Harris County · over-assessed homes overpay year-round · next deadline May 15, 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 $803/year.
Houston homeowners save an average of $803/year when they appeal with strong comparable evidence. 87% of well-prepared protests succeed.
How property tax appeals work 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 deadline is May 15, 2027, or 30 days after your appraisal notice was mailed, whichever is later.
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
- May 15, 2027 (next protest window)
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.
Cities we cover in Harris County
Our protest kits work for homeowners across Harris County, including:
Ready to appeal in Harris County?
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Start Your Appeal →Texas protest guides
Harris County protest guides
See the full data behind these numbers in our Texas Over-Assessment Study.