How much does it cost to fix a slab leak in Phoenix, AZ?
Slab leak repair in Phoenix, AZ typically costs $1,500–$4,000 for a spot repair after detection, with leak detection itself running $150–$400. A full repipe to bypass the slab runs $4,000–$12,000. Detection matters more than repair price: a company that pinpoints the leak electronically cuts a small hole; one that guesses cuts several.
Likely causes
- Copper pipe corrosion — The classic slab leak — pinhole leaks in copper lines under the foundation, common in homes 20+ years old.
- Shifting soil / foundation movement — Movement stresses rigid pipe until a joint or line cracks.
- High water pressure — Sustained pressure above ~80 psi accelerates wear on every fitting in the house.
What you can check yourself
- Confirm it's real: watch the water meter with everything off — if the dial moves, water is going somewhere.
- Check the obvious first: running toilets and irrigation leaks mimic slab leaks and cost far less.
- Call your insurer early — slab leak *damage* is often covered even when the pipe repair isn't.
Typical cost
Typical in Phoenix, AZ: detection $150–$400; spot repair $1,500–$4,000; repipe $4,000–$12,000. Get the detection report in writing before authorizing demolition.
When to call a pro
Warm spots on the floor, the sound of running water with everything off, or a sudden water-bill spike — book detection now; slab leaks erode the soil under your foundation.
Plumber pros in Phoenix, AZ
- First Choice Plumber · 1030 S 3rd St #182, Phoenix, AZ · +14807643624
- Viking Pump Service · 286 E Monroe St, Phoenix, AZ · +16238727867
- Plumbing Masters · 40 N Central Ave #1400, Phoenix, AZ · 6023310001
- Monsoon Plumbing · US Government, 1 N Central Ave, Phoenix, AZ · +14805704457
- $59 Rooter & Plumbing Service · 530 E Mcdowell Rd Ste 303, Phoenix, AZ · 6022901448
- Drainiology · 208 W Portland St, Phoenix, AZ · +14802569226
- MR Plumber Phoenix Inc · 101 N 1st Ave Ste 21, Phoenix, AZ · (602) 932-7251
- Affordable Phoenix Plumbing · 916 W Moreland St, Phoenix, AZ · 6025291282
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Data by Servik — verified local pros from official license records and public sources. Cost figures are typical ranges, not quotes; a pro's written estimate is the real number.