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

   Permit 8514087 $$$ $58,000

   Remodeling of existing second floor offices and basement.

3. Aug 1998

   Permit 9815149 $$$ $10,000

   Repair handicap parking area, barrier removal only.

4. Jun 1999

   Permit 9911639 $$$ $4,300

   Erect a single faced non-electric wall sign.

5. Jun 1999

   Permit 9912641 $$$ $22,000

   Tie into liquidation line 7 installation of tank.

6. May 2004

   Permit 200405113517 $$$ $1,700,000

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

7. Aug 2004

   Permit 200408181924 $$$ $32,000

   Addition to existing fire sprinkler system at 2nd floor.

8. Feb 2005

   Permit 200502034765 $$$ $11,000

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

9. Nov 2005

   Permit 200511228850 $$$ $312,000

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

10. Mar 2006

    Permit 200603166787 $$$ $95,000

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

11. Mar 2006

    Permit 200603237367 $$$ $8,000

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

12. Nov 2007

    Permit 200711027212 $$$ $250,000

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

13. Jul 2008

    Issued Permit 200807257606 $$$ $6,542

    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.

14. Oct 2008

    Issued Permit 200810033336 $$$ $20,000

    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.

15. Jun 2010

    Permit 201006164597 $$$ $500,000

    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.

16. Aug 2019

    Withdrawn Permit 201908300310 $$$ $2,000,000

    Voluntary seismic per asce 41-13 tier iii.

17. Sep 2023

    Issued Permit 202309196898 $$$ $975,000

    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.

18. Dec 2023

    Issued Permit 202312051966 $$$ $1

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

19. Apr 2024

    Approved Permit 202403228446 $$$ $4,128,602

    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.

20. Dec 2025

    Issued Permit 202512222401 $$$ $9,500

    Recommencement and completion work approved under permit application 202312051966.

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. 5 expired permits are not shown.