270 Masonic Avenue

1. 1985

   Irwin Memorial Blood Bank, the first in the country to use the HIV screening test after its approval in 1985.

   Donna J. Graves and Shayne E. Watson, Citywide Historic Context Statement for LGBTQ History in San Francisco, San Francisco Planning Department, adopted by the Historic Preservation Commission November 18, 2015
2. Dec 1985

   Remodeling of existing second floor offices and basement.

   Complete Permit 8514087 $$$ $58,000
3. Feb 1993

   Demolition exist.1st fl partit./construct 2nd fl slab exist.audito.

   Expired Permit 9301995 $$$ $2,100,000
4. Apr 1994

   Fire protection- 1st floor.

   Expired Permit 9405709 $$$ $50,215
5. Aug 1998

   Repair handicap parking area, barrier removal only.

   Complete Permit 9815149 $$$ $10,000
6. Jun 1999

   Erect a single faced non-electric wall sign.

   Complete Permit 9911639 $$$ $4,300
7. Jun 1999

   Tie into liquidation line 7 installation of tank.

   Complete Permit 9912641 $$$ $22,000
8. Mar 2001

   Add 20 sprinkler atvarious locations.

   Expired Permit 200103134146 $$$ $8,000
9. May 2004

   Renovation to existing space on 2nd floor to provide labs ada restrooms and updated offices.

   Complete Permit 200405113517 $$$ $1,700,000
10. Aug 2004

    Addition to existing fire sprinkler system at 2nd floor.

    Complete Permit 200408181924 $$$ $32,000
11. Sep 2004

    Adding 1 new power supply, 1 new duct detector, 5 new smoke detetors, 2 new pull stations.

    Expired Permit 200409083544 $$$ $14,000
12. Feb 2005

    Minor modifications to appl#200405113517 increase in interior ramp length due to scope(from 18'to19'.

    Complete Permit 200502034765 $$$ $11,000
13. Nov 2005

    Renovationt to existing lab area on ground floor reconfigure walle for labs and new offices. (componets lab) electrical & plumbing under separate permit.

    Complete Permit 200511228850 $$$ $312,000
14. Jan 2006

    Otc alterations permit.

    Expired Permit 200601313445 $$$ $30,000
15. Mar 2006

    Revise 200511228850, 200601313445. install walk in freezer and piping (new). sprinkler under separte permit.

    Complete Permit 200603166787 $$$ $95,000
16. Mar 2006

    Add to existing permit: new structurals foundation for owners equipment (condensers for freezer s) owners requipment condenser units to be under separate permit.

    Complete Permit 200603237367 $$$ $8,000
17. Nov 2007

    Basement - renovation of existing basement level equipment & storage rooms including addition of new accessible restrooms. electrical, mechanical, & sprinkler & fire alarm work under separate permits.

    Complete Permit 200711027212 $$$ $250,000
18. Jul 2008

    Add 7 upright sprinkler to new hallway, add 1 pendant to new hallway. relocate 2 pendent @ meeting room, 2 at staff breakroom & 2 at supply room. add 1 pendent to electrical room. total added 9 sprinkler heads & relocated 6.

    Issued Permit 200807257606 $$$ $6,542
19. Oct 2008

    Basement level-install 1 nac panel, 6 wall mounted strobes, 12 wall mounted horn/strobes, 1 smoke sensor, 2 duct smoke detectors, relocate 1 electromagnetic door holder.

    Issued Permit 200810033336 $$$ $20,000
20. Jun 2010

    Chiller plant replacement. the existing 140 nominal ton chiller located in the basement mechanical. room 014 is to be removed and replaced with four new modular chillers nominal 40 tons each total 160 tons.

    Complete Permit 201006164597 $$$ $500,000
21. Aug 2019

    Voluntary seismic per asce 41-13 tier iii.

    Withdrawn Permit 201908300310 $$$ $2,000,000
22. Sep 2023

    Remove & reinstall newconcrete surface wear of parking lot deck. new insulation & waterproof. replace 2/f open terrace waterproof/paving with new insulation, waterproof & pedestal paving system. remove glass panel steel canopy & steel support dumnage at main entry due to life safety concerns.

    Issued Permit 202309196898 $$$ $975,000
23. Dec 2023

    The structural scope is an addition to the parking deck rehabilitation permit under 202309196898.

    Issued Permit 202312051966 $$$ $1
24. Apr 2024

    Mandatory seismic retrofit of existing building per sfbc section 503.11.1. to allow for future non structural alternations including partitions, ceilings, and mep upgrades for more than two thirds of the building. existing building is currently unoccupied.

    Approved Permit 202403228446 $$$ $4,128,602
25. Dec 2025

    Recommencement and completion work approved under permit application 202312051966.

    Issued Permit 202512222401 $$$ $9,500

DBI holds 37 permits for this parcel, most of them tenant improvements on individual floors. The timeline shows the 24 largest by stated cost, plus the earliest on file; the DBI query in the sources below returns all 37.