As a Registered Home Inspector serving the Rosedale community, I've walked through hundreds of homes

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Aamir Yaqoob, RHI

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

April 7, 2026 · 4 min read

As a Registered Home Inspector serving the Rosedale community, I've walked through hundreds of homes over the years, and certain issues keep appearing time and again. These aren't necessarily deal-breakers, but they're important findings that every homeowner and buyer should understand. Today I want to share the five most common inspection discoveries I encounter in our beautiful neighborhood, along with what they really mean for your wallet and peace of mind.

Aluminum wiring tops my list of frequent findings, particularly in homes built between 1965 and 1975. During that era, aluminum was widely used as a cost-effective alternative to copper wiring, but we now know it presents some unique challenges. The metal expands and contracts more than copper, potentially causing loose connections over time. These loose connections can create heat buildup and, in worst-case scenarios, fire hazards.

When I discover aluminum wiring during an inspection, I always recommend having a qualified electrician evaluate the entire system. The good news is that aluminum wiring can be safe when properly maintained and connected with the right devices. Remediation costs typically range from $1,500 to $4,000 for a typical Rosedale home, depending on whether you opt for complete rewiring or strategic upgrades at connection points.

Poly-B plumbing represents another common finding in homes from the 1970s through early 1990s. This gray plastic piping was popular because it was inexpensive and easy to install. However, Poly-B has proven susceptible to degradation from chlorine in municipal water supplies and can become brittle over time. While not every Poly-B system will fail, the potential for sudden leaks makes it a significant concern.

Replacement costs for Poly-B plumbing typically run between $8,000 and $15,000 for a complete home, though partial replacements in high-risk areas like bathrooms and kitchens can cost $3,000 to $6,000. Many insurance companies now require disclosure of Poly-B plumbing, and some may refuse coverage or charge higher premiums.

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Foundation cracks appear in nearly every home inspection I conduct, which isn't surprising given our climate extremes. Most hairline cracks are simply settling and pose no structural threat. However, I pay close attention to horizontal cracks, stepped cracks in block foundations, or any crack wider than a quarter-inch. These can indicate more serious structural movement or water infiltration issues.

Minor crack repairs typically cost $300 to $800 per crack for professional sealing and waterproofing. More extensive foundation work, including underpinning or major structural repairs, can range from $10,000 to $30,000 or more. The key is addressing issues early before they become major problems.

Roof wear and aging consistently round out my most common findings. Our harsh winters and summer heat take a toll on roofing materials, and I regularly see worn shingles, damaged flashing, and compromised gutters. A typical asphalt shingle roof lasts 20 to 25 years in our climate, while metal roofing can extend that to 40 years or more.

Partial roof repairs might cost $1,500 to $4,000, while complete roof replacement typically ranges from $12,000 to $25,000 depending on size, materials, and complexity. Regular maintenance can significantly extend roof life, making annual inspections and prompt repairs a wise investment.

HVAC system failures complete my top five, particularly with older furnaces and air conditioning units struggling with our temperature extremes. I frequently encounter aging heat exchangers, inefficient units, and ductwork issues that impact both comfort and energy costs.

Just last month, I inspected a lovely 1980s home where the original furnace was still running but showing clear signs of wear. The heat exchanger had developed small cracks, and the system's efficiency had dropped significantly. The homeowners faced a $4,000 to $8,000 replacement cost, but I helped them understand this was actually an opportunity to upgrade to a high-efficiency system that would reduce their monthly energy bills.

HVAC repairs can range from $500 for minor fixes to $12,000 for complete system replacement. Regular maintenance, including annual tune-ups and filter changes, can prevent many costly failures and extend equipment life significantly.

These common findings shouldn't discourage you from loving your Rosedale home or pursuing that perfect property. Knowledge is power, and understanding these issues helps you make informed decisions about maintenance, budgeting, and improvements. Remember, a thorough inspection isn't meant to scare you – it's designed to give you the complete picture so you can enjoy your home safely and confidently for years to come.

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