San Joaquin County CA 45-day data center urgency moratorium
San Joaquin County, CA — Board of Supervisors Unanimously Adopts a 45-Day Urgency Moratorium on Land Use Approvals for New Large Data Centers (Oct. 6, 2026)
San Joaquin County, CA · San Joaquin County, CA 45-day urgency data center moratorium (Oct. 6, 2026)
- Status
- In effect
- Took effect
- October 6, 2026
- Applies to
- Data center applicants in unincorporated San Joaquin County, CA
- Enforced by
- San Joaquin County Community Development Department
San Joaquin County, California paused general plan and zoning amendments, use permits, variances, maps and building or grading permits for new large data centers in unincorporated areas for 45 days. Supervisors adopted the urgency ordinance 5-0 on Oct. 6, 2026 and may extend it while staff study water, power, noise and safety impacts. Small data infrastructure for hospitals, schools, businesses, telecom, emergency communications and utilities is exempt.
Who is protected: Residents of unincorporated San Joaquin County, CA
Legal detail
San Joaquin County (CA) interim urgency ordinance (Gov. Code 65858) adopted 5-0 Tuesday Oct. 6, 2026: 45-day moratorium on general plan/zoning amendments, use permits, variances, parcel and final maps, building and grading permits for qualifying data centers, unincorporated county. Exempt: smaller-scale data infrastructure serving hospitals, schools, individual businesses, telecom facilities, government emergency communications, public utilities. Staff to report within six months; extension possible. No current large AI data center proposals in unincorporated county. NOT ESTABLISHED: ordinance number; size threshold; expiry date as stated (45 days computed ~Nov. 20, 2026).
Key facts
| Jurisdiction | San Joaquin County, CA |
|---|---|
| Level | County |
| Strength | Moderate |
| Enacted | October 6, 2026 |
| Citation | San Joaquin County, CA 45-day urgency data center moratorium (Oct. 6, 2026) |
| Private right of action | No, agency enforcement only |
| Topics | data-center siting and energy |
| News report | San Joaquin County halts new data center approvals amid water, power concerns — Stocktonia (Oct. 7, 2026) |
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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