California County Hazard & Property Tax Guides
Hazard exposure and tax bills vary a lot from county to county. Each guide covers the hazard zones that show up most often in that county's NHD reports, along with typical effective tax rates, Mello-Roos and supplemental tax notes.
Los Angeles County
~1.16% effective tax rate · 5 hazard zone types
California's largest county by population, and the most diverse hazard profile in the state.
Los Angeles County guideOrange County
~1.09% effective tax rate · 5 hazard zone types
Heavy Mello-Roos coverage in Irvine and the newer Tustin and Great Park developments.
Orange County guideSan Diego County
~1.13% effective tax rate · 5 hazard zone types
Fire zone designations expanded significantly after the 2003 Cedar and 2007 Witch Creek fires.
San Diego County guideRiverside County
~1.17% effective tax rate · 5 hazard zone types
Heavy Mello-Roos in newer Temecula, Murrieta, and Menifee developments.
Riverside County guideSan Bernardino County
~1.15% effective tax rate · 5 hazard zone types
The largest county by area in the contiguous United States, spanning valley, mountain, and desert hazard profiles.
San Bernardino County guideSanta Clara County
~1.24% effective tax rate · 5 hazard zone types
California's highest property values combined with significant seismic exposure.
Santa Clara County guideVentura County
~1.10% effective tax rate · 5 hazard zone types
The 2017 Thomas Fire reshaped fire hazard mapping across the county.
Ventura County guideSacramento County
~1.14% effective tax rate · 4 hazard zone types
Flood risk is the dominant disclosure item in Sacramento County transactions.
Sacramento County guideAlameda County
~1.23% effective tax rate · 5 hazard zone types
The Hayward Fault is considered one of the most dangerous faults in the United States.
Alameda County guideSan Francisco County
~1.18% effective tax rate · 4 hazard zone types
The 1989 Loma Prieta earthquake caused severe liquefaction damage in the Marina District.
San Francisco County guideCheck any California address free
Run a free preliminary hazard screen against live state and federal GIS maps, then order the full NHD report when you're ready.
Run a free hazard check