconnected, capped off, or routed incorrectly. In a tight new home, this creates negative pressure and draws air from places you don't want it.

Tarion Coverage and the Gap

Tarion provides three levels of warranty. The first year covers everything except normal settlement and cosmetic defects. Years two through seven cover structural defects. Years eight through ten cover the envelope - basically, the roof and foundation. The coverage sounds broad until you start filing claims.

Tarion defines "cosmetic" widely. A gap in caulking isn't structural, so it's cosmetic. The builder should fix it as a defect, and Tarion usually agrees with that. But if the builder refuses and you want to claim it through Tarion, they'll likely deny it. You'll have to take the builder to Small Claims Court or Tribunal. That costs $500 to $1,500 in fees before you've even hired a lawyer.

Water intrusion is structural, so Tarion covers it. But they won't cover water seeping in during construction or due to grading issues that existed at closing but weren't visible. Once you've closed, grading defects become your problem. They're not the builder's anymore, and they're not Tarion's. I've had homeowners spend $12,000 on foundation waterproofing and remedial grading only to learn Tarion won't touch it because the grading was faulty on day one.

Here's what I tell every client: an independent inspection at closing creates a paper trail that protects you. It documents the condition of the home as built, before you've signed anything you can't undo. If you close without that documentation and find a problem two months later, the burden of proof shifts to you. You have to prove the defect existed at closing. That's hard to do without a contemporaneous inspection.

Timing Your Inspection

The best time for a new build inspection is what I call the "before closing" window. This typically means forty-eight to seventy-two hours before the closing date. At this point, you have keys (or keys are held at the lawyer's office), and you can access the home. The builder still has legal responsibility for the property.

Some inspectors will tell you to do a "pre-delivery inspection" earlier, when the home is nearly complete but before you've taken possession. That's useful, but it's not a substitute for a final inspection three days before closing. Things change. Trades move around. Equipment gets installed or removed.

I always recommend both. A pre-delivery walkthrough when the home is 95 percent complete gives you time to flag major issues to the builder. Then a final inspection within seventy-two hours of closing gives you the true condition just before you own it. If you find defects in that final inspection, you have leverage. The builder wants to close. They want your money and the property off their books. Defects documented that close to closing often get remediated quickly because the builder wants to avoid Tarion claims and negative reviews.

Don't close without documentation. Don't close on a Friday if a defect is found - you won't get a response from the builder until Monday, and you might end up closing anyway just to keep the process moving. I've seen that happen, and it never goes well.

Real Findings from Cannington Developments

I'm going to be specific because specificity matters when you're choosing whether to hire an inspector. Last year I inspected four homes in a single Cannington subdivision built by one major builder. In home one, the basement window wells were filled with construction debris and water. In home two, the same issue. In home three, I found that the sump pump discharge line was routed to daylight but the grading sloped back toward the foundation - the discharge water was flowing back into the lot. In home four, same problem.

The builder's completion inspector had signed off on all four. I reported all four defects. The builder remediated three of them under warranty claim pressure. The fourth homeowner is still working on it eighteen months later because Tarion deemed the grading issue a "site condition" rather than a defect.

Another example: I inspected a new home on Old Simcoe Road in August. The furnace was installed but the ductwork was incomplete. The cold air return from the upstairs bedrooms was stubbed out - literally just open holes in the floor. The builder said they'd finish it after closing. The homeowner closed anyway. Guess what? The ductwork never got finished. The homeowner spent $4,287 hiring a mechanical contractor to complete the work.

In another development near Highway 7, I found that vinyl siding was installed with fasteners that were too tight. The siding was buckling because the installer hadn't left space for thermal movement. On a sunny day, vinyl expands. If it's nailed too tight, it warps. That homeowner is dealing with cosmetic distortion on the south side of the house. Tarion won't touch it. The builder says it's cosmetic. Small Claims Court would cost more than fixing it yourself.

These aren't unusual situations. They're the norm. They're what I document in Cannington multiple times a month.

Questions to Ask the Builder

If you're buying new in Cannington, you should ask the builder these questions before closing. They'll probably give you yes-or-no answers, but push for specifics.

Has the fresh air intake for the furnace been connected and tested? Ask them to show you the ductwork. Ask them to show you a commissioning form from the mechanical contractor. If they can't produce it, it wasn't done. That's a $600 fix after closing.

Has the exterior grading been inspected by the builder's grading contractor? Ask to see the grading certificate or report. If they say grading "looks fine," that's not good enough. Ask for documentation. Get a survey done if you're concerned.

Have all windows and doors been tested for air and water tightness? Builders don't always do this. They install them and assume they work. ASTM has testing protocols for windows and doors. Ask if the builder performed that testing.

Have all interior doors and