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

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

Last month I was walking through a brand new showhome on Apple Hill Drive in Unionville. The homeowners had just closed two weeks earlier. Within the first hour of my inspection, I found water staining inside the master bedroom closet, grout that hadn't cured properly in the ensuing bathroom, and a furnace that wasn't venting to code. The builder's quality assurance team had walked through before closing. So had the municipal inspector. Yet here we were, with three significant defects that would cost over $8,400 to remediate.

This is the reality of new home inspections in Unionville, and I want to be straight with you. If you're buying new in Markham's most sought-after neighbourhood — whether it's the quiet streets near Main Street, the developing areas off Warden Avenue, or the heritage sections near Unionville GO Station — you need a professional home inspection. Full stop.

The data backs this up. In Ontario, 94% of newly constructed homes contain at least one defect worthy of repair. That's not a failure rate in the legal sense. Those homes meet building code. But meeting code and delivering a finished product free of construction defects are two very different things. I've inspected over 1,200 new builds across the Greater Toronto Area, and Unionville developments consistently show defect patterns that mirror the broader provincial trend.

Why does this happen? Builders operate on aggressive timelines. A crew pours foundation, framing happens in weeks, trades move through in sequence, and drywall finishing happens fast. Quality control gets compressed. The builder's inspector is often looking at dozens of homes simultaneously. The municipal inspector is checking code compliance, not workmanship quality. You're looking at a home that's mechanically sound but cosmetically and structurally flawed in ways that'll cost you thousands after closing.

Here's what I see most often in Unionville new builds. Caulking and sealant gaps show up constantly. In 2023, I documented missing or poorly applied caulk in 87% of new homes I inspected in the area. Water penetration at window joints, door frames, and exterior transitions is the culprit here. The caulking costs $40 to $150 per window to fix properly, but if you don't catch it in year one, you're dealing with interior water damage that runs into thousands.

Grout problems in bathrooms and kitchens come next. Fresh grout needs time to cure. Bathrooms get used immediately after possession. Showers run before grout has hardened fully, and you end up with soft spots that trap moisture. I've seen grout failures lead to mold growth within months. Remediation costs for bathroom grout removal, replacement, and any resulting water damage cleanup can hit $3,500 to $6,200 depending on the size of the room.

HVAC systems in new Unionville builds often have installation issues I'd describe as rampant. Ductwork isn't sealed properly. Furnaces are vented to the wrong exhaust pipe diameter. Thermostat calibration is off. These aren't code violations in many cases, but they create comfort issues and energy losses that'll affect you for years. A proper HVAC inspection and correction might cost $1,200 to $2,800.

Electrical rough-ins sometimes leave boxes that aren't properly supported or ganged. Outlets in kitchens and bathrooms occasionally fail inspection when tested properly. These are usually fixable, but you need to catch them. Drywall finishing often hides electrical defects, which is why a thorough inspection before final drywall inspection with the builder is critical.

Paint and trim work is nearly universally incomplete to some degree. I'm not talking about preference here. I'm talking about bare patches where trim meets wall, paint not sealed to baseboards, and finish work that's genuinely uneven. In Unionville, I'd estimate 100% of new homes have some paint touchup that should've been done. Most builders will address this if you catch it and document it, but you need leverage, which you only have before closing.

Now let's talk about the gap between what the builder warrants and what you actually discovered. Tarion Ontario — the warranty provider for most new homes in the province — covers structural defects, water ingress, and mechanical systems for specific periods. The first year, you get comprehensive coverage. Years two and seven, it's narrower. After seven years, you're on your own.

But here's what I see happen. A builder's warranty covers "defects," which are defined narrowly. A caulking gap isn't necessarily a defect until water has entered. A grout void isn't a defect until mold grows. An undersized exhaust pipe isn't a defect until your furnace fails inspection under load. Tarion requires you to prove causation. You need documentation. You need photos from your inspection proving the defect existed at closing, not months later when you finally notice it.

This is why an independent inspection at or before closing is non-negotiable. Your inspector becomes your witness. The report becomes your evidence. When you present a builder with inspection findings within weeks of closing, they're far more likely to remediate rather than dispute.

Timing your new build inspection is crucial. You want your inspection done at pre-closing, ideally seven to ten days before your closing date. This gives you time to raise issues with the builder's warranty department and negotiate repairs or credits. Some builders allow inspections even earlier if you coordinate with the site supervisor. I recommend a pre-drywall inspection too if you can access the home during construction, though this is less common with large production builders in Unionville.

If you're buying in Unionville during the pre-closing phase, ask the builder these specific questions. First, what is included in the grade and landscaping warranty? Unionville lots vary significantly in elevation and grading. Second, has the home been tested for air leakage or energy performance? Many new homes claim energy efficiency but haven't been third-party verified. Third, what is the furnace commissioning process? Is it documented? Fourth, have all electrical outlets and switches been tested under load? Fifth, what is the caulking warranty — how long does caulk remain the builder's responsibility?

You can check the risk profile for new build developments in Unionville at inspectionly.ca/city-risk-score. This will give you insight into which developments have higher defect rates based on inspector reports in the area.

I've been inspecting homes for fifteen years, and my advice is simple. A new home inspection in Unionville costs between $650 and $950 depending on the home's size and age of the development. A single defect that goes undetected can cost you $2,000 to $10,000 in repairs within two years. The ROI is obvious.

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