You've found the home. The roof looks solid, the AC is newer, and the electrical panel passed muster. Then the insurance company gets the 4-point inspection report — and the plumbing section is what kills the deal. It happens more often than most Florida homeowners expect, and it's almost always a surprise. If you're buying, selling, or trying to renew a policy on a home built before the 1990s, understanding what a 4-point inspection reveals about your plumbing could save you thousands of dollars and a serious headache.
Why Plumbing Shows Up on a 4-Point Inspection at All
A 4-point inspection covers exactly four systems: the roof, HVAC, electrical, and plumbing. Insurance carriers require this report — not a full home inspection — because they want a quick snapshot of the systems most likely to cause a major loss. Plumbing earns its spot on that list for one simple reason: water damage is one of the most expensive and most common homeowner insurance claims in Florida.
A slow leak behind a wall, a corroded pipe fitting, or a water heater that's well past its expected lifespan can quietly cause tens of thousands of dollars in damage before anyone notices. Insurers want to know what they're taking on before they write a policy — and a licensed inspector's report gives them that picture.
If you want a deeper look at how all four systems interact on this report, our complete four-point inspection guide walks through the whole process in plain English.
What a 4-Point Inspector Actually Looks at in Your Plumbing
During the plumbing portion of a 4-point inspection, I'm evaluating the overall condition and material of the supply and drain lines, the water heater, and any visible signs of leaks or damage. Here's a breakdown of what I'm looking for:
Pipe Material — This Is Often the Biggest Issue
The type of pipe running through your home matters enormously to insurers. Some materials are considered high-risk and may result in a policy denial or a significant surcharge. The most common problem materials I see on the Treasure Coast and throughout South Florida include:
- Polybutylene (PB) pipe — Gray plastic pipe used widely from the late 1970s through the mid-1990s. It degrades from the inside out and is prone to sudden failure. Many carriers will not insure a home with active polybutylene supply lines.
- Galvanized steel pipe — Common in homes built before the 1960s. It corrodes from the inside, restricting water flow and eventually leaking. Heavily corroded galvanized pipe is a red flag on any 4-point report.
- Cast iron drain lines — Not always a dealbreaker, but older cast iron can crack and corrode. I note the visible condition and any signs of active deterioration.
- CPVC and copper — Generally acceptable to most carriers when in good condition. Copper is preferred, though even copper can develop pinhole leaks in Florida's acidic water conditions.
Water Heater Age and Condition
Most water heaters carry a manufacturer's warranty of 6 to 12 years. Many insurers want to see a water heater that is within its expected service life — typically under 10 to 15 years, though this varies by carrier. I check the age (stamped on the serial number label), look for rust, corrosion, or active leaks at the connections, and confirm the temperature-pressure relief (TPR) valve is present and properly piped.
A water heater sitting in a garage with no drain pan, or one that's 18 years old and showing rust stains on the floor beneath it, will absolutely show up in my report — and it should.
Visible Leaks and Water Damage Evidence
I inspect under sinks, around toilets, at supply line connections, and at the water heater for any active drips or staining that suggests a past or ongoing leak. Even a slow drip at a shutoff valve gets noted. Insurers treat active leaks as an immediate concern.
Drain, Waste, and Vent System
Where accessible, I look at drain lines for signs of improper repairs, disconnected vents, or visible damage. A drain line that's been patched with mismatched materials or a vent stack that's been improperly modified can raise questions about the overall quality of maintenance on the home.
The Pipe Materials That Will Almost Certainly Cause an Insurance Problem
Let me be direct: if your home has polybutylene supply lines, you need to know that before you apply for insurance — not after. Many carriers in Florida will decline to write a new policy on a home with PB pipe, full stop. Others may offer coverage with an exclusion for water damage, which largely defeats the purpose of having the coverage.
If a 4-point inspection reveals polybutylene or severely corroded galvanized pipe, the most practical path forward is usually a full re-pipe before applying for coverage — not after a denial. Getting ahead of it saves time, money, and frustration.
Homes in Fort Pierce, Port St. Lucie, Stuart, Vero Beach, and Palm Bay that were built between roughly 1978 and 1995 are the most likely candidates for polybutylene. If you're buying in that era and in those areas, ask your inspector specifically about pipe material before you close.
How to Prepare Your Plumbing Before a 4-Point Inspection
If you know a 4-point inspection is coming — whether for a new policy, a renewal, or a home sale — here are practical steps you can take beforehand:
- Find out what your pipes are made of. A plumber can tell you quickly, or you can look under sinks and in the garage for gray flexible plastic pipe (polybutylene) or orange-ish CPVC.
- Check the age of your water heater. The manufacture date is encoded in the serial number — most manufacturer websites have a decoder tool. If it's over 12 years old, budget for replacement.
- Fix known drips before the inspection. A leaking shutoff valve under the kitchen sink is a $20 fix. On an inspection report, it's a line item that raises questions.
- Clear access to the water heater and main shutoff. Inspectors need to see these clearly. Boxes stacked in front of the water heater slow things down and can limit what I can document.
- If you have a well, make sure the pressure tank and pump are accessible. Well systems get noted on 4-point reports too.
What Happens After the Report — And Who Handles What
My job as a licensed Florida home inspector is to document what's there accurately and completely. I give you a clear, honest report. What happens next — whether your carrier accepts the report, requires repairs, or adjusts your premium — is between you and your insurance company.
If a plumbing issue on your 4-point report leads to a coverage dispute, a denial, or a policy condition you don't understand, please talk to a licensed insurance agent or a licensed public adjuster. Those professionals are the right people to help you navigate the insurance side of the equation. I can give you the documentation; they can help you act on it.
Ready to schedule your 4-point inspection in Fort Pierce, Jensen Beach, Jupiter, Melbourne, Sebastian, or anywhere on the Treasure Coast? Book your inspection online and I'll get you a clear, insurer-ready report fast — usually within 24 to 48 hours of the visit.