Bay Area data centers face new development restrictions as San Francisco, Oakland and San José examine the infrastructure and environmental requirements of large computing facilities. San Francisco is considering extending its temporary moratorium, Oakland has approved a longer restriction, and San José officials have proposed pausing new approvals while additional standards are developed. The measures could affect future AI infrastructure projects across the region.
Key Takeaways
- San Francisco adopted a 45-day data center moratorium in October 2026 and is considering a 10-month, 15-day extension
- Oakland extended its data center moratorium through October 5, 2027
- San José officials proposed temporarily pausing approvals until new development standards and community-benefit requirements take effect
- San Francisco’s Planning Department identified electricity capacity, water consumption, land use and environmental impacts as major considerations
- The restrictions differ by city, with separate approval processes and regulatory requirements
Bay Area Cities Review Data Center Development Restrictions
San Francisco, Oakland and San José are taking different approaches to regulating data centers as demand for computing infrastructure increases. Local officials are examining whether existing electricity networks, water systems and land-use regulations can accommodate additional facilities.
Data centers support cloud services, artificial intelligence applications, digital storage and other computing activities. Large facilities require substantial electricity for servers, networking equipment and cooling systems, making their development relevant to municipal infrastructure planning.
San Francisco adopted a temporary moratorium on October 16, 2026, while Oakland introduced a similar restriction on October 6. Both cities have since considered longer review periods, with Oakland approving an extension on November 10.
San José has proposed a temporary pause while officials finalize development standards, rather than adopting the same restrictions as its neighboring cities.
Data center proposals are also being evaluated elsewhere in the region. Separate Bay Area fairground projects have involved preliminary discussions about constructing computing facilities alongside parking and emergency-response infrastructure.
These projects remain subject to individual reviews, and the restrictions adopted by San Francisco and Oakland do not automatically apply to developments in other municipalities.
San José Proposes Temporary Pause on Data Center Approvals
San José Mayor Matt Mahan and Councilmembers Pamela Campos, David Cohen, Peter Ortiz and Domingo Candelas announced a proposal on November 12 to temporarily pause new land-use approvals for data centers and other large electricity-consuming projects.
The proposal is intended to prevent projects from receiving approval before the city implements development standards and community-benefit requirements.
San José officials have been working on regulations addressing electricity consumption, utility infrastructure, environmental performance and reporting obligations. Proposed requirements include carbon-neutral electricity, wastewater monitoring and regular reporting of water and energy consumption.
The City Council is scheduled to consider the temporary approval pause on November 17, while the proposed development standards are expected to return for council consideration in December.
Unlike an indefinite prohibition on data center construction, the proposed measure would temporarily prevent approvals until the applicable standards are adopted and implemented.
The proposal remains under consideration. Its practical effect will depend on the council’s decisions and the final language of the city’s regulations.
San Francisco Considers Extending Its Data Center Moratorium
San Francisco’s Board of Supervisors approved a 45-day citywide moratorium on data center development on October 16, 2026. The temporary restriction is scheduled to expire on November 30 unless an extension is adopted.
Supervisors have introduced legislation to extend the moratorium by another 10 months and 15 days, allowing additional time to evaluate potential impacts and develop appropriate regulations.
On November 10, the San Francisco Planning Department released an assessment examining existing data centers, potential development locations and infrastructure considerations.
The review addresses electricity demand, transmission capacity, water consumption, wastewater systems, air quality, backup generators, noise and environmental justice.
It also identifies three previously approved standalone data center projects:
- 365 Main Street, also identified as 160 Harrison Street, in the Rincon Hill area
- 200 Paul Avenue in Bayview Hunters Point
- 320–400 Paul Avenue in Bayview Hunters Point
The assessment examines how these facilities relate to surrounding land uses and communities with elevated environmental exposure.
Officials have identified possible regulatory options, including additional utility assessments, restrictions on standalone facilities in certain districts and requirements addressing backup power equipment.
The report does not establish that existing facilities are responsible for significant environmental damage, nor does it recommend a permanent prohibition on new data centers.
San Francisco’s proposed moratorium extension remains subject to legislative approval.
Oakland Extends Data Center Moratorium Through October 2027
Oakland initially adopted a 45-day emergency moratorium on October 6, 2026, temporarily restricting approvals for the development or operation of data centers.
On November 10, the City Council approved an extension lasting an additional 10 months and 15 days. The restriction is scheduled to remain in effect through October 5, 2027.
The extended period allows municipal staff to assess potential infrastructure impacts, consult utility providers, gather community input and develop regulatory recommendations.
Oakland’s review includes electricity demand, environmental impacts, land-use compatibility and possible amendments to existing planning regulations.
The moratorium restricts specified new approvals while these assessments continue. It does not establish a permanent citywide ban or require existing facilities to cease operations.
Electricity Demand and Grid Capacity Influence Data Center Reviews
Electricity availability is a central consideration in the region’s regulatory discussions.
Data centers require continuous power for computing equipment, network systems and cooling operations. Their electricity requirements can affect the availability of transmission and distribution capacity for other uses, including housing, commercial development and public facilities.
San Francisco’s November assessment examines data center electricity capacity and the potential effects of additional facilities on the city’s power infrastructure.
The report estimates that a hypothetical 50-megawatt data center could consume as much electricity as more than 25,000 new homes. It also identifies approximately 1,000 megawatts of transmission capacity serving San Francisco, compared with peak demand of roughly 800 megawatts.
However, the difference between those figures does not necessarily represent electricity capacity available for additional data centers. Infrastructure constraints and projected demand from other users must also be considered.
Potential Electricity Assessment Requirements
San Francisco’s Planning Department has identified several regulatory options for future development.
One proposal would require data centers exceeding a specified electricity-demand threshold to submit assessments prepared or approved by their utility providers.
These assessments could identify available capacity, anticipated grid impacts, necessary infrastructure upgrades and expected service timelines.
The report uses 5 megawatts as an illustrative threshold, although no specific threshold has been adopted through this recommendation.
Officials are also considering whether cumulative data center electricity demand should be limited relative to the city’s available transmission capacity.
Such requirements could provide more detailed information about the infrastructure needed to support proposed projects before development approvals are issued.
Water Consumption and Wastewater Infrastructure
Water use is another consideration in the assessment of large computing facilities.
Some data centers rely on water-based cooling systems to regulate equipment temperatures. Actual water consumption depends on facility size, cooling technology, operating conditions and environmental factors.
San Francisco’s Planning Department estimates that properties associated with existing data centers recorded maximum monthly water consumption of approximately 1.05 million gallons during the April 2023 to April 2026 review period.
The figure is based on utility billing records rather than measurements exclusively documenting data center operations. Water usage associated with other activities at the same properties may be included.
The assessment also discusses wastewater discharge, sewer capacity and the potential trade-offs between water consumption and electricity requirements.
City officials are considering how additional reporting requirements and performance standards could support future development reviews.
Land Use and Environmental Considerations
Data center development can require substantial building space, electrical infrastructure, cooling equipment and backup generators.
In San Francisco, officials are examining how these requirements interact with existing residential neighborhoods, commercial districts and industrial land.
The Planning Department’s assessment identifies potential conflicts involving land availability, housing development and industrial uses. It also considers whether standalone data centers should be restricted in certain districts or near major transit stations.
Environmental justice is another part of the review.
The city’s existing standalone data centers include facilities in SoMa and Bayview Hunters Point, areas identified through environmental justice initiatives.
Officials are examining possible effects associated with backup generator emissions, noise and air quality, particularly in communities already experiencing environmental burdens.
The assessment recommends further evaluation of these concerns and opportunities for affected communities to participate in future planning decisions.
Community Benefits and Development Standards Under Review
The three cities are considering different mechanisms for regulating future data center projects.
San José’s proposals include community-benefit requirements and environmental performance standards. San Francisco is reviewing additional utility assessments, land-use restrictions and possible limits on cumulative electricity demand. Oakland is using its extended moratorium to study regulatory options and collect public input.
These approaches reflect the different stages of municipal review and the infrastructure conditions within each city.
For developers, future approval requirements may involve more detailed information about anticipated electricity usage, water consumption, utility improvements, backup power systems and effects on surrounding properties.
The final requirements will depend on the regulations adopted by each municipality.
Frequently Asked Questions
Are New Data Centers Banned Across the Bay Area?
No. San Francisco and Oakland have adopted temporary citywide moratoriums, while San José is considering a separate approval pause. These measures do not establish a uniform regional ban, and their application depends on local regulations.
When Will San Francisco’s Data Center Moratorium Expire?
The existing 45-day moratorium is scheduled to expire on November 30, 2026. Supervisors are considering an additional 10-month, 15-day extension, which has not yet received final approval.
How Long Will Oakland’s Data Center Restrictions Remain in Effect?
Oakland approved an extension on November 10, 2026, keeping its temporary data center moratorium in effect through October 5, 2027.
What Requirements Could Apply to Future Data Center Projects?
Potential requirements include utility capacity assessments, electricity and water reporting, wastewater monitoring, backup generator standards, environmental reviews and community-benefit provisions. The specific requirements will depend on regulations adopted by each city.
