Plumbing repairs that change a home sale price

Every home sale on an older Southwest Florida house passes through the same fifteen minutes: the inspection report lands, the buyer’s agent highlights three items, and the price everyone agreed on a week ago becomes a negotiation again. Plumbing produces more of those items than any other system, because so much of it is out of sight in the slab, the attic, and the ground.

This guide is for both sides of that conversation. It covers the plumbing findings that actually move a sale price here, how they get found, and how the repair-or-credit decision tends to go.

The findings that change the number

• Cast iron drains. Homes built before roughly 1975 in Fort Myers, Cape Coral, and Naples have cast iron drain lines under the slab. After fifty years they rust from the inside, channel along the bottom, and eventually collapse. A camera inspection is the only way to know the condition, and a failing main line is one of the largest repair items in a Florida home sale.
• Polybutylene supply pipe. Gray plastic pipe from the late 1970s through the mid-1990s. Insurers here commonly refuse to write a policy with it in place, which turns a plumbing finding into a financing problem. It is replaced on sight with a whole-house repipe.
• Water heater age. A tank past ten years, or with no legible date, gets flagged by the inspector and often by the buyer’s insurer on the 4-point inspection. It is a small item that shows up in almost every negotiation.
• Unpermitted work. A water heater, a bathroom addition, a repipe, or a pool heater with no permit in the county records. It surfaces in the permit search and becomes a title, insurance, and lender question all at once.
• Septic condition. In Lehigh Acres, Alva, Buckingham, and parts of eastern Estero and Golden Gate, the septic tank and drain field are the sewer. A tank that has not been pumped in years, or a field that is soft and green after rain, is a large item.
• Slab leak history. A disclosed slab leak, a patched floor, or a water bill that jumped last year raises the question of whether it was one leak or the first of many. Buyers ask to see the repair invoice and the permit.
• Backflow and irrigation. A backflow device with no current test on file, or a well-fed irrigation system tied into the house without one, comes up on utility records and in the inspection.

How buyers find them

Three sources, and a careful buyer uses all three:

1. The general inspection. The inspector runs every fixture, checks under every sink, reads the water heater label, looks for pipe material at the water heater, and notes stains and patches. A general inspector cannot see inside the drain line or the slab.
2. The permit search. Lee and Collier County permit records are public, and an address search shows every permit ever pulled and its status. A water heater with a 2019 date on the label and no permit is a five-minute find.
3. Specialty inspections. A sewer camera on an older home, a septic inspection where there is a tank, a 4-point for the insurer, and a plumber’s walkthrough when the general inspection raises a question. These are where the large items are confirmed or ruled out.

What sellers should do first

The seller who finds the problem before the buyer does controls how it gets handled. That is the whole argument for a pre-listing plumbing inspection on a home built before the mid-1990s:

• Run a camera through the main drain. If the cast iron is fine, you have a video that says so, and the buyer’s inspector will not be the one to discover it. If it is not, you know before you set a price.
• Identify the supply pipe material and put it in the disclosure. Polybutylene hidden behind a water heater is found every time.
• Pull the permit history for your own address. If something was done without a permit, you have time to address it before a contract is on the clock.
• Fix the small, certain items. A running toilet, a corroded hose bib, a missing water heater pan, a slow drain. Cheap to fix now, and they inflate the buyer’s list if left.
• Get written estimates for the large items from a licensed plumber. A number on paper turns a vague fear into a line in the negotiation.

Repair or credit

Once a large item is on the table, the question is whether the seller fixes it or the buyer takes a credit and handles it after closing. The pattern here, without any figures, tends to go like this:

• Sellers fix items that are quick, permitted, and inspectable before closing, like a water heater replacement, because a credit for a small job invites a bigger ask.
• Buyers take credits for large jobs like a repipe or a drain line replacement, because they want to choose the plumber, the material, and the timing, and because a seller under contract pressure tends to take the fastest fix rather than the best one.
• Lenders and insurers sometimes decide. If a policy cannot be bound with polybutylene in place, or an appraisal is contingent on a repair, the fix happens before closing regardless of preference.

Whatever the arrangement, get it in writing with the permit and the final inspection named, and get the invoice and the permit closeout into the file at closing.

What a homeowner can check alone

Reading a water heater label, looking at the pipe at the water heater, pulling your own permit history, and running every fixture in the house are all things you can do in an afternoon before you call anyone. The camera, the septic inspection, the 4-point, and any repair on the list above are licensed work, and a buyer or seller who tries to save that step usually pays for it in the negotiation.

If you are listing or buying an older home in Lee or Collier County, send us the year it was built, the inspection report if you have one, and a photo of the pipes at the water heater. We will tell you which items are worth a closer look before anyone signs.