Open 24 hours, every day
Napa Flood Cleanup, From Napa Abajo to Browns Valley
River and creek flooding, split pipes, sewage and wet raised basements under older houses, plus the rebuild, handled by our North Bay crew from Petaluma.
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Tell us what happened and we'll call you back. In a hurry? Call (844) 623-3946.
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Napa, CA
Who cleans up flood and water damage in Napa?
Napa is covered by RestoreX’s North Bay office at 450 Lakeville Street in Petaluma, about 25 road miles from City Hall. Our crew pumps out standing water, takes moisture readings in floors and walls, dries the building, removes ruined materials and rebuilds, whether the water came from the Napa River, Napa Creek or a leak under the sink.
About 61% of Napa’s 32,141 homes were built before 1980, and close to 9% before 1940, according to the Census Bureau’s 2020-2024 American Community Survey. In the Napa Abajo-Fuller Park Historic District, many single-story houses stand on raised basements, and a little over 4% of homes citywide are mobile homes. In both, water from a flood or a broken line tends to end up under the floor, which is where crawlspace cleanup and drying come in.
Housing: U.S. Census ACS 5-year estimates. Distance is approximate.
About Napa
Where does flooding in Napa come from?
Most of it comes from the Napa River and its tributary Napa Creek, which join in downtown Napa before the river continues to San Pablo Bay. A 2017 Water Board fact sheet counts 27 major floods in the city over 120 years. The river’s gauge near Napa peaked at 37,100 cubic feet per second on February 18, 1986.
The New Year’s Eve flood of 2005 pushed that gauge to 29,600 cubic feet per second, flooded all of downtown and destroyed about 1,000 homes countywide, with the Napa River/Napa Creek Flood Protection Project only 40% built. More than two-thirds of county voters had approved its Living River design in 1998, and the county flood control district and the Army Corps of Engineers started work in 2000 on 6.9 miles of river and 0.67 mile of creek, including six higher, longer bridges and underground dry bypasses for Napa Creek (Water Board fact sheet). The Oxbow Bypass carried water for the first time in January 2017, and Napa did not flood that winter.
Shaking brought its own kind of water damage. The magnitude 6.0 South Napa earthquake struck at 3:20 a.m. on August 24, 2014, centered south of the city (USGS event page). A report to the City Council that September counted 156 red-tagged and 1,398 yellow-tagged structures, 144 water main repairs and a damaged Browns Valley water tank. The largest of the fires that followed was at Napa Valley Mobile Home Park, where a broken main was spewing water at the entrance and four homes were destroyed.
Storms keep testing the same streets. The National Weather Service logged roadway flooding on Golden Gate Drive in December 2022 and November 2024, and the Trancas Street bridge near SR-121 flooded in February 2025 (NWS storm reports). Two ZIP codes, 94558 and 94559, cover nearly all of the city, from Westwood west of Highway 29 to Alta Heights, the higher ground east of the river.
Permits & rebuilding
Does a Napa water damage repair need a permit?
Finish work doesn’t, but pipe replacement does. Napa exempts painting, tiling, carpeting, cabinets and countertops, and stopping a leak is exempt too. Replacing a defective concealed pipe counts as new work and needs a permit. Water heater and furnace change-outs are over-the-counter permits with no plans, and minor interior remodels can go through Express Review.
Napa repairs: steps to take first
- Reach the Building Division at 1600 First Street or 707-257-9540; the counter is open Monday through Thursday, with the last submittal at 3:30 PM.
- From November 3, 2026, permits of every type, from building to utilities and fire, are filed in the city’s NapaON system, which replaces TRAKiT.
- In Zone AE, a rebuilt lowest floor, basement included, must sit at least 1 foot above base flood elevation; the Floodplain Management Program at Public Works answers at 707-257-9520.
- Repair costs count toward Napa’s 50% substantial improvement test cumulatively across ten years, so earlier work adds up.
- A NapaSan permit comes before any work on an on-site sewer lateral, and for a backup NapaSan asks you to call 707-258-6000 ext. 9 before anyone else.
Services in Napa
Which RestoreX services fit Napa's flood and quake history?
Water damage restoration covers river, creek and plumbing water, and sewage cleanup covers backups from the lateral. The 2014 earthquake brought broken mains, damaged chimneys and fires at the same time, so we also offer fire and smoke cleanup, board-up and reconstruction in Napa.
FAQ
Napa Questions
Is downtown Napa still in the FEMA flood zone?
A county supervisor wrote in March 2017 that downtown Napa had been removed from FEMA floodplain mapping after nearly $400 million of flood project work. Other parts of the city can still be mapped, under maps that took effect August 3, 2016. Napa’s Class 7 rating in FEMA’s Community Rating System cuts flood insurance premiums 15% inside the high-risk zone and 5% outside.
What should owners of Napa's older homes check after a leak or flood?
The space under the floor. Many single-story houses in the Napa Abajo-Fuller Park Historic District, 23 blocks and 308 buildings between Fuller Park and the river, sit on raised basements where water collects out of sight. PEER engineers also flagged brick and stone chimneys as weak points in 2014, which is worth knowing after any strong shaking.
Who provides water and sewer service in Napa?
The City of Napa Water Division serves more than 85,000 people using State Water Project water from the North Bay Aqueduct, Lake Hennessey and Milliken Reservoir. Sewer service comes from the Napa Sanitation District, or NapaSan, which maintains mains and laterals up to the property line. From the property line to the house, the lateral belongs to the owner.
Which RestoreX office sends crews to Napa?
Our North Bay office in Petaluma is about 25 road miles from Napa City Hall, a drive of close to 40 minutes with no traffic. Our East Bay office in Hayward is more than twice as far, which is why Napa is handled from Petaluma. Call (844) 623-3946 with the address and a description of the damage.
Nearby
Which North Bay cities near Napa do we also serve?
Our Petaluma crew covers the towns around Napa too. Vallejo sits down Route 29, Fairfield is reached by Route 12 on the way to I-80, and our office city, Petaluma, has a page alongside Santa Rosa. Choose one below, or call (844) 623-3946 about any address in between.
Talk to RestoreX
Napa River water, or a pipe that let go?
Phone (844) 623-3946 and describe the damage; our Petaluma office takes it from there.