California jurisdictions tighten scrutiny of data-center development
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San Francisco has unanimously approved an immediate 45-day moratorium on data-center approvals, while Oakland is considering a similar temporary pause. Santa Clara is launching a year-long interdepartmental review of the sector, as Los Angeles County considers a proposal to permanently bar large hyperscale facilities.
- San Francisco’s 45-day moratorium on data-center approvals has been approved; Oakland’s proposed pause remains under consideration.
- Santa Clara is beginning a year-long cross-department review, while Silicon Valley Power has not accepted new data-center applications since 2023.
- Regulatory treatment of power, water and environmental impacts is becoming a material site-selection factor for California data-center development.
- Los Angeles County is considering, but has not adopted, a proposal targeting large hyperscale data centers.
San Francisco has unanimously approved an immediate 45-day moratorium on data-center approvals while it develops a more comprehensive policy framework covering power, water, air quality, land use and community impacts.
The measure is part of a broader regulatory reassessment of data-center growth across California. In Oakland, City Council members are considering a separate 45-day temporary moratorium on new data-center construction. Unlike San Francisco’s measure, the Oakland proposal has not been approved.
Santa Clara is starting a year-long interdepartmental review of the environmental, water, power and social effects of data-center development. The city currently hosts 56 data centers, with two additional projects in development, according to the cited source. Silicon Valley Power stopped accepting new data-center applications in 2023.
The review takes place despite the sector’s fiscal contribution to the city: data centers contribute $35 million annually in taxes directly to Santa Clara’s general fund, according to the source. The forthcoming review does not yet specify which rules or restrictions, if any, could follow.
In Southern California, the Los Angeles County Board of Supervisors has received a proposal for a permanent ban on large hyperscale data centers while continuing to allow smaller facilities. The proposal’s status, timetable and definition of a hyperscale facility were not disclosed.
For operators and developers, the developments reinforce that confirmed power access, water availability and acceptable environmental parameters may increasingly determine site competitiveness. The regulatory pauses and reviews could increase permitting-stage delays and costs for new projects, particularly larger facilities serving AI workloads, and may shift demand toward locations with available infrastructure and more predictable approval frameworks.
The actions underscore how power availability, water use and environmental requirements are becoming direct regulatory constraints on data-center site selection in California. Even temporary permitting pauses and policy reviews could delay development, raise entitlement risk and shift demand toward jurisdictions with available grid capacity and clearer rules.
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