This map is developed by Ian Webster. Comments or questions? Please reach out to @iwebst or taxmap@ianww.com.

The whole project is open-source and welcomes contributors! Each county California county is difficult to add, but we are making progress. Come join us. Thanks to Jake Highleyman for adding Yolo and Sacramento counties, Andy Lin for Napa, Solano, Fresno, and Butte, and Kevin Buchanan for SLO, and Derek Swingley for San Diego.

Map legend

• Red = single tax parcel that pays highest 10% of tax in your viewport
• Green = single tax parcel that pays lowest 10% of tax in your viewport
• Black = single tax parcel in the middle 80% of tax payments in your viewport
• Yellow = cluster of multiple properties

Other options

• View commercial properties only - only available for Alameda, LA, and Riverside counties