What Does a Home Inspection Cover? Room-by-Room Breakdown
What Home Inspectors Actually Check
A standard home inspection follows guidelines set by the American Society of Home Inspectors (ASHI) or the International Association of Certified Home Inspectors (InterNACHI). The inspector examines the visible and accessible components of the home’s major systems. They’re looking for defects, safety hazards, and items nearing the end of their useful life.
A typical inspection takes 2-4 hours depending on the size and age of the home. The inspector will work through these major categories:
- Structural components — Foundation, framing, load-bearing walls, columns, beams, floor structure
- Roof — Shingles or other covering, flashing, gutters, downspouts, chimneys, skylights
- HVAC systems — Furnace, air conditioner, heat pump, ductwork, thermostat, ventilation
- Plumbing — Supply lines, drain lines, water heater, fixtures, water pressure, visible pipes
- Electrical — Panel, breakers, wiring type, outlets (GFCI in wet areas), grounding, visible wiring
- Exterior — Siding, trim, windows, doors, decks, porches, grading, drainage
- Interior — Walls, ceilings, floors, stairs, railings, doors, windows
- Insulation and ventilation — Attic insulation depth, vapor barriers, bathroom and kitchen exhaust fans
- Built-in appliances — Dishwasher, range, oven, garbage disposal, microwave (if built-in)
The inspector tests every system they can safely access. They run the furnace and A/C, flush every toilet, run every faucet, test every outlet, open every window, and check every door. If you’re buying a home and doing your own walkthrough first, think of the inspector as the deep-dive follow-up to your initial tour.
Room-by-Room Inspection Breakdown
Here’s what happens in each area of the home during a standard inspection:
| Area | What’s Checked | Common Issues Found |
|---|---|---|
| Exterior / Foundation | Foundation walls, grading, drainage, siding, trim, windows, doors | Cracks in foundation, negative grading (water toward house), rotted trim, caulking gaps |
| Roof | Covering material, flashing, gutters, vents, chimneys | Missing/curling shingles, damaged flashing, clogged gutters, cracked chimney cap |
| Attic | Insulation depth, ventilation, roof sheathing, framing | Insufficient insulation, blocked soffit vents, water stains, pest evidence |
| Kitchen | Appliances, plumbing, electrical, ventilation, counters, cabinets | Leaking under sink, no GFCI outlets, improper venting of range hood, slow drains |
| Bathrooms | Toilets, sinks, tub/shower, ventilation, tile, caulking | Running toilets, cracked caulking, missing exhaust fan, water damage around tub |
| Bedrooms / Living Areas | Walls, ceilings, floors, windows, doors, outlets, smoke detectors | Cracked drywall, windows that won’t open, missing smoke detectors, ungrounded outlets |
| Basement / Crawl Space | Foundation, moisture, structure, plumbing, electrical, insulation | Water intrusion, efflorescence, sagging floor joists, exposed/damaged wiring |
| Garage | Door operation, fire separation wall, electrical, floor | Auto-reverse not working on garage door, missing fire-rated drywall, unprotected outlets |
| Electrical Panel | Brand, capacity, wiring type, breakers, grounding | Double-tapped breakers, Federal Pacific/Zinsco panels, aluminum wiring, undersized service |
| HVAC | Furnace, A/C, ductwork, thermostat, filter | Old equipment nearing end of life, dirty filter, disconnected ducts, cracked heat exchanger |
| Water Heater | Age, type, condition, TPR valve, venting | Past useful life, missing TPR discharge pipe, improper venting, corrosion |
What a Standard Inspection Does NOT Cover
This is where buyers get surprised. A home inspection is broad but not deep. The inspector looks at accessible, visible components. They do not move furniture, dig underground, or open walls. And several important tests are outside the scope of a standard inspection entirely.
Mold
Inspectors may note visible mold or conditions likely to cause mold (moisture, poor ventilation), but they don’t test for mold species or hidden mold behind walls. If you see signs of moisture or smell mustiness, hire a certified mold inspector separately. Cost: $300-$600 for testing.
Asbestos
Common in homes built before 1980 — found in floor tiles, pipe insulation, popcorn ceilings, siding, and roof shingles. Inspectors can’t identify asbestos by sight alone; it requires lab testing. If you’re buying a pre-1980 home and plan any renovation, get an asbestos survey. Cost: $200-$800.
Lead Paint
Homes built before 1978 may contain lead paint. Sellers must provide a lead paint disclosure, but testing the actual paint requires a separate inspector or XRF device. This matters most if you have young children. Cost: $300-$500 for a full assessment.
Pest/Termite Inspection
Some lenders (especially VA and FHA in certain states) require a separate wood-destroying insect (WDI) report. Your standard inspector may note evidence of pests but won’t provide a formal pest report. In termite-heavy areas like the Southeast and Gulf Coast, get a separate termite inspection. Cost: $75-$150.
Sewer Line Scope
The sewer line from your house to the street is your responsibility, and replacing it costs $5,000-$15,000+. A sewer scope sends a camera through the line to check for cracks, root intrusion, bellies (sagging sections), and material deterioration. This is especially important in older homes with clay or cast iron sewer pipes. Cost: $150-$300.
Well and Septic
If the home uses a private well and/or septic system, those require separate inspections. A well test checks water quality and flow rate. A septic inspection includes locating the tank, checking its condition, and assessing the drain field. Cost: $300-$600 each.
For each of these add-on inspections, talk to your real estate agent about which ones make sense for the specific property and area. In the Pacific Northwest, sewer scopes are almost standard. In the Southeast, termite inspections are a given. Your agent should know what’s customary in your market.
How to Read an Inspection Report Without Panicking
Inspection reports are long. A typical report runs 30-50 pages with photos, descriptions, and recommendations for every item checked. First-time buyers often panic when they see a 40-page report full of issues. But context matters.
Every inspection report categorizes findings by severity. Here’s what each level means:
Major Defects
These are problems that affect the safety, structural integrity, or habitability of the home. Examples: cracked foundation, active water intrusion, electrical hazards, roof failure, non-functioning heating system. Major defects are the items that might cause you to negotiate hard or walk away from the deal.
Moderate Defects
These are items that need attention within the next 1-3 years but aren’t immediate safety concerns. Examples: HVAC system nearing end of life, missing GFCI outlets in bathrooms, aging water heater, minor plumbing leaks. These are legitimate repair requests or negotiation points.
Minor and Maintenance Items
These are normal wear-and-tear items or deferred maintenance. Examples: caulking gaps, dirty furnace filter, missing outlet covers, minor grading issues, sticky windows. Every house has these. They don’t justify price reductions and asking the seller to fix them can make you look unreasonable.
Informational Items
These are observations, not defects. The inspector notes the age of systems, the type of wiring, the insulation R-value, and other facts. No action needed — just things you should know as the owner.
Focus on the major and moderate items. That’s where the real decision-making happens. Everything else is just homeownership — every house requires ongoing maintenance and occasional repairs.
What to Do With Your Inspection Results
You have your report. Now what? You have three basic options, and which one you choose depends on what the inspection found and the current market conditions.
Ask for Repairs
You can ask the seller to fix specific items before closing. This works best for defined problems — replace the water heater, fix the leaking pipe, repair the broken window. It works poorly for subjective items — “make the basement dry” is vague and invites the cheapest possible fix.
Downsides: the seller picks the contractor (usually the cheapest), and you get whatever quality of work they choose. You also need to re-inspect the repairs before closing.
Request a Seller Credit
Instead of asking the seller to do the work, ask for a dollar credit at closing that reduces your costs. This gives you control over the repairs — you choose the contractor, the materials, and the timeline.
A seller credit is often more attractive to the seller because they don’t have to coordinate repairs while packing to move. It’s usually better for you because you control the quality. This is the approach I recommend most often.
Walk Away
If the inspection reveals problems that are too expensive, too risky, or too fundamental to fix, you can cancel the contract during your inspection contingency period and get your earnest money back.
When should you walk? When the problems are structural and the cost is uncertain. When the seller won’t negotiate on serious defects. When the total repair cost, added to the purchase price, makes the home overpriced compared to alternatives. Trust your gut — if the house feels like a money pit before you even own it, it probably is.
Which Defects Actually Matter Most
| Defect Category | Action Level | Typical Negotiation Approach |
|---|---|---|
| Safety hazards (electrical, gas, carbon monoxide) | Must fix before closing | Seller repairs — non-negotiable for safety |
| Structural damage (foundation, framing) | Get specialist evaluation | Significant credit or price reduction, or walk away |
| Active water intrusion | Must address before closing | Seller repairs with warranty, or credit for professional waterproofing |
| Failing roof | Replace or credit | Credit based on contractor estimates ($8,000-$15,000) |
| Old HVAC/water heater | Budget for replacement | Credit or price reduction for remaining useful life |
| Cosmetic issues | Live with or fix yourself | Don’t ask — weakens your position on real issues |
What a Home Inspection Costs
Home inspection fees vary by location, home size, and home age. Here’s what to budget:
| Inspection Type | Typical Cost | When to Get It |
|---|---|---|
| Standard home inspection | $300-$500 | Every purchase — no exceptions |
| Radon test | $100-$200 | Homes with basements or in high-radon areas |
| Sewer scope | $150-$300 | Homes older than 30 years, or with mature trees near sewer line |
| Mold testing | $300-$600 | If moisture evidence or musty smell present |
| Termite/WDI inspection | $75-$150 | Required by some lenders; standard in Southern states |
| Asbestos survey | $200-$800 | Pre-1980 homes if you plan renovations |
| Well water test | $300-$500 | Any home on a private well |
| Septic inspection | $300-$600 | Any home on a septic system |
For a typical home purchase, plan on spending $400-$700 total: a standard inspection plus one or two add-ons. That’s a tiny fraction of the purchase price and the best money you’ll spend in the entire home buying process.
Who Pays?
The buyer pays for the home inspection. This is standard across virtually every market. Some sellers offer a pre-listing inspection (an inspection done before putting the home on the market), but as a buyer, you should still get your own independent inspection. The seller’s inspector works for the seller.
How to Hire a Good Inspector
Not all home inspectors are equal. Here’s how to find one who actually catches problems instead of rubber-stamping the house.
- Check credentials — Look for ASHI or InterNACHI certification. These organizations require training, exams, and continuing education.
- Ask about experience — You want at least 500 inspections or 3 years of experience. Ask how many inspections they do per year.
- Request a sample report — Review a redacted sample before hiring. You want detailed descriptions with photos, not just checkbox lists.
- Ask about errors and omissions insurance — A professional inspector carries E&O insurance. If they miss something major, there’s a path to resolution.
- Attend the inspection — A good inspector welcomes you to walk along. This is your chance to learn about the house firsthand and ask questions in real time.
Don’t just use whoever your agent recommends. Agents sometimes favor inspectors who don’t “kill deals.” You want an inspector who works for you and reports everything honestly, even if it means the deal falls apart. After all, better to lose a deal than buy a money pit.
Once you’ve reviewed the inspection results and decided to move forward, your next step is either negotiating based on the findings or beginning the closing process. The inspection period is your best and often only chance to catch problems before they become your problems.
Frequently Asked Questions
Can I skip the home inspection to make my offer stronger?
You can, but I’d strongly advise against it for most buyers. A better strategy is to get a pre-inspection (before submitting your offer) so you can waive the inspection contingency with full knowledge of the property’s condition. This makes your offer competitive without taking a blind risk. You’ll pay $300-$500 either way, but at least you’ll know what you’re buying.
What happens if the inspector misses something?
Home inspectors carry errors and omissions insurance for this reason. However, inspectors are limited to what they can see and access — they’re not opening walls or digging up sewer lines. If an inspector misses something that was visible and accessible, you may have a claim against their insurance. If the defect was hidden (behind a wall, under flooring), it’s typically not the inspector’s fault.
Should I be at the inspection?
Absolutely. Walk along for at least the last 30-60 minutes when the inspector does their summary. Ask questions, take your own photos, and get their honest assessment of the home’s condition beyond what the written report says. The verbal conversation often includes context and opinions that don’t make it into the formal report.
Can the seller refuse to allow an inspection?
If your offer includes an inspection contingency and the seller accepts the offer, they’ve agreed to allow access for the inspection. A seller who refuses to allow an inspection after agreeing to it is breaching the contract. Before the offer is accepted, a seller can reject any offer with an inspection contingency — but that’s their choice, and it should raise red flags about what they’re hiding.
Is there an age where a house is “too old” to pass inspection?
Inspections don’t result in pass or fail — they’re informational reports. A well-maintained 100-year-old home can have fewer issues than a poorly built 15-year-old home. Age matters for specific systems (wiring, plumbing, roof), but the overall condition depends on how the home has been maintained and updated over the years. Some of the best-built homes in the country are 80-100 years old.