Buying a House With a Pool This Fall? Here’s What We Find When We Inspect It

The pools we inspect during fall home purchases in Frisco have three things in common: the filter is clogged, there's a heavy load of leaves in the water, and the whole thing looks more like a swamp than a pool. That's not bad luck — it's what happens to a pool during the months a house sits on the market in autumn. If you're closing on a home with a pool this fall, assume the pool has been coasting, and get it looked at before you own the problem.

Why Pools on the Market Look Like This

A pool being actively used by a family gets attention. A pool attached to a house that's listed, staged, shown, and sitting empty does not. The seller has moved out or is moving, service may have been cancelled to save money, and nobody is swimming in October anyway so nobody notices.

Add Frisco's fall leaf drop to a pool nobody's clearing, and a few weeks produces exactly what we find:

The filter is clogged. Months of fine debris and organic material loading up with nobody cleaning or backwashing it. A clogged filter restricts flow, which drops circulation, which means the chemicals that were added aren't distributing properly.

Heavy leaf load. Not a few leaves — a volume of them, floating and sunk. We've pulled six large bags out of a single pool this season.

It looks like a swamp. Green or murky, can't see the bottom, slick walls. The combination of no circulation plus decomposing leaves releasing phosphates — algae nutrient — produces exactly this, fast.

What That Means for the Buyer

Here's the thing to understand: a swamp-looking pool is usually the cheap part. A green pool is a recovery job with a known price. What matters for a buyer is what the swamp is hiding.

You cannot assess a pool you cannot see into. Underneath the green water and leaf layer, the things that actually cost money are invisible:

• Plaster condition — staining, etching, rough patches, or damage from a startup that was never done properly
• Equipment condition — whether the pump is the right size and actually healthy, whether the filter housing is intact, whether anything is cracked from a previous freeze
• Leaks — a pool losing water is nearly impossible to confirm through murky water and a leaf layer
• Foreign objects and blockages in the plumbing
• Whether the equipment was installed correctly in the first place — we've found salt cells plumbed backwards and pools built with no real circulation design

That's the risk. You're not buying a green pool; you're buying an unknown pool with green water in front of it.

What We Check on a Fall Pool Inspection

The same assessment we run on any takeover, which is a full look at what you're inheriting rather than just a cleaning:

Overall condition — surfaces, waterline, staining, what's actually on the floor once the debris is out.

The pump — sound, prime, correct sizing for the pool, leaks, signs of having run dry or run restricted.

The filter — type, condition, pressure, and whether it's been maintained or just backwashed. A DE filter that's been backwashed for years with no DE added back has been running effectively bare.

The chemistry — full panel, not just chlorine. On neglected pools we routinely find CYA driven sky-high by tab over-reliance, which locks up chlorine effectiveness and sometimes can only be fixed by draining and diluting.

Freeze exposure — in October, whether the equipment is set up to survive the coming winter at all.

What to Do Before You Close

Get the pool assessed separately from the home inspection. General home inspectors look at pools at a surface level. They are not pool technicians and they will not catch a backwards-plumbed salt cell, a bare DE filter, or a pump that's wrong for the system.

Don't accept "it just needs a cleaning." Sometimes that's true. But a clogged filter, a leaf load, and swamp water is a condition that developed over months, and conditions that develop over months tend to have taken something with them.

Factor recovery into your number. A green-to-clean recovery starts at $399, a filter clean is $130, and if the equipment took freeze damage or the plaster is compromised, those are separate and larger. Knowing that before closing is leverage; finding out after is just a bill.

Then get it on service. Once the recovery is done and the equipment is sorted, a pool stays fine with someone watching it. The pools that end up looking like this are the ones nobody was watching — which, for a house on the market, was nobody's job.

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