Water Damage Restoration in San Mateo.
From San Mateo Park to Hayward Park and Shoreview, we handle water damage across the city every day. Same-day water damage, mold, sewage, and crawlspace cleanup in San Mateo and across the SF Peninsula.
Full restoration services.
Water Damage
Burst pipes, overflows, and floods — extraction, drying, and rebuild.
ExploreMold Remediation
Containment, HEPA filtration, removal, and verification.
ExploreSewage Cleanup
Category 3 black water handled safely under IICRC S500.
ExploreCrawlspace Cleanup
Standing water, sewage, mold, and vapor barriers.
ExploreSan Mateo's older housing stock sees frequent pipe failures and crawlspace moisture. We're based minutes away in Burlingame — often on-site in San Mateo fast, 24/7.
Licensed, local, 5.0-rated.
CSLB #1043942. A 5.0 rating across 114 reviews. Honest, upfront pricing and thorough documentation for your insurance claim — serving San Mateo homeowners for over 25 years.
Water damage help in San Mateo.
All Action Water Damage works San Mateo's neighborhoods — San Mateo Park, Baywood, Aragon, Hayward Park, and Shoreview — every week. Older Baywood and San Mateo Park homes have deep crawlspaces, while Shoreview sits near the bay with a high water table. Because we're based minutes away in Burlingame, we can usually be on-site in San Mateo fast, any hour.
Much of San Mateo's early-1900s to mid-century housing stock (ZIP 94401–94403) means crawlspace water, aging supply lines, and mold are common. We extract the water, dry the structure, remove mold, and rebuild — then prepare the photos, moisture readings, and itemized estimate you need for your insurance claim.
Neighborhoods and ZIP codes we cover.
We handle water damage in every part of San Mateo: ZIP 94401 (downtown and Central San Mateo), 94402 (the hills and San Mateo Park side), 94403 (Hillsdale, Beresford, Laurelwood) and 94404 (the bayside and Foster City border). That includes San Mateo Park, Baywood, Aragon, Hayward Park, Shoreview, Hillsdale, Beresford and Laurelwood.
Because we are based in Burlingame, a few minutes up the road, San Mateo is part of our regular route, not a far-off service area.
Common water problems in San Mateo homes.
Crawlspace water and sewage. Older raised-foundation homes often have cracked or failed waste and supply lines under the floor. A broken line can fill the crawlspace for weeks before anyone notices the smell. See our crawlspace cleanup and sewage cleanup pages.
Water heater and supply-line leaks. A slow leak behind a wall or under a floor spreads quietly. Read about a San Mateo water heater leak we handled.
Mold after water. Mold can start within 48 hours of a leak in a damp, closed-in space. Here is a San Mateo water damage and mold job, and our mold remediation process.
Commercial and office floods. We also work on San Mateo offices, shops and apartment buildings. See commercial water damage.
What happens when you call.
1. We find the source. We locate where the water is coming from and stop it from spreading.
2. We extract and contain. Standing water comes out first. Sewage or mold areas are sealed off.
3. We dry with readings. We place drying equipment and take moisture readings until the structure is dry.
4. We document and rebuild. You get photos, readings and an itemized estimate. We are a licensed general contractor (CSLB #1043942), so we can do the repairs too.
Photos from a San Mateo water damage job.
Real photos from our crew on a San Mateo job: checking moisture, setting up containment, opening the wall to find the source, and drying the floor.
More jobs on our recent jobs page.