Property Tax Protest Katy TX: Your Complete Filing GuideProperty tax protests in Katy, Texas require filing with one of three different county appraisal districts—Harris County Appraisal District (HCAD), Fort Bend Central Appraisal District (FBCAD), or Waller Central Appraisal District (WCAD)—depending on your specific address.
Most Katy properties fall under Harris County (about 65%) or Fort Bend County (about 30%), with a small portion in Waller County.Key Facts for Katy Homeowners:Protest deadline: April 30, 2026 (or 30 days after receiving your notice)Median home value in Katy area: $425,000 (2025 data)Average assessment increase: 8-12% annually in recent yearsThree different counties = three different filing processesWhich County Appraisal District Covers Your Katy Property?Katy spans three counties, and knowing which one covers your property is essential for filing your protest correctly.Harris County (Majority of Katy)Most of central and eastern Katy falls under Harris County.
This includes areas near I-10 and the Grand Parkway, most of the Katy ISD core area, and neighborhoods like:Cinco RanchCross Creek RanchKelliwoodMason ParkPine Mill RanchCheck if you're in Harris County: Your property tax statement will show "Harris County" and list HCAD as the appraisal district.