I'm standing in the basement of a house on Rossland Road in Ajax, and the sour smell hits me before

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Aamir Yaqoob, RHI

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

April 8, 2026 · 5 min read

I'm standing in the basement of a house on Rossland Road in Ajax, and the sour smell hits me before I even reach the bottom step. The homeowner's telling the buyers upstairs about the "minor water issue they fixed last spring," but I'm staring at black mold creeping up the drywall behind the water heater. The concrete floor's got that telltale white chalky residue that screams foundation problems, and when I press my moisture meter against the wall, it's reading numbers that make my stomach drop. This is day three of four inspections this week, and I've already seen two deals fall apart because buyers didn't know what to look for.

You're looking at spending over a million dollars in Ajax - $1,000,629 to be exact based on what I'm seeing in the market right now. With 167 listings and houses moving in about 20 days, buyers are making fast decisions on properties that average 25-30 years old. That means you're buying homes built in the 1990s and early 2000s, and let me tell you something after 15 years in this business - that's exactly when builders were cutting corners to keep up with demand.

What I find most concerning in Ajax is the number of homes with foundation issues that sellers are trying to hide with fresh paint and new flooring. I inspected a place on Harwood Avenue last month where they'd installed beautiful luxury vinyl plank right over a basement that was slowly sinking. The cracks in the foundation walls were hairline thin, but when I checked the floors upstairs with my level, we had a two-inch drop from one end of the house to the other. The repair estimate? $18,500 for foundation stabilization, plus another $6,200 to fix the floors that would buckle once the foundation work was done.

Buyers always underestimate what it costs to fix major systems in these older Ajax homes. The furnaces I'm seeing were installed in the early 2000s, and they're reaching that 20-year mark where everything starts failing at once. Just last week on Bayly Street, I found a furnace that was pumping carbon monoxide into the house because the heat exchanger had cracked. The family had been living with headaches and fatigue for months, thinking it was just stress from the move. A new high-efficiency furnace for a 2,500 square foot home? You're looking at $8,900 minimum, and that's if the ductwork doesn't need replacing too.

The electrical systems in these Ajax homes worry me more than anything else. I see panel boxes from the late '90s that were recalled for fire hazards, and homeowners who've been adding circuits without permits for years. Sound familiar? I pulled the panel cover off a house on Kingston Road last Tuesday, and the main breaker was literally held together with electrical tape. The previous owner had been running a hot tub off an extension cord plugged into the garage for three years. When I see DIY electrical work like that, I know I'm going to find more problems, and I'm usually right. Full electrical panel replacement runs $3,200, but if they've been doing amateur work throughout the house, you could be looking at $12,000 to bring everything up to code.

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What really gets me is the roof situations I'm finding. These 25-year-old asphalt shingles are at the end of their life, but sellers are doing patch jobs instead of full replacements. I climbed onto a roof on Salem Road last month and counted 47 missing or damaged shingles, plus flashing around the chimney that was completely shot. The seller had thrown some roofing cement around the problem areas and called it fixed. A full roof replacement on these typical Ajax homes costs $16,800, and if water's been getting in, you're adding another $4,500 for deck replacement and insulation repair.

In 15 years, I've never seen foundation waterproofing issues resolve themselves, but that's what a lot of these Ajax sellers seem to think will happen. The clay soil here expands and contracts with the seasons, putting constant pressure on foundation walls. I see fresh sealant slapped over cracks that'll open right back up come spring. Guess what we found in a house on Westney Road? The basement had been flooded three times in five years, but they'd just installed a sump pump and figured that solved everything. Proper exterior waterproofing for a typical Ajax home foundation runs $14,200, and you can't see if it's been done right without excavation.

The HVAC ductwork in these homes tells a story that most buyers never hear. I crawl through crawl spaces and attics where ducts are disconnected, crushed, or completely missing insulation. Your heating bills in a house with damaged ductwork can run 40% higher than they should. I tested a home on Church Street where half the heated air was being pumped directly into the crawl space through a duct that had come apart years ago. The homeowners were paying $340 a month in winter heating bills when it should've been $190.

Here's what buyers don't realize about the plumbing in these Ajax properties - the original builders used supply lines that are failing right now, in 2024 and into 2026. I find pinhole leaks in copper pipes that homeowners don't even know about because they're happening behind walls. Water damage is expensive and it spreads fast. I opened a bathroom wall on Audley Road and found studs that were rotted through because a small leak had been dripping for months. The repair cost wasn't just the $890 for new pipes - it was $5,600 for structural repairs and mold remediation.

The risk score for Ajax properties sits at 59 out of 100, and from what I see daily, that feels about right. These aren't terrible houses, but they're at that age where everything needs attention at the same time, and most sellers are doing the bare minimum to get them market-ready.

Don't let the pressure of this market push you into skipping a thorough inspection on an Ajax property. I've seen too many families spend their life savings on problems that could've been caught early. Call me before you sign anything - I'll make sure you know exactly what you're buying.

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I'm standing in the basement of a house on Rossland Road ... — 2026 Guide | Inspectionly