The largest housing proposal on the north side of San Francisco is facing a new hurdle: Neighbors who want a historic designation of the existing property. But the developer is pushing back.
Laurel Heights Improvement Association, a neighborhood group, nominated the UCSF Laurel Heights campus at 3333 California St. for the National Register of Historic Places.
Developers Prado Group and SKS have proposed partially demolishing the existing office building and building 558 new homes, along with…