DIY Home Inspection Checklist: What You Can (and Can't) Catch Yourself

A careful walkthrough before you make an offer can save you the cost of an inspection on a house that was never going to work. But a DIY check is a filter, not a substitute — here's the honest split between what you can catch and what you can't.

What you can reasonably spot yourself

• Grading and drainage: soil sloping toward the house, downspouts dumping at the foundation, water stains in the basement.
• Roof age clues: curling or missing shingles visible from the ground, moss, sagging rooflines.
• Big cosmetic tells: fresh paint in only one basement corner, doors that won't latch, sloping floors.
• Water heater and HVAC age: the manufacture date on the data plate versus a 10–15 year typical lifespan.
• Windows and moisture: failed seals (fogging between panes), soft window sills, musty smells.
• Panel red flags: a "Federal Pacific" or "Stab-Lok" label on the electrical panel — extremely common in Louisville and worth knowing before you offer.

What you can't catch without training and tools

Active knob-and-tube buried in walls, aluminum branch wiring behind cover plates, a cracked furnace heat exchanger, polybutylene supply lines inside walls, an undersized or improperly modified electrical panel, roof problems you can't see from the ground, structural issues masked by finishes, and — critically — the condition of the buried sewer lateral and whether the crawl space is quietly failing. These are where the five-figure surprises live.

Tools don't close the gap

A moisture meter and a cheap thermal camera are fun, but interpreting them is the hard part — thermal images especially are easy to misread. A professional inspection isn't just equipment; it's a licensed inspector who has walked thousands of homes and knows which anomaly is a stain from 1998 and which is an active leak.

The right way to use a DIY walkthrough

Use it to decide whether to make an offer at all, and to build a list of concerns to hand your inspector so they look harder at specific things. It is not a reason to skip the professional inspection — see our piece on whether you should ever waive an inspection for why that's rarely a good trade in this market.

Key takeaways

• You can spot drainage problems, obvious roof age, big cosmetic tells, appliance age, and a Federal Pacific panel label.
• You can't assess hidden wiring, heat exchangers, buried sewer lines, structural issues, or a failing crawl space.
• Consumer moisture meters and thermal cameras are easy to misinterpret without experience.
• Use a DIY walkthrough to decide whether to offer and to brief your inspector — not to replace the inspection.