Crawlspace flooding in Novato, CA
Water under the house is easy to miss and slow to leave. It raises humidity indoors, soaks floor framing and insulation, and can lead to mold. Here's what that looks like in Novato, what to do, and how to get connected with an independent, licensed local provider.
Crawlspace flooding in Novato: what we see
Many Novato homes are on slabs, but hillside homes in the west and older homes near Old Town and Novato Creek often have crawlspaces. During long storms, saturated soil and runoff from the hills can push water under homes. Low areas near the east side can also have high groundwater.
The local picture
Slopes and runoff. Where water comes from depends on where the house sits. Novato spans a broad valley with flat neighborhoods near Highway 101 and Novato Creek, rising to oak-covered hills on the west and north.
Creeks, tides and groundwater. Proximity to water affects groundwater and flood risk under the house. Novato is shaped by Novato Creek and its tributaries, and low areas near the bay edge on the east side.
Conditions vary a lot from street to street in Novato, so a provider should assess your specific home.
What to do right now
- Don't enter a flooded crawlspace if wiring may be wet or if the water could be sewage or floodwater.
- Photograph the water level from the access hatch.
- Check your sump pump and its power, if you have one.
- Fix obvious sources you can reach safely, like a disconnected downspout.
- Call for professional pumping and drying.
Want a local pro to take a look?It's free for homeowners and there's no obligation.
Novato checklist
- Check where downspouts discharge, and extend them away from the foundation.
- Make sure soil slopes away from the house.
- Check that the vapor barrier covers the soil and isn't torn.
- Look under the house after the first big storm of the season.
How a provider handles it
Providers pump out the water, remove wet insulation and damaged vapor barrier, clean framing (and treat it after contaminated water), and dry with dehumidifiers while monitoring moisture in the wood. Lasting fixes usually involve drainage work. For the full picture, read our complete guide and the deep dive on crawlspace flooding in Marin. We also have a storm-season article on gutters and drainage for hillside homes.
Before you hire anyone, check the license on the CSLB website. Here's how we vet providers.
Nearby towns and more for Novato
- Water Damage in Novato: our full local page
- Crawlspace flooding service
- Burst pipe water damage in Novato
- Sewage backup cleanup in Novato
- Storm and flood damage in Novato
- Appliance and water heater leaks in Novato
- Same problem nearby: crawlspace flooding in San Rafael, crawlspace flooding in Stinson Beach and West Marin, crawlspace flooding in San Anselmo
Frequently asked questions
Should I install a sump pump?
If groundwater regularly enters your crawlspace, a sump pump with battery backup may help. Fix surface drainage first.
Is water in the crawlspace covered by insurance?
It depends on the cause. A sudden plumbing failure is treated differently from groundwater or outside flooding. Check your policy.
Will this cause mold?
Damp crawlspaces are a common source of mold. Dry it out and fix the source. See our sister site's crawlspace mold guide.