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Architect, San Francisco License C21728

Wda William Duff Architects

The city has issued 43 of the 46 San Francisco building permits that name Wda William Duff Architects since 2018. The work is mostly residential, led by home remodels. Their busiest neighborhoods are Seacliff, Presidio Heights and Pacific Heights.

Issued by the city
43 of 46 filed since 2018
Rank for home remodels
No. 65 of 869 by home remodels issued
Overall rank
No. 165 of 1,543 architects and designers
Commercial share
4% last filing Aug 2026

What they work on

Every San Francisco building permit with Wda William Duff Architects on the record since 2018, by project type. Most filed: 35 home remodels, 7 home additions, 1 ADUs.

Residential and commercial, by permits filed

96% residential
4% commercial
Permits by project type, filed and issued
  1. Home remodels Residential 34 of 35 issued 76% of filings.
  2. Home additions Residential 6 of 7 issued 15% of filings.
  3. ADUs Residential 1 of 1 issued 2% of filings.
  4. Apartments and multifamily Residential 0 of 1 issued 2% of filings.
  5. Offices Commercial 1 of 1 issued 2% of filings.
  6. Restaurants and bars Commercial 1 of 1 issued 2% of filings.

Permits over time

Permits filed each year, drawn as a street with one building per year, and how many of all their permits the city has issued.

Busiest year
2023
13 permits filed
Latest filing
Aug 2026
93% of 46 issued
Permits filed per year: 2018: 0, 2019: 3, 2020: 0, 2021: 8, 2022: 6, 2023: 13, 2024: 7, 2025: 3, 2026: 6. The 2026 figure runs through October 20, 2026.

One building per year, its height the permits filed. Each floor line marks 2 permits; the 2026 building is dashed because it counts permits filed through October 20, 2026.

Issued by the city: 43 of 46 permits filed

93%

All San Francisco project permits since 2018 in this data

93% issued

3 not issued as of October 20, 2026. Source: SF Department of Building Inspection permits via DataSF.

How fast their permits come through

Filing to issue for permits that went through plan review. Wda William Duff Architects has 3 of those across all project types; the citywide comparison is for home remodels, their most filed type, where 3,361 of 93,498 permits went through plan review and the rest were approved over the counter.

No median yet: fewer than 3 issued plan-review permits with usable dates.

Median months from filing to issue for plan-review permits. San Francisco, home remodels: 8.9 months. Middle half of city permits: 5.0 to 15.6 months.
154 other architects and designers ranked for home remodels have a median for it Each circle is a firm's median for its plan-review permits for home remodels. Dashed line: the median of all San Francisco plan-review permits for home remodels, 8.9 months. Shaded: the middle half of those permits, 5.0 to 15.6 months.
0 3 6 9 12 15 18+ months Xie Associates: 8.3 months Hing Wah Construction: 9.5 months Hing Wah Design: 6.6 months Ken Chan: 10.8 months Tommy Lee Consulting: 7.9 months Bin Lei: 32.2 months Jason M.J.Chan Architect: 6.2 months Sutro Architects: 7.6 months Architects Sf: 15.8 months Shatara Architecture: 13.9 months Troy Kashanipour: 8.5 months Topetcher Architectural: 7.5 months Knock Arch & Design: 10.0 months Curtis Hollenbeck Architect: 9.3 months Aaron Lim Design: 3.5 months Five Design: 7.3 months William Pashelinsky Arch.: 10.8 months Lisa Wong: 46.8 months Kelly Melendez Architect: 14.0 months John Lum Architecture: 14.9 months Jeffrey A. Eade Architect: 4.4 months Martinkovic Milford Architects: 5.0 months Hood Thomas Architects: 8.7 months Schaub | Li | Architects: 10.9 months Eag Studio: 10.1 months Jorge Carbonell Architecture: 6.6 months Cassandra Mettling Davis: 17.5 months Kohlmyer: 10.6 months Brooks Mcdonald Architecture: 10.2 months Jim Treman Architect: 9.0 months 2m Architecture: 16.0 months Rodgers Architecture: 15.2 months Geddes Ulinskas Architects: 8.9 months Selander Architects: 15.9 months A. Gordon Atkinson Aia: 13.7 months Mason Kirby Inc.: 4.3 months Eta-Sf: 6.4 months Ottolini Booth & Associates: 26.2 months David Armour Architecture: 4.4 months Rothblatt Architecture: 8.5 months Arcus Architecture & Planning: 13.0 months Kotas/Pantaleoni Architects: 8.4 months Raumfabrik Architecture: 9.1 months Mike Larkin Architecture: 6.9 months Apparatus: 4.5 months Kevin Ma Architecture: 8.7 months Butler Armsden Architects: 8.7 months Mcgriff Architects: 15.0 months Geiszler Architects: 22.4 months Edit: 9.8 months Michael Schulte: 11.4 months Dnm Architect: 8.6 months Huang Iboshi Architecture: 7.8 months Romain Curtis Architect: 13.0 months Bill Egan Architect: 18.1 months Syncopated Architecture: 7.6 months Red Dot Studio Architecture: 11.9 months Levy Art+Architecture: 14.5 months Studio 797: 5.4 months Mml Architect: 4.6 months Ltd Architecture: 11.7 months Gisela Schmoll Architect, Pc: 5.9 months Kerman Morris Architects: 10.1 months Rex Mclean Architects: 8.0 months Azevedo Design: 17.1 months Creates Cool: 17.0 months Pencil Box Architects: 14.1 months Mostert Architecture: 8.7 months Butler Armsden Architecture: 4.4 months Engel Architects: 9.4 months Gast Architects: 7.7 months Larson Shores Arch.: 17.1 months Thousand Architects: 10.7 months Wing Lee Architects: 8.8 months L.A. Paul & Associates: 12.5 months At6 Architecture Design: 8.7 months Kwan Design Architects: 13.4 months Wayne Myer Works Arch: 9.2 months John Maniscalco Architecture: 13.1 months Molina & Timmins Architect: 16.8 months Dennis A. Smith Architect: 5.2 months Graham Architects: 6.3 months Lawson Willard Architecture: 12.9 months Compassion By Design: 11.6 months Dan Phipps Architects: 6.7 months Baukunst: 7.9 months Feldman Architecture: 6.5 months Blue Truck Inc.: 10.8 months Rachel Malchow Architect Inc.: 9.9 months Farrrell Architecture: 10.7 months Studio J. Architecture: 3.8 months Dennis Budd Aia Architect: 9.1 months Studio Terpeluk: 30.3 months Actual-Size Architecture: 24.3 months Van T. Ly & Associataes: 10.6 months Campbell & Associates: 4.2 months Zepponi Architects: 15.7 months Jennifer Tulley Architects: 25.9 months Amlgm: 12.7 months Aidlin Darling Design: 6.5 months Mark English Architects: 9.9 months Elevation Architects: 5.2 months Edmonds & Lee Architects: 3.4 months Interstice Architects: 13.1 months Stephen Antonaros Architect: 10.0 months James Barker Design: 12.4 months Thayer Hopkins Architects: 4.5 months 2v Design: 9.3 months Oblique City. Sf Design Bureau: 19.4 months Martin Partners: 9.6 months Verner Architects: 6.2 months Ken Linsteadt & Architecture: 9.5 months Mcelroy Architecture: 15.5 months Malcolm Davis Architecture: 3.8 months Thomas Works A+D: 12.5 months Mark Reilly Architecture: 11.6 months Studio Vara Architecute: 18.3 months S F Architecture: 10.5 months Hc Design Build: 6.9 months Jorams Altman ,Architect: 13.8 months Yung Chen: 25.2 months 07 Studios: 16.1 months Alan Martinez Architect: 11.3 months Andrew Skurman Arch: 8.4 months Mcmahon Arch: 6.1 months Saw//Spiegel Ahara Workshop: 14.7 months Andrew Morrall Architect: 13.7 months James Hill Architect: 11.1 months Mattingly Thaler Archit.: 4.3 months Renato Jose I Architect: 6.9 months Architect Mason Kirby: 5.6 months Monica Ream Architecture: 9.0 months Inft3: 16.5 months Suzette Smith Inc: 4.6 months Ricardo Moura: 4.1 months Adbc Architecture: 6.8 months Haller Architecture & Design: 12.2 months Ryan Leidner Architecture: 8.9 months Bohlin Cywinski Jackson: 8.5 months Doma Architects: 16.1 months Cm Architects: 16.6 months Harvey Hacker Architects: 10.3 months Natoma Architects Inc.: 2.9 months David Kesler Architect: 4.4 months Mk Think: 9.2 months Walker & Moody Architects: 3.9 months Ewald Tajbaksh Architecture: 17.3 months Levy Design Partners: 6.2 months Mahya Salehi Fadardi: 7.3 months Schwartz & Architecture: 14.0 months Beausoleil Architecture: 5.9 months Abron A. Yates, Jr., Ra Arch.: 24.9 months Richard Merlau: 14.9 months Rynerson Obrien Architecture: 7.6 months 0 3 6 9 12 15 18+ months Xie Associates: 8.3 months Hing Wah Construction: 9.5 months Hing Wah Design: 6.6 months Ken Chan: 10.8 months Tommy Lee Consulting: 7.9 months Bin Lei: 32.2 months Jason M.J.Chan Architect: 6.2 months Sutro Architects: 7.6 months Architects Sf: 15.8 months Shatara Architecture: 13.9 months Troy Kashanipour: 8.5 months Topetcher Architectural: 7.5 months Knock Arch & Design: 10.0 months Curtis Hollenbeck Architect: 9.3 months Aaron Lim Design: 3.5 months Five Design: 7.3 months William Pashelinsky Arch.: 10.8 months Lisa Wong: 46.8 months Kelly Melendez Architect: 14.0 months John Lum Architecture: 14.9 months Jeffrey A. Eade Architect: 4.4 months Martinkovic Milford Architects: 5.0 months Hood Thomas Architects: 8.7 months Schaub | Li | Architects: 10.9 months Eag Studio: 10.1 months Jorge Carbonell Architecture: 6.6 months Cassandra Mettling Davis: 17.5 months Kohlmyer: 10.6 months Brooks Mcdonald Architecture: 10.2 months Jim Treman Architect: 9.0 months 2m Architecture: 16.0 months Rodgers Architecture: 15.2 months Geddes Ulinskas Architects: 8.9 months Selander Architects: 15.9 months A. Gordon Atkinson Aia: 13.7 months Mason Kirby Inc.: 4.3 months Eta-Sf: 6.4 months Ottolini Booth & Associates: 26.2 months David Armour Architecture: 4.4 months Rothblatt Architecture: 8.5 months Arcus Architecture & Planning: 13.0 months Kotas/Pantaleoni Architects: 8.4 months Raumfabrik Architecture: 9.1 months Mike Larkin Architecture: 6.9 months Apparatus: 4.5 months Kevin Ma Architecture: 8.7 months Butler Armsden Architects: 8.7 months Mcgriff Architects: 15.0 months Geiszler Architects: 22.4 months Edit: 9.8 months Michael Schulte: 11.4 months Dnm Architect: 8.6 months Huang Iboshi Architecture: 7.8 months Romain Curtis Architect: 13.0 months Bill Egan Architect: 18.1 months Syncopated Architecture: 7.6 months Red Dot Studio Architecture: 11.9 months Levy Art+Architecture: 14.5 months Studio 797: 5.4 months Mml Architect: 4.6 months Ltd Architecture: 11.7 months Gisela Schmoll Architect, Pc: 5.9 months Kerman Morris Architects: 10.1 months Rex Mclean Architects: 8.0 months Azevedo Design: 17.1 months Creates Cool: 17.0 months Pencil Box Architects: 14.1 months Mostert Architecture: 8.7 months Butler Armsden Architecture: 4.4 months Engel Architects: 9.4 months Gast Architects: 7.7 months Larson Shores Arch.: 17.1 months Thousand Architects: 10.7 months Wing Lee Architects: 8.8 months L.A. Paul & Associates: 12.5 months At6 Architecture Design: 8.7 months Kwan Design Architects: 13.4 months Wayne Myer Works Arch: 9.2 months John Maniscalco Architecture: 13.1 months Molina & Timmins Architect: 16.8 months Dennis A. Smith Architect: 5.2 months Graham Architects: 6.3 months Lawson Willard Architecture: 12.9 months Compassion By Design: 11.6 months Dan Phipps Architects: 6.7 months Baukunst: 7.9 months Feldman Architecture: 6.5 months Blue Truck Inc.: 10.8 months Rachel Malchow Architect Inc.: 9.9 months Farrrell Architecture: 10.7 months Studio J. Architecture: 3.8 months Dennis Budd Aia Architect: 9.1 months Studio Terpeluk: 30.3 months Actual-Size Architecture: 24.3 months Van T. Ly & Associataes: 10.6 months Campbell & Associates: 4.2 months Zepponi Architects: 15.7 months Jennifer Tulley Architects: 25.9 months Amlgm: 12.7 months Aidlin Darling Design: 6.5 months Mark English Architects: 9.9 months Elevation Architects: 5.2 months Edmonds & Lee Architects: 3.4 months Interstice Architects: 13.1 months Stephen Antonaros Architect: 10.0 months James Barker Design: 12.4 months Thayer Hopkins Architects: 4.5 months 2v Design: 9.3 months Oblique City. Sf Design Bureau: 19.4 months Martin Partners: 9.6 months Verner Architects: 6.2 months Ken Linsteadt & Architecture: 9.5 months Mcelroy Architecture: 15.5 months Malcolm Davis Architecture: 3.8 months Thomas Works A+D: 12.5 months Mark Reilly Architecture: 11.6 months Studio Vara Architecute: 18.3 months S F Architecture: 10.5 months Hc Design Build: 6.9 months Jorams Altman ,Architect: 13.8 months Yung Chen: 25.2 months 07 Studios: 16.1 months Alan Martinez Architect: 11.3 months Andrew Skurman Arch: 8.4 months Mcmahon Arch: 6.1 months Saw//Spiegel Ahara Workshop: 14.7 months Andrew Morrall Architect: 13.7 months James Hill Architect: 11.1 months Mattingly Thaler Archit.: 4.3 months Renato Jose I Architect: 6.9 months Architect Mason Kirby: 5.6 months Monica Ream Architecture: 9.0 months Inft3: 16.5 months Suzette Smith Inc: 4.6 months Ricardo Moura: 4.1 months Adbc Architecture: 6.8 months Haller Architecture & Design: 12.2 months Ryan Leidner Architecture: 8.9 months Bohlin Cywinski Jackson: 8.5 months Doma Architects: 16.1 months Cm Architects: 16.6 months Harvey Hacker Architects: 10.3 months Natoma Architects Inc.: 2.9 months David Kesler Architect: 4.4 months Mk Think: 9.2 months Walker & Moody Architects: 3.9 months Ewald Tajbaksh Architecture: 17.3 months Levy Design Partners: 6.2 months Mahya Salehi Fadardi: 7.3 months Schwartz & Architecture: 14.0 months Beausoleil Architecture: 5.9 months Abron A. Yates, Jr., Ra Arch.: 24.9 months Richard Merlau: 14.9 months Rynerson Obrien Architecture: 7.6 months

12 firms with medians over 18 months are drawn at the right edge.

Where they rank

Ranked by permits the city has issued since 2018, first across every project type, then for home remodels alone.

  1. 163 Wayne Myer Works Arch 43
  2. 164 Bill Egan Architect 43
  3. 165 Wda William Duff Architects 43
  4. 166 I-Design Arch. 42
  5. 167 Ltd Architecture 42

All permits issued, 1,543 architects and designers Full ranking

  1. 63 Romain Curtis Architect 34
  2. 64 Bill Egan Architect 34
  3. 65 Wda William Duff Architects 34
  4. 66 Syncopated Architecture 32
  5. 67 Red Dot Studio Architecture 32

Home remodels issued, 869 architects and designers Home remodels ranking

Where they work

The neighborhoods where Wda William Duff Architects files the most permits, and how many architects and designers count each one among their top 4 neighborhoods.

  1. 01 Seacliff 47 architects and designers count Seacliff among their busiest neighborhoods
  2. 02 Presidio Heights 129 architects and designers count Presidio Heights among their busiest neighborhoods
  3. 03 Pacific Heights 221 architects and designers count Pacific Heights among their busiest neighborhoods
  4. 04 West of Twin Peaks 306 architects and designers count West of Twin Peaks among their busiest neighborhoods

Questions for the first call

  1. Which of your recent San Francisco permits are closest to my project in type, size and neighborhood, and can I see the permit numbers?
  2. How long did those permits take from filing to issue, and what did plan check send back?
  3. Who on your team draws the set, who stamps it, and who answers the city's comments?

Other architects and designers for home remodels

Firms ranked near Wda William Duff Architects by permits issued for home remodels.

  1. 61 Huang Iboshi Architecture 34 home remodels issued · 7.8 mo median for home remodels
  2. 62 Bittiker Architecture 34 home remodels issued
  3. 63 Romain Curtis Architect 34 home remodels issued · 13.0 mo median for home remodels
  4. 66 Syncopated Architecture 32 home remodels issued · 7.6 mo median for home remodels
  5. 67 Red Dot Studio Architecture 32 home remodels issued · 11.9 mo median for home remodels
  6. 68 Marjang Design 32 home remodels issued

See all 869 architects and designers ranked for home remodels

Sheet
A-165 No. 165 of 1,543
Drawing
Permit record, Wda William Duff Architects
Architect, San Francisco
License
C21728 check with CAB
Data as of
Oct 2026
Scale
Not to scale

Built only from public San Francisco Department of Building Inspection records (permits, permit contacts), updated 2026-10-20. It is not a review or an endorsement, and Wda William Duff Architects has not paid to be listed. Project addresses are never shown.

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