I scheduled my first home inspection the day after my offer was accepted, which was about two months before I understood what a home inspection actually is. I thought it was a pass/fail test. Either the house passes and you buy it, or it fails and you walk away. That is not what it is. A home inspection is a snapshot of a house’s condition on one specific day, performed by a person who is good at looking at systems but is not allowed to tear into walls, and whose report will list a lot of items without ranking them in order of how much they matter.
The inspection on my first house came back with 47 items. I panicked about all 47. I should have panicked about three of them.
What the inspection covers
The ASHI Standards of Practice define what a home inspection is required to examine. In practice, a standard home inspection covers the major visible and accessible systems of the house.
Structure. Foundation, framing, floors, walls, ceilings, roof structure. The inspector is looking for cracks, settlement, water damage, sagging, and signs of structural movement. They are not engineering the structure. They are looking for visible indicators that something may be wrong.
Roof. Shingle condition, flashing, gutters, downspouts, visible penetrations. They will note missing shingles, damaged flashing, and signs of leaking, but they may not get on the roof if it is too steep or too high.
Plumbing. Visible pipes, fixtures, water heater, water pressure, drainage. They run every faucet, flush every toilet, and check under every sink. They cannot see what is inside the walls.
Electrical. Service panel, breakers, visible wiring, outlets, GFCI protection in wet areas. They check that outlets work, that the panel is properly labeled, and that no obvious hazards exist (exposed wiring, double-tapped breakers, lack of GFCI in bathrooms and kitchens).
HVAC. Heating and cooling systems, ductwork (where visible), thermostat function. They run the system and check that it heats and cools. They do not certify its remaining life or efficiency rating.
Exterior. Siding, windows, doors, grading (whether water drains away from the foundation), walkways, driveways. They note cracks, rot, failed caulking, and drainage issues.
Interior. Walls, ceilings, floors, stairs, railings, doors, windows (from inside). They are looking for water stains, cracks, uneven floors, and anything that suggests a hidden problem behind the surface.
The three things the inspection misses
This is the part I wish someone had explained before I signed my first inspection report.
Anything behind walls, under floors, or above ceilings that is not accessible. An inspector cannot see the plumbing inside your walls, the wiring behind your drywall, or the condition of the subfloor under the tile. If there is a slow leak behind the bathroom wall that has not yet stained the surface, the inspector will not find it. If there is knob-and-tube wiring in a section of the attic that is insulated over, the inspector is not required to remove insulation to check. ASHI standards explicitly exclude systems and components that are “not readily accessible.”
Environmental hazards. Radon, mold, asbestos, lead paint, and termites are not part of a standard home inspection. Each one requires a separate specialist and a separate test. On my first house, nobody mentioned radon. I found out about the radon problem after closing, when I paid a contractor for a separate test as part of an unrelated basement project. The mitigation cost $1,200 and could have been a negotiation point if I had known to test for it before closing.
The sewer line. Most inspectors do not scope the sewer line unless you specifically ask and pay extra ($150 to $300 for a camera scope). On houses older than 40 years, the sewer lateral is one of the highest-cost hidden problems. Tree roots, clay pipe deterioration, and bellied sections can all cause backups that cost $5,000 to $15,000 to repair. My first house needed a sewer line repair in year two. Cost: $3,200. If I had scoped the line before closing, I would have either negotiated a credit or walked.
What to do with the report
The 47-item report on my first house included things like “missing outlet cover in garage” and “HVAC filter dirty” alongside “evidence of prior water intrusion at the foundation wall.” All 47 items were listed in the same format, with the same font size, as if they were equally important. They were not.
Here is how I read inspection reports now, on my second purchase and when friends ask me to look at theirs.
Structural, foundation, and water intrusion findings go to the top. These are the items that cost real money and indicate systemic problems. A foundation crack that an engineer needs to evaluate is a different category from a missing outlet cover.
Roof, HVAC, and water heater age and condition are next. These are the big-ticket replacement items. If the roof is 18 years old on a 20-year shingle, that is a $10,000 to $15,000 expense in the near future. If the HVAC is 14 years old, same. These are not deal-killers, but they are negotiation points.
Everything else is maintenance. Dirty filters, loose handrails, missing caulk, a slow-draining sink. These are real items that should be fixed, but they are not reasons to renegotiate or walk away. They are reasons to bring a screwdriver and a caulk gun on move-in day.
The version that would have saved me money
If I could go back to my first inspection, I would have done three things differently. I would have asked for a separate radon test ($150). I would have asked for a sewer line camera scope ($200). And I would have read the report with a friend who had bought a house before, someone who could tell me which of the 47 items were furniture-scratches and which were real money. The total cost of those three additions would have been under $400. The cost of not doing them was over $4,000 across the first two years of ownership.
The inspection is not a guarantee. It is a trained set of eyes on the parts of the house you cannot evaluate yourself. Use it as a negotiation tool and a planning document, not as a pass/fail test, and add the three tests it does not include, because those are the ones that tend to cost the most when they surprise you.