Pool Inspection Checklist Before Buying a House

A general home inspector will walk past the pool, glance at the equipment, and note something like "pool present, recommend specialist evaluation" in the report. That's not a knock on them, pools are a specialized system, closer to an HVAC unit than a patio feature. If you're buying a house with a pool, the inspection that actually protects you is a separate, focused look at the pool itself, either from a pool-specific inspector or from you, armed with the right checklist.

Why a general home inspection isn't enough

Most standard home inspections cover the pool at a surface level: is there standing water, is the fence in place, does the pump turn on. That tells you almost nothing about whether the pump is on its last season, whether the plaster needs resurfacing in a year, or whether the heater has a cracked heat exchanger. Those are five-figure differences, and they're usually invisible unless someone specifically looks for them.

The surface and structure

Start with what you can see. Surface condition is the single biggest resale-relevant factor, because resurfacing is expensive and hard to negotiate after the fact if it's missed upfront.

• Plaster or gunite: look for cracking, staining, rough or pitted texture, and dark spots that could indicate the surface is thinning. Ask when it was last resurfaced, plaster typically lasts 10 to 20 years depending on water chemistry and climate.
• Pebble or aggregate finish: check for loose pebbles, discoloration, or areas that feel noticeably rougher than the rest.
• Vinyl liner: look for wrinkles, fading, tears near steps or fittings, and how it fits at the wall. Liners typically need replacement every 8 to 12 years.
• Fiberglass shell: check for spider cracks, discoloration, or a chalky texture, and ask whether the shell has ever shifted or delaminated.
• Tile line and coping: chipped tile, loose coping stones, or gaps where coping meets the deck can point to ground movement or age, not just cosmetics.
• Deck: look for major cracks, uneven settling, or drainage that pools water toward the house instead of away from it.

Equipment: age, condition, and what's original

Equipment is where the real cost surprises hide. A pool can look pristine and still have a pump that's about to fail or a heater that hasn't run in two years. Ask the seller for the age and any service records on each piece, and check the data plate on the equipment itself, most manufacturers stamp a manufacture date or serial number that a quick search can decode.

These are typical ranges, not guarantees, equipment that's well maintained can run longer and neglected equipment can fail early. The point isn't to memorize exact years, it's to ask the age of each component and weigh that against how much of your budget you'd want to reserve for near-term replacement.

Run every system, don't just look at it

A pool that looks fine sitting still can hide problems that only show up when the equipment is actually running. Before you close, or during a showing if the seller allows it, ask to see the pool operate for a full cycle.

• Turn the pump on and listen for grinding, screeching, or excessive vibration, and watch for leaks around the pump housing or unions.
• Check the filter pressure gauge at startup and note whether it climbs abnormally fast, which can point to a clogged or failing filter.
• Run the heater (if there is one) and confirm it actually raises water temperature, not just that the display lights up.
• Test any automatic pool cover, cleaner, or automation system through a full cycle rather than a quick press of a button.
• Check all skimmers, main drains, and return jets for adequate flow and no unusual suction or air bubbling, which can indicate a plumbing leak.
• Look at the pool light, if it flickers, won't turn on, or the niche looks corroded, budget for an electrical fix.

Water chemistry and a leak check

Water balance itself isn't usually a deal-breaker, chemistry can be corrected in a weekend. But the readings can be a clue to how well the pool has been maintained overall, and a quick test you can grade against the ideal ranges is worth doing during a walk-through.

Cloudy, green, or heavily discolored water at a showing isn't automatically alarming, plenty of sellers stop maintaining a pool once it's listed. But it does mean you can't fully evaluate the surface underneath, and it's worth asking whether the seller will clear it before closing or credit you for the cleanup. Separately, ask directly whether the pool has ever lost water faster than evaporation alone would explain. A bucket test (float a bucket at the same water level as the pool, mark the waterline inside and outside the bucket, and compare after 24 hours) is a simple, common way to rule out a structural leak versus normal evaporation.

Safety and code items to flag, not diagnose yourself

Pool fencing, gate self-closers, alarms, and electrical bonding requirements vary significantly by state and municipality, and getting this wrong can affect insurability or resale later. Don't try to determine code compliance yourself, note anything that looks obviously missing (no fence or gate, exposed wiring, a missing anti-entrapment drain cover) and have a licensed local inspector or your municipality's building department confirm what's actually required in your area.

After closing: start your own record

Whatever the pool inspection finds, closing day is the moment to start your own service history rather than relying on the previous owner's memory of what was replaced when. Skimmer lets you log the pool type, equipment, and any known ages right away, then track every water test and maintenance task from day one, so if you sell in ten years, you'll be the seller handing over a real record instead of a shrug.