A Caltrain railyard plan targets 5,834 new San Francisco homes

California has spent years passing laws to push its cities to build more housing. In San Francisco, one of the most expensive cities in the world, Mayor Daniel Lurie responded with the largest upzoning in decades. Now, on the heels of that upzoning, the city is eyeing a lot full of parked trains. Planners have started environmental review of a plan to turn Caltrain‘s 4th and King railyard into a high-rise neighborhood with up to 5,834 homes. Only San Francisco’s 62-story Salesforce Tower would exceed the height of the project’s tallest tower, according to the state’s CEQA filing. San Francisco’s site is about a tenth the size of a similar plan championed by New York City Mayor Zohran Mamdani. He wants to construct a deck over the 180-acre Sunnyside Yard in Queens and build 12,000 affordable homes. The project has no timeline, funding or approvals, and Mamdani’s administration has asked President Trump for more than $21 billion just for the deck. Private developer Prologis is leading the charge on the 18.6-acre San Francisco project, which would move the rail tracks underground. San Francisco planners will weigh two versions of the project. One would maximize housing at 5,834 units....