Slab leaks are one of the most expensive plumbing problems a Florida homeowner can face, and one of the easiest to miss. This guide covers what slab leak detection and repair typically cost, how to choose between a spot repair and a reroute, and what your homeowners insurance is likely to pay for.
Nationally, slab leak repair averages about $2,300, with most homeowners paying between $630 and $4,400 (HomeAdvisor data, 2026). The final number depends on how the leak is found, how it is fixed and how much flooring has to come up.
These are national estimates, not quotes. Flooring replacement, permits and water damage cleanup are usually extra.
PureFlo tip: Get the leak located before you agree to a price. A repair quote without detection is a guess.
Most Jacksonville homes sit on concrete slab foundations, with water lines running underneath. When one of those lines fails, the water goes into the soil first, so the early signs are easy to overlook:
Quick check: turn off every fixture and watch your JEA meter. If the leak indicator keeps moving, water is escaping somewhere. Our high water bill guide walks through the test.
Professional slab leak detection usually runs $150 to $600. A plumber isolates the hot and cold lines with a pressure test, then pinpoints the leak with acoustic listening equipment and, for hot lines, thermal imaging.
Accurate detection is what keeps the rest of the job affordable. It means a small opening in the floor instead of several exploratory ones, and it shows whether the pipe around the leak is sound enough for a spot repair or worn enough that rerouting makes more sense.
Ask for the detection results in writing, with photos. You will want them if you file an insurance claim.
Direct access (spot) repair. The plumber cuts a small opening in the slab at the leak, repairs the pipe and patches the concrete. It is usually the lowest-cost fix for a single leak on otherwise healthy pipe, but you will also pay to replace the flooring over the opening.
Reroute. The leaking section is abandoned and a new line, usually PEX, is run through the walls or attic. Nothing under the floor is disturbed, which makes it a good choice when the leak sits under tile, cabinets or hardwood.
Whole-home repipe. If the house has had more than one slab leak, or the original copper or galvanized pipe is near the end of its life, replacing the system can cost less over time than repeated repairs. See our repiping services.
Sometimes, but rarely all of it. Standard policies generally treat the job in three parts:
Florida policies vary widely, and some limit water damage coverage or carry separate deductibles. Read your declarations page, call your agent before you file, photograph the damage, and keep your plumber’s detection report and invoices.
This is general information, not insurance advice. Your policy wording decides what is covered.
A good plumber should be able to answer all five before work starts. If someone recommends a full repipe without testing the lines first, get a second opinion.
PureFlo Plumbing locates and repairs slab leaks across Jacksonville and Northeast Florida. Call for leak detection or request an upfront quote.
Nationally, slab leak repair averages about $2,300, and most homeowners pay between $630 and $4,400. Leak detection adds $150 to $600, and rerouting a line can run higher depending on how much pipe is replaced.
Many policies cover water damage from a sudden, accidental leak and sometimes the cost of breaking the slab to reach the pipe. Repairing the pipe itself and leaks caused by gradual wear are usually excluded. Check your policy or ask your agent.
Common signs include an unexplained jump in your water bill, the sound of running water with everything off, warm spots on the floor, damp flooring and a water meter that keeps moving when no water is in use.
A spot repair is often cheaper for a single leak on healthy pipe. Rerouting avoids breaking the floor and makes sense when the leak is under tile or cabinets, or when the pipe is aging and more leaks are likely.
Most spot repairs and simple reroutes are finished in one to two days. Larger reroutes or whole-home repipes can take longer, and flooring repair is a separate step.
Yes. Water escaping under the slab can wash out or soften the soil beneath it, which can lead to cracks and settling over time. Finding and fixing the leak early limits the risk.
Usually, yes. Water may be shut off for part of the day while the repair is made, and the work area will be closed off.
Common causes include aging copper pipe, pipe rubbing against concrete or gravel, water chemistry, high water pressure, poor original installation and soil movement under the slab.
Plumbing repairs and reroutes often require a permit in Jacksonville and surrounding counties. A licensed plumber will know when one is needed and pull it for you.
PureFlo Plumbing provides slab leak detection and repair across Jacksonville, the Beaches, Orange Park, St. Johns and Nassau County. Call 904-803-0495 to schedule.
Tell us what you are seeing and we will get back to you quickly. For active leaks, call 904-803-0495.
