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Williamson County, Texas

How to Appeal Property Taxes in Williamson County (2026)

Appeal Deadline

May 15 (or 30 days after notice date, whichever is later)

County AssessorAppeal Forms

Overview

Williamson County, north of Austin, has approximately 250,000 parcels covering fast-growing cities like Round Rock, Cedar Park, Georgetown, and Leander. The Williamson Central Appraisal District (WCAD) reassesses every property annually. With the Austin metro's continued expansion northward, Williamson County has seen some of the most dramatic home value increases in Texas. WCAD offers an Express Review option for recently purchased properties where the appraised value exceeds the purchase price.

Step-by-Step Appeal Process

1

Receive your Notice of Appraised Value from WCAD (typically mailed in April)

2

Review your property details at wcad.org

3

File online via WCAD Online Appeals at onlineappeals.wcad.org (requires Online Passcode from appraisal notice)

4

Or mail Form 50-132 to WCAD at 625 FM 1460, Georgetown, TX 78626

5

If you recently purchased, check if Express Review applies (appraised value exceeds purchase price)

6

Attend informal hearing — available in-person, by phone, or video

7

If unresolved, proceed to a formal ARB hearing

What Evidence Do You Need?

3-5 comparable sales within 1-2 miles, sold within the last 12 months
Photos showing property condition issues
Your purchase contract (if recently bought and price is below appraised value)
Independent appraisal from a licensed appraiser
Evidence of unequal appraisal compared to neighbors

Common Reasons for Successful Appeals

Austin metro expansion has led to aggressive WCAD valuation increases
Comparable sales show lower values than WCAD's assessment
Market cooling since 2022 not fully reflected in assessments
New construction with initial assessments set too high
Property condition issues not reflected in the assessment
Incorrect property details in WCAD records

Tips for Success

1If you recently bought your home for less than the appraised value, WCAD's Express Review can quickly adjust your value
2WCAD supports phone and video hearings — request these options when scheduling
3The Austin metro market varies significantly by city — Round Rock, Cedar Park, and Georgetown each have distinct trends
4Check WCAD's market analysis data at data.wcad.org for useful comparable information
5Not all properties are eligible for online filing — check your notice for an Online Passcode

Frequently Asked Questions

Check Your Assessment in Williamson County

Enter your address to see if you're overpaying and get a professional appeal packet for $49.

Free Assessment Check

This guide is for informational purposes only and does not constitute legal advice. Deadlines and procedures may change. Always verify current information with your county assessor.