Palo Alto Escalates Fight Over SFO Expansion Plan

City files new technical and legal documents to appeal San Francisco's approval of airport development plan.

Jan. 30, 2026 at 11:55am by Ben Kaplan

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Palo Alto has submitted additional technical and legal materials to support its appeal of San Francisco's certification of the Final Environmental Impact Report for the Recommended Airport Development Plan at San Francisco International Airport. The city argues the FEIR downplays noise and air quality impacts of the expansion plan, and that San Francisco's approval process violated CEQA rules. Palo Alto says the fight is about where planes fly, how loud they are, and how much pollution they bring to nearby communities.

Why it matters

The dispute between Palo Alto and San Francisco over the SFO expansion plan highlights ongoing tensions between airports and neighboring communities over the environmental and quality-of-life impacts of airport operations. As airports modernize and expand, local residents are pushing back against increased noise, air pollution, and other disruptions to their communities.

The details

Palo Alto has filed an appeal of San Francisco's certification of the Final Environmental Impact Report for the Recommended Airport Development Plan at SFO. The city argues the FEIR downplays the noise and air quality impacts of the expansion by relying on speculative assumptions about future growth rather than focusing on current operations. Palo Alto also contends that San Francisco's approval of the plan violated CEQA rules by leaning on a certification that was not yet final.

  • On November 20, 2025, the San Francisco Planning Commission voted to certify the FEIR for the RADP.
  • On December 16, 2025, the San Francisco Airport Commission voted to approve the RADP.
  • On December 19, 2025, Palo Alto originally filed an appeal of the FEIR certification.
  • On January 30, 2026, Palo Alto submitted additional technical and legal materials to support its appeal.
  • On February 3, 2026, Palo Alto's appeal is scheduled to be heard.

The players

City of Palo Alto

A neighboring city to San Francisco that is appealing the certification of the FEIR for the SFO expansion plan, arguing it downplays noise and air quality impacts.

San Francisco Planning Commission

The San Francisco city body that certified the FEIR for the SFO expansion plan in November 2025.

San Francisco Airport Commission

The San Francisco city body that approved the Recommended Airport Development Plan in December 2025.

FAA

The Federal Aviation Administration, which is overseeing the NextGen modernization program that has changed flight paths and concentrated noise and emissions in some communities near airports.

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What’s next

The appeal hearing is scheduled for February 3, 2026, where Palo Alto's additional technical and legal arguments will be heard by a review officer.

The takeaway

The dispute between Palo Alto and San Francisco over the SFO expansion plan highlights the ongoing tensions between airports and neighboring communities over the environmental and quality-of-life impacts of airport operations. As airports modernize, local residents are pushing back against increased noise, air pollution, and other disruptions to their communities.