Water Damage Restoration in San Jose, CA
San Jose by the numbers: 56 flood report days from 2016 to 2025, 2 freezing nights a year, 8 federal disaster declarations since 2016. Below: first steps, the records, California insurance rules and costs.
Updated October 31, 2026
First Steps for Water in a Home in San Jose
- Plumbing leak: shut the main water valve (burst pipe steps). Flooding: stay out until the water stops rising (flooding steps).
- Stay clear of wet outlets and cords.
- Photograph the damage, then call your insurer.
San Jose Flood Record
NOAA has 139 flood and flash flood reports for San Benito and Santa Clara counties from 2016 to 2025, on 56 separate days; January had the most.
At the San Jose 3.5 ENE gauge, January is the wettest month with 3.8 inches on average.
| Month | Flood report days | Normal precipitation (in) |
|---|---|---|
| January | 21 | 3.8 |
| February | 14 | 3.5 |
| March | 5 | 2.7 |
| April | 2 | 1.5 |
| May | 1 | 0.7 |
| June | 0 | 0.2 |
| July | 0 | 0 |
| August | 0 | 0 |
| September | 0 | 0.1 |
| October | 1 | 0.9 |
| November | 4 | 1.9 |
| December | 8 | 3.6 |
| County | Flood report days | Reports |
|---|---|---|
| Santa Clara County | 55 | 119 |
| San Benito County | 7 | 20 |
Freezing Nights in San Jose
San Jose averages 2 nights a year at or below 32°F (San Jose station). NOAA counted 17 winter storm, ice or extreme cold days in San Benito and Santa Clara counties from 2016 to 2025.
Storms and Disasters in San Jose
San Benito and Santa Clara counties were named in 8 federal weather or fire declarations since 2016 (OpenFEMA).
Notable NOAA storm reports
- December 25, 2025: Thunderstorm wind, 90 mph gust (Santa Clara County)The PG&E station on Mount Umunhum reported a gust of 90 mph.
- January 27, 2021: Flood (San Benito County)New Idria Rd from Panoche Valley to 20 plus miles south, road completely washed out. Exact time of damage unknown, estimate sent by public works.
- January 6, 2016: Tornado, EF0 (San Benito County)At 8:50 AM PST on the morning of January 6, 2016, a weak tornado touched down in a field between Highway 156 and Orchard Road approximately 7 miles north of Hollister, CA in San Benito County.
- January 6, 2016: Tornado, EF0 (San Benito County)A weak (EF-0) tornado touched down in a field between Highway 156 and Orchard Road approximately 7 miles north of Hollister, CA in San Benito County.
Federal disaster declarations
- April 3, 2023: Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And MudslidesSevere Storm, FEMA DR-4699
- March 10, 2023: Severe Winter Storms, Flooding, Landslides, And MudslidesFlood, FEMA EM-3592
- January 14, 2023: Severe Winter Storms, Flooding, Landslides, And MudslidesFlood, FEMA DR-4683
- January 9, 2023: Severe Winter Storms, Flooding, And MudslidesFlood, FEMA EM-3591
- August 22, 2020: WildfiresFire, FEMA DR-4558
- August 21, 2020: Scu Ligtning Complex FireFire, FEMA FM-5338
San Jose Housing at a Glance
Census figures for the city of San Jose (American Community Survey, 2020 to 2024): 345,066 housing units, a median build year of 1976, 60% built before 1980, 37% before 1970, 56% owner occupied.
California Insurance Rules for Water Claims
California insurers must acknowledge a claim notice within 15 calendar days unless they pay in that time (California Department of Insurance, property claims adjusting guide (2026)).
Claim problems in California go to the California Department of Insurance.
Flood damage needs a separate flood policy, which typically starts 30 days after purchase (FloodSmart). Look up San Jose flood zones on FEMA's flood maps.
Restoration Cost Guide for San Jose
| Typical range (national) | Cost |
|---|---|
| Most jobs | $1,305 to $5,707 |
| Sewage, per sq ft | $7 to $7.50 |
| Average insurer payout, water or freeze claim | $15,400 |
Sources: Bob Vila, May 2023; III, 2019 to 2023.
Areas Served Around San Jose
The same 24/7 line covers the San Jose metro area, including:
- San Jose
- Sunnyvale
- Santa Clara
- Mountain View
- Milpitas
- Palo Alto
- Gilroy
- Cupertino
- Morgan Hill
- Hollister
- Campbell
- Los Gatos
Other California city guides
- Los Angeles water damage restoration
- San Francisco water damage restoration
- Riverside water damage restoration
- San Diego water damage restoration
- Sacramento water damage restoration
- Fresno water damage restoration
- Oxnard water damage restoration
- Stockton water damage restoration
- Bakersfield water damage restoration
- Vallejo water damage restoration
- Modesto water damage restoration
- Visalia water damage restoration
- Santa Rosa water damage restoration
Questions
When is the first freeze in San Jose?
The median first night at or below 32°F is December 25 and the median last is January 2 at the San Jose station (NOAA normals, 1991 to 2020).
How fast does mold start?
Dry wet materials within 24 to 48 hours (EPA).
Sources: NOAA Storm Events, NOAA normals, OpenFEMA, Census ACS, California Department of Insurance, property claims adjusting guide (2026), EPA mold guide.