Williamson County TX Data Center Subdivision & Infrastructure Standards
Williamson County, TX · Williamson County Commissioners Court, Amended Subdivision Regulations (adopted and effective March 4, 2025)
- Status
- In effect
- Took effect
- August 19, 2025
- Applies to
- Data center developers and operators seeking approvals in Williamson County, TX
- Enforced by
- Williamson County government
Williamson County Commissioners Court unanimously adopted amended subdivision regulations on March 4, 2025, adding turn-lane requirements, traffic-impact analysis mandates for larger developments, and water/floodplain provisions. These are general subdivision rules that apply to all large developments including data centers; there is no data-center-specific order requiring substation siting disclosure.
Who is protected: Williamson County, TX residents
Legal detail
Williamson County (limited by TX county zoning authority) used subdivision and road-infrastructure powers to require data-center developers to fund road improvements, file traffic-impact studies, and disclose substation siting plans before plat approval. Citation: Williamson County Commissioners Court order (2025).
Key facts
| Jurisdiction | Williamson County, TX |
|---|---|
| Level | County |
| Strength | Moderate |
| Enacted | August 19, 2025 |
| Citation | Williamson County Commissioners Court, Amended Subdivision Regulations (adopted and effective March 4, 2025) |
| Topics | data-center siting and energy |
| Agency page | Williamson County TX Data Center Subdivision & Infrastructure Standards — official source |
Related data-center siting and energy rules elsewhere
- Superior WI Data Center Moratorium (1-year) · In effect
- Dane County WI Hyperscale Data Center Moratorium · In effect
- Madison WI Data Center Moratorium (1-year) · In effect
- Manitowoc County WI Data Center Moratorium · In effect
- WA SB 5982 (Data Center / Clean Energy) · In effect
- Dayton OH data center moratorium (180-day, Apr 2026) · In effect
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