Cost guide · Plumbing
How much does plumbing leak repair cost in 2026?
Typical range
$175 – $650
visible leak (residential)
Visible plumbing leak repair runs $175–$650 in 2026 for accessible fixes (under-sink, exposed pipe, fixture replacement). Hidden leak repair (behind walls, under slabs) runs $1,500–$5,000 once detection + drywall + tile + pipe replacement are factored in.
Why the range is wide
The cheap leaks are accessible: a slip-coupling on an exposed pipe, a faucet cartridge swap, a P-trap replacement. The expensive leaks are hidden: slab leaks under foundation, in-wall pipe failures, behind-tile shower failures. Detection + access (drywall removal, tile work) often costs more than the actual pipe work.
Factors that affect price
Accessibility
Under sink, accessible basement pipe: $175–$400. Inside wall (drywall + repair): $400–$1,200. Slab leak (under foundation): $1,500–$5,000+.
Detection
Visible leak: included. Hidden leak requiring leak detection (acoustic, thermal, dye): $250–$500 detection + repair on top.
Pipe material
PEX repair: cheapest, fastest. Copper repair: standard. Galvanized: often a partial replacement is cheaper than continued repairs. Cast iron drain: most expensive — replacement often required.
Restoration
Drywall + paint after repair: $300–$700. Tile + grout: $500–$1,500 depending on match availability. Often handled by separate restoration contractor; plumber's quote excludes.
Insurance
Sudden pipe failure may be covered by homeowner's insurance. Slow leaks (e.g. dripping for months) typically aren't. Document the failure with photos and dates.
Regional variation
Slab-leak repairs are most common in southern markets (TX, FL, AZ) with high concrete-slab residential construction. The Northeast has more visible-pipe leaks in older basements but fewer under-slab failures. Re-pipe (full house) decisions become common in markets with extensive galvanized-pipe housing stock (mid-century homes pre-1970s).
Leak repair — frequently asked
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