Round Rock, TX -- Roadway Impact Fees
City of Round Rock | Williamson County | Administered by: Transportation Department
Roadway impact fees in Round Rock are assessed under Texas Local Government Code Chapter 395. These fees are distinct from utility (water/wastewater) impact fees, which are administered under a separate program. This page covers roadway impact fees only.
Phase 4 Rates -- Final Plat After January 1, 2025
Authorized by Ordinance No. O-2023-378, approved November 16, 2023. Phase 4 rates apply to properties with a final plat recorded after January 1, 2025.
The roadway impact fee is calculated per service unit (su). A service unit is based on peak-hour traffic generation, road length, and national traffic standards -- it is not the same as a Living Unit Equivalent (LUE), which is used for utility impact fees. A single-family home is roughly four service units. The fee amount depends on the service area in which the property is located.
| Service Area | Residential (per service unit) | Non-Residential (per service unit) |
|---|---|---|
| Area A | $3,444 | $1,722 |
| Areas B, C, D | $2,291 | $1,145 |
Service area boundaries (four polygons: A, B, C, D) are available from the City of Round Rock GIS/IT Department at geohub.roundrocktexas.gov.
Roadway impact fees are due at building permit application.
Phase Schedule and Fee History
Round Rock's roadway impact fee schedule is structured in phases tied to the date the property's final plat was recorded. Phase 4 rates, effective January 1, 2025, represent a significant increase from prior phases.
| Phase | Final Plat Date | Residential (per su) | Non-Residential (per su) |
|---|---|---|---|
| Phase 4 (current) | After Jan. 1, 2025 | $3,444 (Area A) / $2,291 (B/C/D) | $1,722 (Area A) / $1,145 (B/C/D) |
| Phase 3 | After Jan. 1, 2024 | $1,507 | $753 |
| Phase 2 | Jan. 1, 2022 to Dec. 31, 2023 | $1,130 | $628 |
| Phase 1 | Before Jan. 1, 2022 | $753 | $502 |
Phases 1 through 3 are calculated as a percentage of the city's study maximum of $2,511 per base service unit (Phase 1 = 30% residential / 20% non-residential; Phase 2 = 45% residential / 25% non-residential; Phase 3 = 60% residential / 30% non-residential). Phase 4 rates were established under an updated analysis by Ordinance No. O-2023-378, approved November 16, 2023, and are not constrained by the original $2,511 maximum.
Properties subject to Phase 3 or earlier rates may have different obligations depending on final plat date. Verify with the City of Round Rock Transportation Department for any phase-determination questions.
Administering Authority
Roadway impact fees are administered by the City of Round Rock Transportation Department under Texas Local Government Code Chapter 395. The fee schedule is maintained at the department's official webpage.
City of Round Rock Transportation Department -- Roadway Impact Fee
Contact: Ed Polasek, Transportation Senior Planner -- 512-341-3167 -- epolasek@roundrocktexas.gov
Source
- Roadway Impact Fee -- City of Round Rock Transportation Department, roundrocktexas.gov. Phase 4 rates effective January 1, 2025. Accessed 2026-04-16.
Last verified by ZoneFee: 2026-04-16
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This page reflects roadway impact fee data sourced from official City of Round Rock documents as of the last-verified date above. ZoneFee does not guarantee that fee amounts are current at the time you read this page. Fee schedules change. Always verify current rates directly with the City of Round Rock Transportation Department before relying on this data for any financial decision. This page is for research and due diligence reference only -- it is not legal or financial advice.