Cost guide

Slab leak detection & repair cost in California

Last updated: 2026-09-15

Low

$1,500

Typical

$3,800

High

$8,000

Permit needed
Yes
Typical time
1–3 days
DIY vs. hire
Hire a licensed C-36 plumber

What affects the price

  • Access: crawlspace, slab, walls, or tight attics add labor.
  • Materials and fixture quality chosen.
  • Permit fees and required code upgrades.
  • Region: coastal metros typically cost more than inland areas.
  • After-hours, weekend, or holiday timing.

Questions to ask

  1. What is your CSLB license number, and can I see your written estimate?
  2. Does this price include the permit, parts, labor, and cleanup?
  3. What warranty do you offer on parts and labor, in writing?

Estimates are general ranges for informational purposes only and are not a quote, bid, or guarantee.

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