This is not a Natural Hazard Disclosure statement. Open state data, explained; flood and dam zones are not covered. Details

Is Castro Valley in a fire hazard severity zone?

63.3% of Castro Valley is mapped in a fire hazard severity zone, and 47.8% in High or Very High, where the seller disclosures apply.

Very High zone8.9% of the area

High zone38.9%

Moderate zone15.5%

Earthquake fault zone3.3%

Liquefaction zone8.8%

Landslide zone24.1%

Not evaluated for seismic hazards0.1%: a zero above proves nothing there

Fires recorded since 19500

Land area17.1 sq mi

Median home value (2019-2023)$1,058,200

Flood and dam zonesnot covered

Castro Valley ranks 584 of 1050 California places for the share of land in High or Very High zones.

In land area, that is 1.51 sq mi Very High, 6.64 sq mi High, 2.65 sq mi Moderate, out of 17.07 sq mi. Its High and Very High share of 47.8% is 4.8 points below the 52.5% of Alameda County. The median home value of $1,058,200 is 0% above the county median of $1,057,400. Among 20 places in the county it ranks 3 for exposure; Sunol ranks first at 54.1%. Seismic maps cover Castro Valley with fault zone 3.3%, liquefaction 8.8%, landslide 24.1%.

Zones differ from street to street: check the address above. In Alameda County overall, 24.7% of the land is Very High.

No fire perimeter since 1950 touches Castro Valley in the state record. Small fires are often missing from it.

Earthquake fault zone maps

Castro Valley touches the Hayward, San Leandro maps.

Nearby places compared

Ashland, 2.7 mi southwest: 0.0% High or Very High, 0 fires, median home $695,300
Fairview, 2.8 mi southeast: 18.4% High or Very High, 0 fires, median home $915,100
Cherryland, 3.1 mi southwest: 0.0% High or Very High, 0 fires, median home $654,200
San Lorenzo, 4.3 mi southwest: 0.0% High or Very High, 0 fires, median home $833,800
Norris Canyon, 4.8 mi northeast: 98.2% High or Very High, 0 fires, median home $2,000,001
San Leandro, 5.2 mi west: 1.9% High or Very High, 0 fires, median home $813,600
Hayward, 6.1 mi south: 17.1% High or Very High, 1 fire, median home $820,700
Union City, 8.0 mi south: 48.7% High or Very High, 0 fires, median home $1,058,200
San Ramon, 8.1 mi northeast: 11.5% High or Very High, 0 fires, median home $1,359,100
Danville, 8.7 mi northeast: 12.4% High or Very High, 1 fire, median home $1,583,300
Moraga, 9.3 mi north: 74.7% High or Very High, 0 fires, median home $1,597,600
Oakland, 9.6 mi northwest: 12.2% High or Very High, 2 fires, median home $924,700

All of Alameda County