Block 0296, lot 012

536 Mason St

City’s use: Multi-Family Residential
Built: 1916
Stories: 6
Units: 28
Rooms: 28 bathrooms
Building: 14,945 sq ft
Lot: 2,996 sq ft
Zoning: C3R
Construction type: C

From the assessor's latest secured roll, which can lag recent work. Lot plans, zoning and planning history on the city’s Property Information Map

Permits filed here

6 permits filed for this property since 2000.

CompletedIn progressNever finaledExpired or cancelled

Filed	Outcome	Address	Contractor	Work described on the permit	Declared cost
Aug 21, 2025	In progress issued Aug 2025	536 Mason St	Crime Watch Security Sys Llc	upgrade existing fire alarm sytem to comply with sffc section 1103.7.6.1. to meet 75db in all sleeping areas. Details Permit 202508213603 Status issued Filed Aug 21, 2025 Permit issued Aug 22, 2025 Declared cost $39,400 Address 536 Mason St upgrade existing fire alarm sytem to comply with sffc section 1103.7.6.1. to meet 75db in all sleeping areas. Open the permit page	$39,400
Nov 3, 2020	Completed final sign-off Sep 2021	536 Mason St	Cj Plumbing	modify of fire sprinklers @ 1st floor unit #23 & exit passage way & basement passage way per nfpa 13 according to app # 2017 1004 0413; total = 18 fire sprinkler heads Details Permit 202011038101 Status complete Filed Nov 3, 2020 Permit issued Dec 9, 2020 Final sign-off Sep 2, 2021 Declared cost $9,000 Address 536 Mason St modify of fire sprinklers @ 1st floor unit #23 & exit passage way & basement passage way per nfpa 13 according to app # 2017 1004 0413; total = 18 fire sprinkler heads Open the permit page	$9,000
Oct 4, 2017	Completed final sign-off Oct 2021	536 Mason St		comply to complaint #201776271. legalize unit (unit #27) on 1st floor w/ a bedroom, living room, kitchen & (1) full bath per plan per ord #43-14. Details Permit 201710040413 Status complete Filed Oct 4, 2017 Permit issued Oct 23, 2018 Final sign-off Oct 12, 2021 Declared cost $20,000 Address 536 Mason St comply to complaint #201776271. legalize unit (unit #27) on 1st floor w/ a bedroom, living room, kitchen & (1) full bath per plan per ord #43-14. Open the permit page	$20,000
Aug 18, 2017	Never finaled issued Aug 2017, no final	536 Mason St	San Francisco Fire Protection	like for like fire system, replacement due to elevator modernization. replace existing controlpanel & pull stations w/new at the same location. install new smoke detector & relay modules for elev. recall. tie-in existing bells to new panel. will comply w/sffc by 2021. Details Permit 201708185271 Status issued Filed Aug 18, 2017 Permit issued Aug 18, 2017 Declared cost $8,000 Address 536 Mason St like for like fire system, replacement due to elevator modernization. replace existing controlpanel & pull stations w/new at the same location. install new smoke detector & relay modules for elev. recall. tie-in existing bells to new panel. will comply w/sffc by 2021. Open the permit page	$8,000
Jun 18, 2010	Never finaled issued Jun 2010, no final	536 Mason St		street space, sidewalk repair and mta parking Details Permit M207447 Status issued Filed Jun 18, 2010 Permit issued Jun 18, 2010 Address 536 Mason St street space, sidewalk repair and mta parking Open the permit page
May 1, 2007	Never finaled issued May 2007, no final	536 Mason St		street space & sidewalk permit only. Details Permit M66406 Status issued Filed May 1, 2007 Permit issued May 1, 2007 Address 536 Mason St street space & sidewalk permit only. Open the permit page

Who worked here

Everyone with a license on these permits, by role, with how many permits each is on.

Contractors: Cj Plumbing, Crime Watch Security Sys Llc, San Francisco Fire Protection
Engineers: Jeff Tsz Wai Chow
Designers: Stewart Toy

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