William S Duff
Architect · William Duff Architects · San Francisco
Public records
From the licensing board and the city of San Francisco.
The short answer
- Licensed?
- License activeArchitect C-26772First issued Mar 4, 1997, expires Feb 28, 2027.
Source: DCA license roster, retrieved Nov 5, 2026
- Any board discipline?
- None found.
We searched the California Architects Board enforcement list on Nov 5, 2026.
- Worked in San Francisco?
- 56 permits since 2004, 56 in the last 5 years. Latest filed Nov 26, 2025.
- What kind of projects?
- Commercial or tenant improvement 28 · Home remodel 9 · Addition 9
- How long do their permits take?
- Home remodel: within 1 month. City typical for the same review: within 1 month.
Permits filed each year
San Francisco permits by the year they were filed. The last 5 years are in blue.
What are you planning?
Pick your kind of project to see their permits for it.
Commercial or tenant improvement: 28 permits in San Francisco
Time to get a permit
Median from filing to permit, from 25 issued permits filed since 1966; 1 still in review.
Where
- South of Market10
- Financial District/South Beach10
- Tenderloin2
- Russian Hill2
Most recent
- 944 Market St4th floor: tenant improvement of existing 4th floor office space, new interior non-structural partitions. plumbinf, mechanical, electrical uner deferred submittal.Nov 26, 2025Filed
- 1275 Folsom StTenant improvement of a 7,200 sq ft office building. scope includes new hvac and conversion of existing 2nd story to a mezzanine.Dec 18, 2019Complete
- 1275 Folsom StChange of use/change of occupanct only. wholesale sales to design professional/office. mercantile to business t.i. under separate permit.(mezzanine plan)Jun 6, 2019Complete
- 944 Market StTemant improvement of (e) lobbies on 3rd & 4th floors. new interior finishes and lighting. provide door actuator at entrance door.Jan 10, 2019Cancelled
- 190 Lombard StOpen closetDec 28, 2018Issued
| Filed | Project | Type | Status | Time to permit | Open |
|---|---|---|---|---|---|
| Nov 26, 2025 | 944 Market St 4th floor: tenant improvement of existing 4th floor office space, new interior non-structural partitions. plumbinf, mechanical, electrical uner deferred submittal. Filed | Commercial or tenant improvement | Filed | — | |
| Dec 2, 2024 | 26 Ofarrell St Revision to pa #202109077889 revise mezzanine framing. clarification notes for city planning purpose about future floor and column finishes. to comply with nov #202181969. add new restroom, adjust ramp and storage room, change occupancy at mezz to b occ. revise stairs, remove lift & dumbwaiter. Issued | Revision or supplement | Issued | 18 months | |
| Apr 4, 2024 | 2630 Divisadero St 1st floor: interior adjustments to create nw guest room & relocate office room, nw exterior double door & double-hung windows at rear facade in nw guest rm: nw exterior door & casement windw at rear facade in office rm; 2nd fl: removal of extg wall between kitchen & family rm; Issued | Home remodel | Issued | 12 months | |
| Apr 25, 2023 | 701 03rd St Revision to pa#201910235416. t.i. of a grd flr bar & restaurant. (n) non structural partitions & finishes, lightings. millwork & kitchen equipment. includes (n) mep work associated w/ project. fire sprinklers is design/built under a separate permit. Complete | Revision or supplement | Complete | 4 months | |
| Apr 17, 2023 | 1275 Folsom St Erect one banner on (e) mounts Cancelled | Other | Cancelled | — | |
| Nov 19, 2021 | 701 03rd St Rooftop. rev to pa202105100080 to bar equipment layout. no work to egress componenets, plumbing,mech & electrical are design build and under a separtate permit. f/s is design build under sep permit. maher n/a. Complete | Revision or supplement | Complete | Within 1 month | |
| Sep 13, 2021 | 3673 Jackson St Conversion of (e) unconditioned pool enclosure building to new family room with small addition on connector to main house; remodel of existing kitchen and pantry with new appliances and plumbing fixtures. Complete | Addition | Complete | 13 months | |
| May 25, 2021 | 49 Stevenson St Basement: revision to pa 201910073701. reduced scope from original approved plans. install (n) walk-in coolers, (2) 3-compartment sinks, ventless dishwasher and hand sink. all mep work under separate deferred trade permits Complete | Revision or supplement | Complete | Within 1 month | |
| Sep 16, 2020 | 1275 Folsom St Revision to pa 201912189874. mechanical revisions. Complete | Revision or supplement | Complete | Within 1 month | |
| Jun 5, 2020 | 1275 Folsom St Removal of existing front facade door and replace with new window storefront system Complete | Other | Complete | 3 months | |
| Dec 18, 2019 | 1275 Folsom St Tenant improvement of a 7,200 sq ft office building. scope includes new hvac and conversion of existing 2nd story to a mezzanine. Complete | Commercial or tenant improvement | Complete | 6 months | |
| Jun 6, 2019 | 1275 Folsom St Change of use/change of occupanct only. wholesale sales to design professional/office. mercantile to business t.i. under separate permit.(mezzanine plan) Complete | Commercial or tenant improvement | Complete | 5 months | |
| Apr 30, 2019 | 450 Hayes St Revision to occupancy calcuation on approved permit #201601207535. Complete | Revision or supplement | Complete | Within 1 month | |
| Jan 10, 2019 | 944 Market St Temant improvement of (e) lobbies on 3rd & 4th floors. new interior finishes and lighting. provide door actuator at entrance door. Cancelled | Commercial or tenant improvement | Cancelled | — | |
| Dec 28, 2018 | 190 Lombard St Open closet Issued | Commercial or tenant improvement | Issued | Within 1 month | |
| Apr 6, 2018 | 845 Market St Space 195 - ti of an existing ground floor level shell retail space. new interior non structural partitions and finishes, lighting, millwork restroom and associated mechanical, electrical & plumbing work. fire sprinkler & alarm are design/build under a separate permit. maher n/a Complete | Commercial or tenant improvement | Complete | Within 1 month | |
| Feb 5, 2018 | 276 05th St Ti of an extg ground level shell retail space into a restaurant. ref 900 folsom for mep. installation of interior non-structural partitions and finishes, lighting, millwork, kitchen equip/hood, plumbing, mech, and electrical. fire sprinkler, ansul and alarm plans under sep permits. n/a for maher Complete | Commercial or tenant improvement | Complete | 1 month | |
| Dec 20, 2017 | 999 Brannan St Install one illuminated single faced wall sign (roof), "dolby family ventures". maher na Complete | Other | Complete | 8 months | |
| Oct 31, 2017 | 55 Ashbury Tr Revision to 201708104503: new skylight in bathroom, new fire rated window in master bath. Complete | Revision or supplement | Complete | Within 1 month | |
| Oct 12, 2017 | 999 Brannan St Ref pa 2016-0718-2636 restore 1 hr fire rating on original cantilevered moment frame per bldg inspector jeff barnes. special inspection required.product used is flame off (spracy on finish) fire rate paint, product name is flameoff fire barrier paint. Issued | Revision or supplement | Issued | Within 1 month |
Sources: DataSF i98e-djp9, 3pee-9qhc, retrieved Nov 5, 2026. Names on permits are matched to licenses by license number and name; unmatched records are not shown.
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