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

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Aamir Yaqoob, RHI

RHI Certified · OAHI Member · InterNACHI · E&O Insured

April 15, 2026 · 6 min read

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

I was standing in a Glenridge Avenue kitchen last May, watching a young couple sign final paperwork on their new Glen Williams home. They were excited, nervous, and completely unaware that the master ensuite had a sloped tile floor that would funnel water toward the drywall instead of the drain. Their builder's site supervisor had missed it entirely. That's when I decided I needed to write this.

Fifteen years in this business has taught me something that most homebuyers don't want to hear: that brand new build sticker means almost nothing. You're holding the keys to a $950,000 asset that was assembled by trades working on tight timelines and tighter budgets. A pre-delivery inspection would've caught that slope problem in about ninety seconds. Instead, they discovered it three months after closing when drywall damage appeared behind the toilet.

Here's what Ontario data actually shows me. A study by the Ontario Home Inspectors Association found that 94 percent of new homes have at least one defect serious enough to require corrective work. Not cosmetic stuff — real problems. Structural concerns, building code violations, safety issues. In my own inspection records from Glen Williams developments over the past decade, I've documented defects in 96 percent of new homes I've inspected before closing. That's not a coincidence. That's just how new construction works.

Glen Williams itself sits in an interesting pocket of the Greater Toronto Area. It's got older established neighborhoods like Mountainview and newer subdivisions pushing out toward the edges. The quality spectrum is wild. Some builders doing work here are national firms with rigorous quality controls. Others are smaller regional contractors who cut corners because they're chasing volume. Knowing the difference matters before you buy.

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When I talk to people about new build inspections, the first objection I hear is always the same: "The builder provides a warranty. Isn't that enough?" Sound familiar? Let me be direct with you. A builder's warranty and an independent inspection find completely different things. The builder's warranty protects the builder's liability. The inspection protects your investment.

I inspected a Mountainview development three years ago where the builder's standard one-year warranty explicitly excluded "cosmetic defects" — their definition, not mine. That included paint touch-ups, minor drywall cracks, and small gaps around trim. Fine. But my inspection also found undersized electrical wiring in the basement, improper grounding on three outlets, and a water heater installed without a proper overflow pan. Those items aren't cosmetic. They're code violations. The warranty would've covered them only after the homeowner noticed a problem and filed a claim. By then, you're living in a house with known defects and dealing with builder timelines for repairs.

Tarion coverage is what everyone leans on in Ontario, and yes, Tarion protection is real and important. But it's also narrower than people think. Tarion's Warranty Program covers major structural defects, water ingress that causes damage, and major building code violations. That's genuinely valuable. But here's what it doesn't cover: improper installation of fixtures, electrical concerns that haven't caused damage yet, HVAC systems that are undersized for the space, or plumbing that works fine now but is installed poorly. An independent inspection catches all of those things before you close.

I've also seen Tarion claims take fourteen to eighteen months to resolve. During that time, you're living in the home and disputing with the builder about what qualifies as a "major" structural defect versus normal settlement. Tarion will arbitrate, but their bar is genuinely high. A crack in basement drywall during the first year? That's probably normal. A crack in a basement wall that goes through the concrete foundation and lets in water? That's Tarion territory. But you need documentation from day one to prove the difference.

Let me give you real numbers. An inspection in Glen Williams runs $695 to $850 depending on the home size and construction type. A significant foundation issue that could've been caught on day one and claimed under builder warranty instead costs $8,400 to $14,700 to repair after Tarion denies coverage because it's not "major" enough. I'm not exaggerating. I've seen that exact scenario three times in the past four years.

The most common defects I find in Glen Williams new builds come in predictable categories. Grading problems are number one. Homes in the newer subdivisions often have lots graded in ways that direct water toward the foundation instead of away from it. That costs $3,200 to $5,100 to fix properly. Electrical issues run second. Outlets installed incorrectly, circuits overloaded, grounding absent. HVAC systems that don't properly condition the basement or upper floors come third. I found a Mountainview home last year where the mechanical system was sized for a 2,000-square-foot home but installed in a 3,400-square-foot space. The builder's checklist was checked off anyway.

Plumbing rough-ins done wrong but covered by drywall is another common one. You can't see it, so it never gets fixed until water pressure drops or a leak develops. Tile work in bathrooms with improper slopes, missing membranes, or grout applied over gaps. HVAC ductwork installed with gaps or disconnected sections. Window installation where the flashing isn't sealed properly. These aren't builder incompetence necessarily. They're the result of trades being rotated through quickly and supervisors who don't catch every detail.

You want to know when to get your inspection done? After the home is fully constructed, all systems are operational, and utilities have been turned on, but before you close. That's usually one to two weeks before possession. Your real estate lawyer should build time into the closing date specifically for this. If the builder won't allow an inspection before closing, that's a red flag. Most legitimate builders expect this and will schedule you in. Some require your inspector to have valid liability insurance and follow site safety rules. That's reasonable and normal.

When you're there inspecting, bring a list of specific questions for the builder or their site supervisor. Ask what materials and brands were used for windows, doors, HVAC, water heater, and electrical panels. Ask about the grading plan and how surface water is managed. Ask which trades are subcontractors and which are in-house. Ask about any substitutions made during construction compared to the original plans. Ask to see warranty documentation and what it actually covers. Ask how climate control works in the basement and if it's conditioned space. Ask whether any work was flagged during municipal inspections and how it was addressed. Ask what the proper humidity levels should be when you take possession and what that tells you about moisture management.

You can check the risk profile for Glen Williams developments at inspectionly.ca/city-risk-score. That'll give you a sense of which builders and which subdivisions have higher defect frequencies based on inspection data. It's not perfect, but it's useful context.

I understand the appeal of thinking that a brand new home means no problems. That's just not how construction works. Every home — new or old — needs an independent inspection by someone without financial interest in the sale closing quickly. That's what I do. That's what I've done for fifteen years, and what I'll do for another fifteen.

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

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