What crawlspace water damage repair costs on the Peninsula.

By Carlos · All Action Water Damage · Updated June 2026

Every job is different, but here are honest ranges for Peninsula homes so you know roughly what to expect before you call anyone.

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Typical ranges

What goes into the price.

$500–$2,000

Water extraction & dry-out

Pumping standing water and drying the crawlspace with equipment over several days.

$1,500–$5,000

Vapor barrier replacement

Removing ruined sheeting and installing new 6-mil reinforced barrier, sealed.

$2,000–$6,000+

Mold remediation

Containment, removal of affected material, and treatment when mold is present.

$3,000–$10,000+

Sewage (Category 3)

Black-water cleanup under the house — full PPE, removal, sanitizing, disposal.

Varies

Insulation & wood repair

Replacing fallen insulation and repairing rotted joists or subfloor as needed.

Typical job

$5,000–$8,000

A common full crawlspace job lands here — but many are covered by insurance, so you may pay far less.

Good news

Most sudden crawlspace water damage is an insurance claim. We give you a clear estimate up front and document everything for your carrier.

FAQ

Why is crawlspace work priced this way?

Cost depends on how much water, whether there's sewage or mold, how tight the access is, and how much material (barrier, insulation, wood) needs replacing.

Will insurance cover it?

If it's sudden and accidental (a burst line, an overflow), it's usually covered. We document it and prepare the estimate so you can file.

How long does a crawlspace job take?

Extraction is same-day; full drying typically runs 3–5 days, with any rebuild after that. We give you a timeline up front.

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(650) 504-1987

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