Buying an Older Home in Southwest Florida: The Plumbing Checklist

Start with the build year, then confirm it

The year built on the listing is a starting point, not proof. Plenty of 1960s Fort Myers houses were repiped in the 1990s, and plenty of 1980s Cape Coral houses still have every inch of their original supply line. What you want is the build year plus a record of what’s been replaced since.

So we work in two passes. First, the era tells us what materials were most likely installed. Second, we look for evidence of what’s actually in the walls today: the pipe stubbing out under sinks, the material at the water heater, the main line where it enters the house, the cleanout outside, and the permit history. When those two passes disagree, the permit record usually settles it.

Southwest Florida’s housing stock came in waves. A lot of Cape Coral, Lehigh Acres, Port Charlotte and North Fort Myers was platted and sold in the late 1950s and 1960s, and building ran hard through the 1970s and 80s. Then came the 2000s boom, which put up a huge share of what’s standing in Estero, Bonita Springs, Lehigh and Cape Coral today. Each wave used different pipe.

Homes built in the 1950s to the 1970s

Supply pipe

The oldest houses in this group may still have galvanized steel supply lines. Galvanized rusts from the inside out, so the pipe can look fine while the inside diameter shrinks to a fraction of what it was. The tell is weak pressure at fixtures, especially on the hot side, and brown water after the system sits. By the late 1960s and 1970s, copper was more common. Original copper of that age can still work, but our water and fittings take a toll, and pinhole leaks in 50-year-old copper are common enough that we treat it as near the end of its life.

Drains

Cast iron. In slab-on-grade Florida homes the main drain runs under the floor, and decades of sewer gas eat the top of the pipe while the bottom wears down. We see cracked hubs, scaled interiors that catch paper, and channel rot where the bottom of the pipe is basically gone. Our cast iron drain guide covers the failure signs in detail.

Water heater

Nothing original survives here. The question is how old the current unit is and whether it was installed under a permit with a proper relief valve discharge line. Older houses often have the heater in a garage or a utility closet that was built for a smaller tank.

Septic or sewer

Many homes in this era were built on septic. Some have since been connected to central sewer, some haven’t, and some areas are in the middle of a utility expansion. In Cape Coral, the city’s Utilities Extension Project has been converting neighborhoods from septic and wells to city service in phases. If a home is still on septic in a planned expansion area, the buyer may inherit an assessment and a hookup. Our Cape Coral UEP guide explains how that works.

Homes built from the late 1970s to the mid 1990s

Supply pipe

This is the polybutylene window. Polybutylene was a gray (sometimes blue or black) plastic supply pipe installed widely from roughly 1978 through the mid 1990s, and Florida got a lot of it. It breaks down from chlorine in the water and tends to fail at fittings without warning. Look under the sinks and at the water heater for gray flexible pipe, and check the meter area for where the main enters. Many insurers won’t write a policy with active polybutylene in the house, which is why it comes up on almost every 4-point for this era. Our polybutylene and 4-point guide goes deeper.

Some homes from this period have CPVC or copper instead. CPVC from the 1980s and early 90s can get brittle with age and heat, so we handle it carefully during any repair.

Drains

By this point most new construction used PVC or ABS plastic drains, though some late-1970s homes still went in with cast iron. Mixed systems are common: plastic in the house, cast iron for part of the main under the slab, or a remodeled bathroom tied into older pipe. Plastic drains from this era usually hold up, but we still find belly sags, root intrusion at joints, and offsets where the ground settled.

Water heater and septic

The water heater has almost certainly been replaced, maybe more than once. Septic is still common in parts of Lehigh Acres, North Fort Myers, Alva and unsewered sections of Charlotte County. A 30-to-45-year-old septic tank and drainfield needs its own inspection, separate from anything a plumber or home inspector does.

Homes built in the 2000s

Supply pipe

Most 2000s homes have CPVC or PEX supply lines, with CPVC more common in the early part of the decade. Both are generally sound, but there are a few things to watch. CPVC can crack at fittings when it’s old or was installed with poor support. Some homes from the late 1990s into the 2000s used Kitec, an aluminum-layered PEX system with brass fittings that has a history of fitting corrosion; it usually has orange or blue pipe and stamped fittings.

The drywall problem

Homes built or renovated during the mid-2000s boom are where imported reactive drywall showed up in Florida. It gave off sulfur gases that blackened and corroded copper, including copper plumbing stubs, AC coils and wiring. If you see black, sooty copper at a water heater connection or under a sink in a home of this era, ask whether the house was ever tested or remediated.

Drains, water heater, sewer

PVC drains, usually in good shape unless the slab moved or roots got in. The original water heater, if it’s still there, is likely past its expected service life. Most 2000s subdivisions were built on central sewer, but large parts of Lehigh Acres and some Cape Coral lots built in that decade went in on septic and wells, so confirm it rather than assume.

Quick reference by era

Treat this table as probability, not fact. A permit record or a look under the sink beats it every time.

What a general home inspection covers, and what a sewer camera adds

A good general home inspector runs water at the fixtures, checks for visible leaks, looks at the water heater, notes the supply material where it’s exposed, and flushes toilets. What they generally don’t do is look inside the drain lines. Underground and concealed piping is outside the standard scope of a general inspection, and that’s exactly where the expensive surprises in older Florida homes live.

A sewer camera inspection runs a camera through the main drain from a cleanout, recording the condition of the pipe from the house to the tap at the sewer main or to the septic tank. On a camera we can see:

• Scale buildup and channel rot in cast iron
• Cracked or separated joints
• Bellies where the pipe sags and holds water
• Root intrusion
• Offset joints from settling
• Where a previous repair tied plastic into old cast iron

For any home built before about 1980, or any home with slow drains, a gurgling toilet or a sewer smell, we’d book the camera before the inspection period ends. Details on our sewer camera inspection page. If there’s no accessible cleanout, plan for that; a camera can sometimes go in through a toilet flange, which takes more time.

The 4-point inspection and why it matters for closing

In Florida, insurers commonly require a 4-point inspection on older homes before they’ll write a homeowners policy. It covers the roof, electrical, HVAC and plumbing. The age cutoff depends on the carrier, but homes around 25 to 30 years old and up should expect one.

The plumbing section asks about supply and drain materials, the water heater’s age and condition, and any active leaks. The items that cause trouble most often are polybutylene supply lines, galvanized supply, a water heater with no visible age or a leaking relief valve, and visible leaks under sinks. If the carrier won’t bind coverage, the lender usually won’t fund, so a bad 4-point can stall a closing. Order it early in the inspection window so there’s time to react.

Check the permit history before you trust the listing

Lee, Collier and Charlotte Counties, plus cities like Cape Coral, Fort Myers, Bonita Springs and Naples, all keep online permit records searchable by address. Look for:

• A repipe permit, which tells you the supply lines were replaced and roughly when
• Water heater permits, which date the current unit
• Sewer connection or septic abandonment permits
• Remodel permits for kitchens and bathrooms
• Post-storm repair permits

If the listing says the house was repiped and there’s no permit, ask who did the work. Unpermitted plumbing isn’t automatically bad, but it hasn’t been inspected, and an insurer or a future buyer may ask the same question. Also be careful with which jurisdiction you search. A Fort Myers mailing address can sit in unincorporated Lee County, and the records will be with the county, not the city.

Flood history and Hurricane Ian

Hurricane Ian made landfall in Lee County on September 28, 2022, as a Category 4 storm, and its surge flooded large parts of Fort Myers Beach, Sanibel, Pine Island, Matlacha, Cape Coral, Fort Myers and Punta Gorda. Many homes that took water have been repaired. Some were repaired well, with permits. Others got new drywall and paint over problems that didn’t go away.

For plumbing, a flooded home raises a few specific questions:

• Did salt water reach the water heater, well pump, softener or pressure tank? Saltwater exposure corrodes equipment fast, and units that came back on after the storm can fail months later.
• Was the septic system flooded? A saturated drainfield and a tank full of floodwater may need to be pumped and checked.
• Did debris or sand get into the sewer lateral? We’ve seen mains that drained fine until a camera showed silt and debris settled in the line.
• Were drain lines and fixtures replaced, or just cleaned?

If a home in a flood zone was substantially damaged, the FEMA 50 percent rule may have required the repair to bring the structure into compliance with current floodplain rules, which can mean elevating it. Ask whether a substantial damage determination was made. Florida also now requires residential sellers to give buyers a written flood disclosure about known flooding and flood insurance claims, so read it carefully. Our hurricane plumbing checklist covers storm prep for after you move in.

Questions to ask the seller

Florida courts have long held that sellers of residential property must disclose known defects that materially affect value and aren’t readily observable. That only helps if you ask. Put these in writing, through your agent:

• Has the house been repiped? When, with what material, and by whom? Is there a permit?
• How old is the water heater, and has it ever been replaced after a leak?
• Is the home on central sewer or septic? If septic, when was it last pumped and inspected?
• Is the water from a utility or a well? If a well, when was the pump or pressure tank replaced?
• Have there ever been slab leaks, and where were they repaired?
• Has a main drain ever backed up? Was any section of cast iron replaced or lined?
• Did the home take water in Ian or any other storm? Were there insurance claims or FEMA assistance?
• Is there a water softener or filtration system, and is it owned or leased?
• Are there any open or expired plumbing permits?

Agents can send buyers our way directly; see our page for real estate agents.

Negotiating plumbing repairs

We don’t negotiate deals, but we do write up what we find so buyers and agents have something solid to negotiate with. A few general points from the plumbing side.

Video beats opinion. A sewer camera recording showing channel rot or a broken joint is much harder to dispute than a line in an inspection report saying drains were slow. Ask for the footage and a written description of where the problems sit and how far from the cleanout.

Separate the urgent from the eventual. An active leak, a polybutylene supply system that will block insurance, or a broken main are closing issues. A 10-year-old water heater that still works is a budgeting issue. Mixing the two weakens your list.

Think about who controls the repair. A seller-arranged fix gets done before closing, but the buyer has less say over the scope and the materials. A credit lets the buyer choose, which matters for larger jobs like whole-house repiping where PEX versus copper and the access plan through finished walls are real decisions. Whichever way it goes, ask for permits and final inspections on anything done before closing.

What we look at when you call us in

When a buyer or agent asks us to look at a home during the inspection period, we focus on the plumbing items a general inspection can’t fully answer. That usually means identifying the supply material in several places, checking static water pressure, dating the water heater from its serial plate, finding and opening the main cleanout, and running a camera through the main drain. If the home has a well, we check the pump and pressure tank behavior. If it’s in an area slated for sewer, we flag that too.

You get a written summary and the camera footage. To set up a visit, use our request form or call during office hours, Monday to Friday, 8am to 5pm.