What drives the price
The leak is under concrete, so you pay twice: once to find it precisely with acoustic and thermal equipment, and once to reach it. Breaking the slab means demolition, plumbing, re-pour and flooring repair. Rerouting abandons the buried section and runs new pipe overhead - often cheaper and less destructive, especially in Florida homes on slab foundations.
- Repair method - spot repair through the slab vs reroute vs whole-house repipe
- Hot side leaks (most common) vs cold side
- Flooring over the break - tile and wood cost far more to restore than carpet
- Whether water damage remediation is already needed
- Copper pipe age - one pinhole in 60s-80s copper usually means more coming
Should you DIY this or call a professional?
Call a pro. Confirming and locating a slab leak takes listening discs, pressure isolation and thermal imaging - guessing wrong means a hole in the wrong patch of your floor. What you can do first: watch the water meter with everything off. If the sweep hand moves, note it for the plumber; if the floor is warm in one spot, say so - that usually marks a hot-line leak and shortens detection.
Signs you need this repair
- Water bill jumping with no change in use
- Warm spot on the floor
- Sound of running water when everything is off
- Cracks appearing in tile or flooring
- Water meter spinning with all fixtures closed
How to not get overcharged
Get detection and repair quoted separately, and ask directly whether a reroute would be cheaper than opening the slab - some companies default to jackhammering because it bills more. If the house has had one slab leak in old copper, ask for a repipe price too: three spot repairs cost more than one repipe, and insurers sometimes cover access and restoration even when they exclude the pipe itself. Check your policy before paying anything.
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Red flags to watch for
- A repair quote before any detection work
- Refusing to give a reroute option or price
- Whole-house repipe pushed on a first small leak in newer pipe
- No mention of what floor restoration is included
Frequently asked questions
How much does it cost to repair a slab leak?+
Slab leak detection plus repair typically runs $1,500-$4,500, averaging near $2,500. Detection alone is $250-$500; rerouting the line above the slab often beats jackhammering the floor.
Can I repair a slab leak myself, or should I hire a professional?+
Call a pro. Confirming and locating a slab leak takes listening discs, pressure isolation and thermal imaging - guessing wrong means a hole in the wrong patch of your floor. What you can do first: watch the water meter with everything off. If the sweep hand moves, note it for the plumber; if the floor is warm in one spot, say so - that usually marks a hot-line leak and shortens detection.
How long does it take to repair a slab leak?+
1-3 Days Depending on Method. Scheduling and parts availability can extend the overall timeline beyond the hands-on work itself.
What makes the price of this job go up or down?+
Repair method - spot repair through the slab vs reroute vs whole-house repipe. Hot side leaks (most common) vs cold side. Flooring over the break - tile and wood cost far more to restore than carpet. Whether water damage remediation is already needed. Copper pipe age - one pinhole in 60s-80s copper usually means more coming.
How do I avoid being overcharged?+
Get detection and repair quoted separately, and ask directly whether a reroute would be cheaper than opening the slab - some companies default to jackhammering because it bills more. If the house has had one slab leak in old copper, ask for a repipe price too: three spot repairs cost more than one repipe, and insurers sometimes cover access and restoration even when they exclude the pipe itself. Check your policy before paying anything.