4121 20Th St

APN: 3603088 Address: 4121 20TH ST Block / Lot: 3603 / 088 Land Use: Multi-Family Residential Lot Area: 2848.0 Zoning District: RH-2 Zoning Name: RESIDENTIAL- HOUSE, TWO FAMILY Zoning General Type: Residential

Owner: Not publicly available Assessed Land Value: 1305600.0 Assessed Improvement Value: 326400.0 Total Assessed Value: 1632000.0

Last Sale Date: 2023-03-14 Last Sale Price: Not publicly available

Summary: cancelled: 2, complete: 1, expired: 1, issued: 13, reinstated: 2, withdrawn: 2 Recent Permits: 2026-02-11 | 202602115784 | issued (2026-02-27) | Issued: 2026-02-27 | otc alterations permit | 4123 20th St | revision to pa# 202308235085: extend depth of previously approved rear deck by 3'0" to reconcile to previously approved structure drawings.… 2025-12-23 | 202512232508 | issued (2025-12-23) | Issued: 2025-12-23 | otc alterations permit | 4123 20th St | re-roofing: remove and replace roofing material / existing roofing material (in-kind) 2025-07-25 | 202507251674 | issued (2025-08-08) | Issued: 2025-08-08 | otc alterations permit | 4123 20th St | revision to pa #202308235085 and 202406063893. convert approved basement gym to home office and construct new basement bathroom. relocate k… 2024-07-02 | 202406063893 | issued (2025-01-28) | Issued: 2025-01-28 | additions alterations or repairs | 4123 20th St | revision to permit application 2023-0823-5085. basement: excavate crawl space to create additional storage room, convert south storage room… 2023-08-23 | 202308235085 | issued (2024-03-29) | Issued: 2024-03-29 | additions alterations or repairs | 4121 20th St | basement: replace damaged footings, create foyer and interior stair to lower unit. 1st fl: remodel (e) unit, reconfigure entry doors. 2nd f…

No Planning Cases Found

Analysis Neighborhood: Castro/Upper Market Supervisor District: 8 Planning District: Central (7) Police District: MISSION

This report identifies parcel 3603088 as 4121 20TH ST, located in the Castro/Upper Market area, Supervisor District 8, Planning District Central (7), and Police District MISSION. Public assessor roll attributes available for this parcel indicate land use of Multi-Family Residential, a reported lot area of 2848.0, and assessed land and improvement values from the most recent assessor roll year. Permit activity is summarized from DBI permit records when parcel block and lot can be matched, and planning entitlement activity is retrieved from the San Francisco Planning Accela case feed when available.