The inspection happens after your offer is accepted, on a clock, with your earnest money already committed. The showing happens before any of that — which makes it the cheapest look you will ever get at the house. Most buyers spend it imagining furniture.
You don't need tools, and you don't need expertise. You need to know where houses tell on themselves. None of what follows is a diagnosis — a stain has a dozen possible causes, and only some of them are expensive. The point is different: every flag you spot at the showing becomes a specific instruction for the professional inspector you are absolutely going to hire. “Please look hard at the ceiling below the hall bathroom” gets you a better inspection than silence does.
Start at the curb and walk the perimeter if you can. The single most consequential thing to notice costs nothing to see: which way the ground slopes. Soil should fall away from the foundation on all sides. Ground that slopes toward the house, flowerbeds banked high against the siding, downspouts that dump right at the foundation wall — these are how water gets into basements and crawl spaces, and water at the foundation is behind a remarkable share of the expensive findings that show up later in inspection reports.
Then look up. You can't inspect a roof from the ground, but you can notice curling or missing shingles at the edges, moss in the shaded valleys, sagging along the ridge line, and gutters pulling away or overflowing with plant life. A ridge that dips is worth an inspector's close attention; so is a roof that looks patched in one section, which often means a leak was chased there before.
Walk close to the foundation where it's visible. Hairline vertical cracks in concrete are commonly ordinary shrinkage. What earns a note: cracks wide enough to slip a coin into, cracks that run horizontally or in stair-step patterns through block or brick, and any section of wall that visibly bows or leans. Again — you're not concluding anything. You're writing it down.
If the house has a basement, it is the most honest room you will visit, so insist on seeing it. Use your nose first: a musty, damp smell that hits you on the stairs is the house reporting its moisture history, and no amount of fresh paint covers it for long. Speaking of fresh paint — a basement where only the bottom three feet of the walls have been recently painted deserves a raised eyebrow, and a dehumidifier running in an empty house deserves two.
Look at the base of the walls and the floor for white chalky mineral staining, water lines, rust rings under appliance feet, and storage kept strategically on pallets. Look at any exposed wood framing for dark staining or the mud tunnels that termites build. And glance at the seller's belongings: if nothing is stored directly on the floor, ask yourself why.
This is also where you'll often find the water heater, the furnace, and the main panel together in one visit — note ages if there are labels, note rust, note anything that looks improvised.
Open the panel door — just the door, never the cover — and read the brand name. A handful of older panel brands, Federal Pacific and Zinsco most famously, have reputations poor enough that many inspectors flag them on sight and some insurers ask pointed questions about them. Finding one is not a verdict; it is a name you write down so your inspector and, likely, a licensed electrician can tell you what you're actually dealing with. Replacement, when it's called for, commonly runs into the low four figures — which is exactly the kind of number that belongs in a negotiation rather than a surprise.
Elsewhere, you're looking for the signature of amateur work: extension cords doing permanent duty, outlets or switches that sit crooked or loose in the wall, wiring stapled along surfaces in a finished space, junction boxes without covers in the basement or garage, and two-prong outlets throughout an older house. A garage or basement workshop wired with visible enthusiasm and no permit is one of the most common finds in older housing stock — and DIY wiring you can see is the reason to worry about DIY wiring you can't.
These are the rooms where water lives, so water is what you're looking for. Open the cabinet under every sink: staining, warped shelf board, a bowl positioned under the trap, or the smell of damp particleboard all mean the drips here have history. Run the faucets for a moment if you can; listen for hammering pipes and watch how fast the drains clear — slow drains in more than one room is a note for the inspector about the main line.
In bathrooms, press gently on the floor beside the toilet and at the tub edge — softness or flex means water has been getting into the subfloor. Look at the grout and caulk lines; look for tiles that have been patched in mismatched batches. Check the ceiling directly below every upstairs bathroom — from the room underneath. A ring stain on that ceiling, even a painted-over one, is one of the most specific instructions you can hand your inspector.
In the kitchen, look behind and under the dishwasher and refrigerator lines where floors quietly rot, and note any outlet near the sink that isn't a test-button type.
Every old house has settled a little, and a gentle out-of-level in a hundred-year-old floor can be entirely benign character. What you're logging is pattern and clustering. Doors that won't latch, and door frames visibly out of square, in the same corner of the house where the floor slopes — that cluster is a question about the structure below, and it's a question for a professional, not for you. Diagonal cracks radiating from the corners of doors and windows are more interesting than random hairlines. Fresh drywall patches in those same locations are the most interesting of all.
Bring a marble if you like — but honestly, your feet will tell you. Walk every room slowly once, and pay attention to where you drift.
This walk-through is the qualitative version; the room-by-room red-flag checklist you can carry into the showing — plus the report decoder and negotiation scripts for everything the inspection turns up afterward — is the Inspection IQ Package ($29).
Sellers stage for the eyes, and it's much harder to stage for the nose. Musty means moisture, somewhere, recently. A heavy air-freshener presence in one specific room is worth wondering about — what does this room smell like without help? A sharp sewer smell near a floor drain or a little-used bathroom often just means a dried trap, but it goes on the list anyway. And on a showing day when every window is open in unremarkable weather, ask yourself what airing-out is in progress.
One more sense: sound. Squealing or grinding from the furnace or air handler when the system cycles, and gurgling from drains when a fixture upstairs is running, are both worth a line in your notes.
Three things. First, hand it to your inspector before the inspection — a good one will be glad to have it, and it turns a standardized once-over into a targeted examination. If you're still choosing that inspector, the list also makes your interview sharper; there's a companion guide on exactly what to ask a home inspector before, during, and after.
Second, let the list shape your expectations before the report arrives. If you spotted the sloped grading and the stained basement wall yourself, the report's moisture section won't ambush you — and you'll already be thinking about the follow-up rather than the shock. The report will still contain two hundred findings of every size; sorting them is its own skill, covered in how to read a home inspection report.
Third, keep perspective. Nothing you find at a showing is a reason to skip the inspection or a substitute for one — a checklist replaces a licensed inspector no more than a guide to fixing a leaky faucet replaces a plumber. Almost everything above has an innocent explanation available. The showing walk exists so that the guilty explanations get found in your option period, priced by the right specialist, and put on the table — instead of found the first winter you own the house.
Opening sink cabinets, closets, and the panel's outer door is ordinary buyer diligence, and agents see it constantly. What you don't do: remove the panel's inner cover, move the seller's belongings, or open anything locked. If a listing agent objects to you looking under a sink, that reaction is itself information.
Often, yes — nearly every house shows a few, and most turn out to be maintenance rather than disaster. What the flags change is your process: they go to your inspector as targets, and the serious ones get specialist follow-up during your inspection period, while you can still negotiate or walk away. A flag you found early is leverage; the same problem found after closing is just a bill.
No. The showing walk is a supplement, never a substitute. Inspectors carry instruments, training, and a few hundred houses' worth of pattern recognition; they go on the roof and into the crawl space you didn't. Waiving inspection to sweeten an offer is a decision to buy whatever the house is hiding, at full price.
Water, in all its forms — grading toward the house, stains, smells, soft floors. Water is behind the most expensive categories of damage a house suffers, it works slowly and invisibly, and every other system in the house lasts longer when it's kept out. If you only check one category at a showing, follow the water.
The showing is your free look. The inspection period is your only leverage. Walk into both prepared.
Get the Inspection IQ Package — $29 Instant download · Yours forever · All sales finalEducational information, not legal advice. Laws and practices vary by state and change over time; verify anything you intend to rely on, and consult a licensed professional in your state for advice about your specific situation.