Waller ISD, Harris County and an unnamed water district
The Grand Prairie is in Harris County and Waller ISD. 2025 adopted rates per $100 (Harris County Tax Office): Waller ISD $1.0626, Harris County $0.38096, Flood Control $0.04966, Hospital $0.18761, Port $0.0059, Department of Education $0.0048, and Waller-Harris ESD 200 $0.10 where it levies. Water and sewer come from a district operated by Municipal District Services; get its name and adopted rate from the HCAD record.
- School homestead exemption: $140,000.
- A seller or builder must give the statutory MUD notice before you sign.
Before you make an offer: Pull the HCAD record for the lot, identify the water district and any WCID, and look up their adopted rates before estimating your payment.
Sources and tools: Harris Central Appraisal District, Harris County Tax Office: tax rates, Texas Comptroller: special district database, Estimate your monthly ownership cost
