I walked into the basement of a 1989 colonial on London Road last Tuesday and immediately knew we ha

I walked into the basement of a 1989 colonial on London Road last Tuesday and immediately knew we had a problem. The musty smell hit me first, then I spotted the dark stains creeping up the foundation wall behind the water heater. The seller had clearly tried to paint over the worst of it, but you can't hide chronic moisture issues with a coat of Benjamin Moore. What I found next made my stomach drop – the main beam supporting the entire first floor was sagging a good two inches in the middle.

Sound familiar? In 15 years of inspecting homes across Ontario, I've seen this exact scenario play out dozens of times in Newmarket. Buyers get caught up in the bidding wars – and trust me, with properties moving in just 20 days on average, there's plenty of pressure – but they forget to look past the fresh staging and updated kitchen backsplash.

Here's what I find most concerning about Newmarket's current market. You've got 198 active listings with an average price of $1,155,205, and most of these homes date back to the 1980s and 1990s. That puts them right in the sweet spot for major system failures. I'm talking about furnaces that are gasping their last breath, electrical panels that belong in a museum, and roofing that's been patched so many times it looks like a quilt.

Just last week I inspected three homes on Eagle Street. Different builders, different years, same problems. The first house had knob-and-tube wiring hidden behind drywall – a $12,000 rewiring job waiting to happen. The second had a furnace from 1987 that was leaking carbon monoxide into the basement. The third looked perfect until I climbed into the attic and found raccoon damage that had compromised half the insulation.

Buyers always underestimate what these repairs actually cost. They hear "needs a new roof" and think maybe $8,000. Try $18,500 for a typical Newmarket home. Foundation repairs? You're looking at anywhere from $6,200 for minor crack sealing to $35,000 if you need underpinning. And don't get me started on HVAC systems – a full furnace and air conditioning replacement will set you back $9,400 minimum, assuming you don't need new ductwork.

The Stonehaven and Bristol Road areas are particularly tricky. Beautiful mature trees, established neighborhoods, homes that photograph like a dream. But those same mature trees have root systems that've been pushing against foundation walls for decades. I can't tell you how many times I've found structural issues in these areas that sellers either didn't know about or chose not to mention.

What really keeps me up at night is the electrical situation in so many of these 1980s builds. I'll open a panel and find federal Pacific breakers that should've been replaced years ago, or aluminum wiring that's been "upgraded" with the wrong connectors. One house on Timothy Street last month looked perfect from the street – updated siding, new windows, gorgeous landscaping. Inside the panel, I found burn marks around three different breakers and wiring that made my hair stand on end.

You'd think after 15 years I'd get used to seeing buyers make the same mistakes, but it still frustrates me. They'll spend hours researching the neighborhood, school ratings, and comparable sales, then skip the inspection to make their offer more competitive. In a market where you're dropping over a million dollars, would you really want to roll the dice on a 40-year-old house?

The risk score for Newmarket sits at 56 out of 100, which means moderate risk, but that number doesn't tell the whole story. It doesn't account for the fact that many of these homes have been flipped or partially renovated without proper permits. I can spot these from a mile away – new laminate flooring over old subfloor damage, fresh paint over water stains, updated fixtures connected to outdated wiring.

Here's something that'll surprise you. The most expensive problems I find aren't always the obvious ones. Sure, a leaking roof or cracked foundation will cost you, but what about the house on Yonge Street where the previous owner installed a beautiful ensuite bathroom without upgrading the drain stack? The backup damage cost the new owners $23,000 in repairs and remediation.

I've seen too many families move into their dream home only to discover they need another $40,000 in immediate repairs. The excitement of homeownership turns into stress about where they're going to find the money to fix problems that should've been caught before closing.

Looking ahead to April 2026, I predict we're going to see even more issues surface as these 1980s and 1990s homes age out of their major systems. The furnaces that were installed in the late 1990s are already on borrowed time. Roofs from that era are showing serious wear. And don't get me started on the original hardwood floors that are buckling from decades of moisture issues that were never properly addressed.

My advice? Don't let the competition scare you into making a decision you'll regret for the next 25 years of mortgage payments. Get the inspection, even if it means your offer isn't the first one accepted.

After 15 years of protecting families from expensive surprises, I've learned that a thorough inspection isn't just about finding problems – it's about giving you the information you need to make smart decisions about your biggest investment. If you're serious about buying in Newmarket, let's talk before you put that offer in. I'd rather spend three hours finding problems now than watch you discover them after you've signed the papers.