What Insurers Check in a Florida 4-Point Plumbing Inspection

Every summer we get the same call from a different neighborhood: a homeowner in Hollywood, Coral Gables, or Fort Lauderdale opens a renewal notice, finds out their carrier wants a four-point inspection, and then finds out the plumbing section is the reason they're being non-renewed. In South Florida this happens more than anywhere else in the state, and it isn't bad luck. Our housing stock is old, our water is hard, and our heat and humidity age buried pipe faster than the same pipe would age in a cooler climate. If you own a home here that's more than twenty years old, it's worth knowing exactly what the inspector is looking at — because the plumbing section is short, blunt, and decides a lot.

What a 4-point inspection is, and when you'll be asked for one

A four-point inspection is not a home inspection. It's a narrow underwriting document covering four systems only — roof, electrical, HVAC, and plumbing — and its purpose is to tell an insurance company how likely your house is to generate a claim. A Florida-licensed inspector records, in Citizens' own wording, "the age, type and condition of the wiring, heating and plumbing systems, and roof." That's it. There's no negotiation and no context; whatever the inspector writes goes to an underwriter who has never seen your house.

The three pipe materials that get a South Florida home declined

1. Polybutylene supply pipe (installed roughly 1978–1995)

Polybutylene is a flexible gray, blue, or occasionally black plastic supply pipe, usually about half an inch or three-quarters of an inch, joined with crimped bands. It was installed in an enormous number of Florida homes between the late 1970s and the mid-1990s because it was cheap and fast to run. It also fails from the inside as chlorinated water degrades the material, and it tends to fail suddenly rather than by weeping first. That failure pattern is precisely what underwriters price against. Look at the pipe stubs under sinks, at the water heater connections, and where the main enters the house — if you see gray flexible plastic with metal crimp rings, you very likely have it.

2. Cast iron drain lines (homes built before about 1975)

Cast iron was the standard drain, waste, and vent material in South Florida homes built before roughly 1975, and it's why so much of the pre-1975 housing stock in Coral Gables, Miami Shores, Hollywood, and Fort Lauderdale's older neighborhoods is now dealing with the same problem at the same time. Cast iron is commonly rated for a 25-to-50-year service life; our heat, humidity, and high water table push real-world failures toward the low end of that range. The pipe rusts and scales from the inside, the bottom of the pipe channels out, and eventually it cracks or collapses under the slab. Unlike a supply leak, this one is quiet — the first symptom is often a recurring slow drain, a sewer smell, or a hairline crack in the floor tile, not a puddle.

Underwriters treat cast iron differently from polybutylene. Age alone doesn't automatically disqualify you; condition does. That's why many carriers will accept cast iron if a licensed plumber submits a camera scope showing the lines are intact. It's also why running that scope yourself, before the inspection, is the single highest-leverage thing a pre-1975 homeowner can do.

3. Galvanized steel supply pipe

Galvanized steel was used for water supply in many mid-century homes here. It corrodes internally, narrowing the pipe until flow drops noticeably, and the rust that flakes off shows up as discolored water at first draw. An inspector who sees visible rust staining at threaded joints, or who is told the home has original galvanized supply, will note it — and it reads to an underwriter as a leak waiting to happen. If you've been living with slowly declining water pressure across the whole house, that symptom and this inspection finding are usually the same story.

The fourth failure has nothing to do with pipe material

Citizens instructs that serious hazards or deficiencies — it names active leaks and evidence of leaks specifically — should be repaired before an application for coverage is submitted. This is the one people lose over needlessly. A dripping angle stop under a bathroom sink, a water-stained cabinet floor from a leak that was fixed two years ago but never documented, a rusted water heater pan, a running toilet: none of these are structural problems, all of them are cheap, and every one of them can put a note in the plumbing section that costs you the policy. An inspector cannot tell the difference between a stain from an old repaired leak and a stain from an ongoing one. They will write down what they see.

Find out what you have before the underwriter does

Once a four-point report is submitted, it's part of your file. You cannot un-ring that bell, which is why we push hard for homeowners to do their own reconnaissance first. In an afternoon you can answer most of it:

1. Identify your supply material. Open the cabinet under every sink and look at the two stub-outs feeding the angle stops, then check the connections at the water heater and where the main line enters the house. Gray or blue flexible plastic with crimp rings means polybutylene. Dull silver threaded metal means galvanized. Copper, white CPVC, or red/blue PEX are all materials carriers accept.
2. Pull your permit history. Miami-Dade, Broward, and Palm Beach counties all publish permit records online by address. A closed repipe permit from a previous owner is the fastest possible proof that the original polybutylene or galvanized is gone — and it's free to find.
3. Camera the drains if the home predates 1975. A licensed plumber runs a scope through a cleanout and shows you the inside of your own lines on a monitor. You'll see immediately whether you have intact pipe, moderate scaling, or a channeled-out bottom that's near failure.
4. Walk the house for water stains and drips. Under every sink, behind both sides of the water heater, around the base of every toilet, and at the washing machine box. Fix or properly document anything you find before an inspector photographs it.

What it takes to turn a decline into an approval

If polybutylene or badly corroded galvanized turns up, the answer is a repipe — replacing the supply lines throughout the house, typically in PEX or CPVC. In a single-story South Florida home on a slab, that usually means running new lines through the attic and dropping down to each fixture, which avoids breaking the slab entirely. For failing cast iron drains, options range from a spot repair on one bad run to a trenchless liner to a full replacement under the slab, and the camera scope is what decides which is honest for your house. We won't quote a full drain replacement on a house that needs one section fixed.

If you manage a condo association or a portfolio

For HOA boards and property managers the calculus is different, because the association's master policy and the unit owners' HO-6 policies interact. When a building's original supply risers are polybutylene or its stacks are original cast iron, individual owners start getting non-renewed one at a time, and the board is usually the last to hear about it. If you're already scoping plumbing for a structural integrity reserve study, have the same contractor document condition in a form an underwriter will accept — you're paying for the access either way, and a documented riser condition report has real value at renewal for every owner in the building.

What we do on a pre-inspection plumbing check

• Identify and photograph your actual supply material at multiple points, so there's no ambiguity about what you have.
• Camera-scope accessible drain lines and give you the footage, not just a verdict — you should be able to see what we saw.
• Pressure-test and walk every fixture connection, water heater, and shutoff for active leaks or evidence of past leaking, and fix the small stuff on the spot.
• Write the licensed-plumber letter in the form underwriters actually want, referencing permit numbers and materials.
• Tell you honestly when nothing needs doing. Plenty of pre-1975 houses scope clean, and "your cast iron is in good shape, here's the video" is a perfectly good outcome for a service call.
• Call us at 754-707-1774 — we cover Miami-Dade, Broward, and Palm Beach, and if you're facing a renewal deadline, say so when you call and we'll work to your date.