What to Look for in a Home Inspection (And the Questions Most Buyers Forget to Ask)

You found the house. You made the offer. The seller accepted. Now comes one of the most important — and most misunderstood — steps in the entire homebuying process: the home inspection.

Most first-time buyers treat the inspection like a formality. They show up, nod along, and wait for a stack of paperwork they'll skim later. That's a mistake. The home inspection is arguably the best $300–$500 you'll spend in this whole process, and if you know what to look for — and what to ask — it can save you from a money pit, give you negotiating leverage, or confirm you're making a great decision. Before you get there, get started with our free homebuyer guide so you understand exactly how the inspection fits into your full buying timeline.

This is your field guide.

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What the Inspector Actually Checks

A licensed home inspector does a visual, non-invasive examination of the home's systems and structure. They are not allowed (or equipped) to open walls, run invasive tests, or make repairs — but they cover a lot of ground. Here's what's on a standard home inspection checklist:

Structure and Foundation

• Foundation condition (cracks, settling, signs of water intrusion)
• Framing, load-bearing walls, visible structural components
• Basement or crawl space condition

Roof and Attic

• Roof age and condition (shingles, flashing, gutters)
• Attic ventilation and insulation
• Signs of leaks or moisture damage

Exterior

• Grading and drainage (does water flow away from the house?)
• Siding, trim, caulking condition
• Driveway, walkways, decks, and porches

Plumbing

• Water pressure and flow at fixtures
• Drain function and signs of leaks under sinks
• Water heater condition, age, and safety features
• Visible supply and drain lines

Electrical

• Main panel condition (breaker type, capacity, labeling)
• GFCI outlets in kitchens, bathrooms, garages
• Visible wiring in attic or basement
• Smoke and CO detectors

HVAC Systems

• Furnace and air conditioning unit condition and age
• Filter condition, visible ductwork
• Thermostat operation

Interior

• Walls, ceilings, and floors for cracks, stains, or soft spots
• Windows and doors (operation, seals, locks)
• Insulation in accessible areas

The inspector documents what they find — defects, safety issues, deferred maintenance, and items that need professional follow-up — in a written report, usually delivered within 24 hours.

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The 7 Biggest Red Flags Buyers Ignore

Not every issue in a report is a dealbreaker. But some are. Here are the home inspection red flags that deserve serious attention, in order of severity:

1. Foundation problems

Cracks in the foundation aren't automatically disqualifying, but horizontal cracks or bowing walls are serious structural concerns. Vertical hairline cracks from settling are common; wide or stair-step cracks in brick or block may indicate ongoing movement. Get a structural engineer out before you proceed.

2. Evidence of water intrusion

Water is a home's worst enemy. Look for staining on ceilings (especially below bathrooms or exterior walls), musty smells in the basement or crawl space, efflorescence (white mineral deposits) on basement walls, and soft spots in flooring near bathrooms. Active leaks are obvious — but old water damage that's been "cleaned up" is what buyers miss.

3. Roof at end of life

A roof that's past its expected lifespan isn't just a maintenance item — it's a potential insurance issue. Some insurers won't write a new policy on a house with an aging roof, which means you could lose coverage or pay significantly higher premiums. Know the age and ask for documentation.

4. Outdated or unsafe electrical

Federal Pacific Electric (FPE) Stab-Lok panels and aluminum wiring in older homes are known safety hazards. Knob-and-tube wiring in uninsulated attics is another red flag. An inspector will flag these; take them seriously. Rewiring a house is expensive, but electrical fires are worse.

5. HVAC systems near the end of their lifespan

Furnaces typically last 15–20 years; central AC units 10–15 years. If both systems are at or past their expected lifespan, you're looking at potential replacement within a few years of purchase. That's a negotiating point, not a dealbreaker — but price it in.

6. Signs of pest activity

Home inspectors aren't pest inspectors, but they may note evidence of wood-boring insects (sawdust trails, hollow-sounding wood) or rodent activity. If the inspector flags anything, order a separate pest inspection before closing. Termite damage can be extensive and hidden.

7. Improper DIY work

Look for non-permitted additions, amateur electrical work (double-tapped breakers, mismatched wire gauges, outlets without boxes), and plumbing that doesn't meet code. These aren't just cosmetic concerns — unpermitted work can create liability issues when you sell, and some lenders won't close on a home with unpermitted structural additions.

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Questions to Ask Before and During the Inspection

This is where most buyers leave money on the table. Being present at the inspection is standard practice, but most people spend the time wandering the house instead of talking to the inspector. Here's what to ask:

Before the inspection:

• *"How long have you been inspecting in this area?"* — Local experience matters. An inspector who knows your market knows what to expect from homes of that age and construction type.
• *"What's included in your inspection, and what isn't?"* — Some inspectors offer add-on testing (radon, sewer scope, thermal imaging). Know what you're getting.
• *"Are you a member of ASHI or InterNACHI?"* — These are the two main professional associations with standardized practices and ethics requirements. Membership isn't mandatory but signals professionalism.

During the inspection:

• *"Is this a safety issue or a maintenance issue?"* — Helps you prioritize what actually matters.
• *"How much would it roughly cost to address this?"* — Inspectors won't quote you, but they can tell you whether something is a $200 fix or a $20,000 fix.
• *"Is this something I should monitor, or does it need immediate attention?"* — Directs your post-inspection action plan.
• *"Have you seen worse, or is this unusual for a house this age?"* — Context matters enormously. A 70-year-old house will have different baseline expectations than a 10-year-old one.
• *"What would you fix first if this were your house?"* — Often the most useful question you can ask.

Walk through the house with the inspector. Ask about everything that draws your eye. You're paying for their expertise — use it.

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What a Report Won't Tell You

Here's something buyers don't hear often enough: even a thorough home inspection has real limits. A report won't tell you:

The neighborhood. The inspector can tell you the house has good bones. They can't tell you what the block sounds like at 11pm on a Friday, whether the schools are improving or declining, or whether that commercial lot two streets over is being rezoned. What's behind the walls. Home inspectors do a visual inspection only. Hidden mold behind drywall, old plumbing inside walls, or pest damage under flooring won't show up unless there are visible indicators. If something smells off (literally or figuratively), ask about specialized testing. The full story on past repairs. An inspector can see that a repair was made; they generally can't tell you whether it was done properly or whether the underlying issue was fully resolved. Ask the seller for any permits, contractor invoices, or receipts related to known repairs. Whether the price is right. The inspection tells you about the physical condition of the property. It says nothing about whether you're overpaying, what comparable homes are selling for, or whether the sellers have priced in deferred maintenance. What to do next. The inspection report gives you information. It doesn't give you a decision framework for how to use that information in negotiations, which items are truly non-negotiable, or when to walk away.

That last point is exactly why preparation matters before you ever schedule the inspection. Our Smart Buyer Toolkit includes a dedicated Home Tour & Inspection Guide that walks you through how to read a report, what to prioritize, and how to approach the seller once you have findings in hand.

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How to Use Inspection Findings to Negotiate

Getting a list of issues in your inspection report doesn't mean the deal falls apart — it means you now have information the seller has to address. Here's how to use it strategically:

Separate deal-breakers from negotiating chips.

True dealbreakers are things that affect safety, habitability, or lender approval: significant structural damage, active roof leaks, failed septic systems, serious electrical hazards. Everything else is a negotiating chip.

Don't ask for everything.

Submitting a repair request with 40 line items signals to the seller that you're difficult, not diligent. Prioritize the big-ticket items — major systems, structural concerns, anything with a repair estimate over $1,000 — and let the cosmetic stuff go.

Ask for a credit, not a repair.

When possible, ask for a closing cost credit or price reduction instead of asking the seller to make repairs. This is almost always preferable — you know exactly who will do the work, and you know it'll be done right. Sellers motivated to close will often agree.

Know your leverage.

In a hot market with multiple offers, asking for $10,000 in credits on a minor issue list may kill your deal. In a slow market where the house has been sitting, you have more room to negotiate. Read the situation.

Get second opinions on big items.

If the inspector flags something significant — a cracked heat exchanger, evidence of foundation movement, suspected pest damage — bring in a specialist before requesting repairs or credits. You need a professional quote to negotiate from a position of knowledge.

Remember your contingency.

Most purchase contracts include an inspection contingency that lets you walk away within a certain timeframe if the inspection reveals issues you're unwilling to accept. Know your contingency window. Don't let it expire while you're still deciding.

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You Don't Have to Navigate This Alone

The home inspection is one of about a dozen moments in the homebuying process where having the right information at the right time changes outcomes. Walk in prepared, ask the right questions, know what to look for in the report, and you'll be in a position to negotiate from knowledge — not anxiety.

If you haven't already, download our free homebuyer guide to get the full picture of what to expect at every step. And if you're ready for the complete toolkit — including the Home Tour & Inspection Guide, Offer Strategy Guide, and Hidden Costs Calculator — the Smart Buyer Toolkit has everything you need to go into this process like you've done it before.

You've got this.