Open Data Initiative

Los Angeles County Office of the Assessor

Welcome to the new Los Angeles County Assessor Open Data Portal

“The new Open Data Portal includes the largest set of assessment data ever published online in the United States. I promised to make transparency and accountability synonymous with my Administration, and the Open Data Portal is a major leap forward in ensuring that the public’s data is easily accessible. The Open Data website will strengthen public engagement and improve accountability while reducing costs and promoting innovation.”

Signature of Jeffrey Prang


New Open Data Portal

The Open Data Portal provides the public with free and easy access to a wide variety of county data, while also instituting appropriate security safeguards for confidential or legally restricted information. This includes the annual assessment roll from the Assessor’s Office that provides detailed parcel information and assessment valuations for more than 2.3 million property records throughout Los Angeles County.

The Portal also includes tools that make it easy to filter, sort, view, and download data in a wide variety of formats. In addition, the Portal offers customizable charting and GIS mapping capabilities that allows the public to easily aggregate and display information visually.

The Open Data Portal provides a continually expanding variety of County data that is freely available to the public in an easy-to-use system. The Portal allows users to download archived and indexed information from the Office of the Assessor, enabling them to produce their own reports for free instead of requesting costly and time-consuming reports.

Open Data Portal Free and Easy Access to County Data
Open Data Portal
Free and easy access to County data.