Harris County · Check the filing deadline on your notice
Severely over-appraised? A § 25.25(d) correction is still open until January 31, 2027 →
Harris County Property Tax Appeal Guide
Harris County homeowners can protest their property taxes by filing with the Harris Central Appraisal District (HCAD) before May 15, or by mid-July under Texas Property Tax Code Section 41.44(b) for late protests. Our analysis of 1,080,988 Harris County homes found 20.2% assessed above comparable sales, with average potential savings of $1,610/year.
Houston homeowners save an average of $1,610/year when they appeal with strong comparable evidence. 87% of well-prepared protests succeed.
How to protest property taxes in Harris County
Every Texas homeowner has a right to protest their assessed value under Texas Property Tax Code §41.41. In Harris County, protests are handled by the Harris Central Appraisal District (HCAD). The usual deadline is May 15 or 30 days after your appraisal notice was mailed, whichever is later. A weekend or legal-holiday deadline moves to the next regular business day. Confirm your district calendar and tax year.
HCAD accepts iFile online protests through its portal. Informal hearings are scheduled before formal ARB hearings, and most cases settle informally if you bring strong comparable evidence.
The strongest protests include 3-7 comparable sales from the last 12 months in your immediate neighborhood, adjusted for square footage, age, and condition. Houston-area assessors typically reduce values when presented with clear, recent comp data.
Harris County is one of the counties in our Texas Over-Assessment Study, where we ran millions of homes through the same unequal-appraisal comparison the HCAD uses. You can check your own address free in 30 seconds, or read our full methodology first.
File With
Harris Central Appraisal District
- Address
- 13013 Northwest Fwy, Houston, TX 77040
- Phone
- (713) 812-5800
- Website
- hcad.org
- Next deadline
- Check your notice and district calendar (notice and business-day rules apply)
Live · pulled from HCAD public records
$355,699,730 in projected annual overpayments across 133 Harris County ZIPs.
Most overassessed ZIPs in Harris County
Ranked by total annual projected overpayment. Drill into any ZIP for the top flagged homes.
Explore local property tax research
Research places associated with Harris County, Texas. City and ZIP boundaries can cross counties. Use the jurisdiction on your assessment notice for filing.
Cities and communities
ZIP research
Check your Harris County assessment
Check free first. The complete Audit is $49 once and provides filing-ready evidence when supported, or a valuation and county-record report when it is not. No percentage fee. 30-day money-back guarantee.
Check My Property →Texas protest guides
Harris County protest guides
See the full data behind these numbers in our Texas Over-Assessment Study.