Certified Data

The Protest Deadline for most property owners in Williamson County was May 15, 2023.

See your Notice of Appraised Value for your specific deadline.

Here are a few documents that might be helpful:

Additional Open Records File Layout
Certified/Supplement Roll File Layout
File Layout for the tables updated daily
Property Data Export File Layout

WCAD’s data is presented in various formats and file types. Click on a data type below to view all of the downloadable content available within it.

Certified Data Preliminary Data Historical Data GIS Data Agent Data

Name	Description	Type	Size	Posted	Download
Certified Appraisal Roll	Zip file contains appraisal roll report as of the last supplement	TXT	192MB	Monthly
Certified Assessment Roll Grand Totals	Document that contains the 2020 assessment roll grand totals as of certification	PDF	542KB	07/18/2020
Certified Property Data Export	Zip file contains five related tables as of the last supplement	TXT	71MB	Monthly
Ownership	The ownership table will be updated daily. This is a comma delimited owner table, the origional data may contain some commas that have been changed to pipe to allow this table as a CSV. For a txt file, save the csv and rename it as Owner.txt.	CSV	74 KB	Daily
A1 & Average Homestead	A1 and homestead totals will be updated at certification. Averages for entities with split jurisdictions are for Williamson County only.	XLSX	74 KB	Yearly
Partial Exemption List	Partial Exemption list as of certification per Tax Code 11.46.	XLSX	43 KB	Yearly