20–30 Alta Street

1. 1935

   A five-storey, five-unit Moderne apartment building went up here — the first building ever put on the north side of Alta Street at its eastern end, and with 60 Alta Street of the same year the start of the apartment development that transformed the street.

   22-30 Alta Street DEIR, SF Planning Department, 1998
2. 1937

   Built 1937-38 to a design by Angus McSweeney.

   Modern Architecture and Landscape Design Context Statement, adopted 2011
3. 1937

   The building was remodelled.

   22-30 Alta Street DEIR, SF Planning Department, 1998
4. 1985

   With the adoption of the Telegraph Hill Historic District the building was designated Contributory, one of seven intact examples of the district's Modern Period of 1935–1941.

   22-30 Alta Street DEIR, SF Planning Department, 1998
5. May 1986

   Permit 8605339 $$$ $4,000

   Bring building into compliance as required by dahi.

6. 1992

   The city demolished the building after heavy rains and roadwork on Alta Street damaged it, leaving the lot vacant but for the foundation.

   22-30 Alta Street DEIR, SF Planning Department, 1998
7. Feb 1992

   Permit 9203052

   Demolition building.

6 expired or cancelled permits are omitted. The Modern Architecture and Landscape Design context statement documents a 1937 building by Angus McSweeney at this address; the city's own 1998 environmental impact report for the site records that building as put up in 1935, remodelled in 1937 and demolished by the City in 1992, and the 2025 assessor's roll still classes the parcel a vacant residential lot.