Supervisors advance Warriors event center items, approve transportation‑fund amendments and seek clarity on mitigation responsibility

SAN FRANCISCO — The Board of Supervisors Budget and Finance Committee on Monday moved forward four linked actions tied to the Golden State Warriors’ proposed Mission Bay event center, advancing CEQA findings, an ordinance to create a Mission Bay Transportation Improvement Fund, delegation of authority to accept public improvements, and related easement vacations to the full board with recommendation for the Dec. 8 meeting.

The committee’s meeting centered on transportation mitigation and financing. Adam Vandewater of the Office of Economic and Workforce Development said the privately funded project would include an 18,000‑seat arena, roughly 580,000 gross square feet of office space and up to about 125,000 square feet of retail on Mission Bay blocks 29–32. Vandewater said the project includes about 950 on‑site parking stalls and rights to 132 additional stalls at 450 South Street.

"This ordinance is the last most critical piece of this puzzle," Rick Welch, president and chief operating officer of the Golden State Warriors, told the committee. "It's the means to ensure that there is ongoing funding for the transportation services that will be there for the entire neighborhood." Welch also noted the team’s outreach: "Since we pivoted to Mission Bay a year and a half ago, we've had over 60 community meetings."

What the fund would pay and who ultimately bears responsibility were the primary questions. City staff described a multi‑layered mitigation plan: SFMTA would buy four light‑rail vehicles (LRVs) to enable two‑car trains…