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Architect, Greenbrae License C13096

Tsang Architecture

The city has issued 10 of the 10 San Francisco building permits that name Tsang Architecture since 2018. The work is mostly commercial, led by offices. Their busiest neighborhoods are Western Addition, Inner Richmond and Tenderloin.

Issued by the city
10 of 10 filed since 2018
Rank for offices
No. 166 of 372 by offices issued
Overall rank
No. 617 of 1,543 architects and designers
Commercial share
90% last filing Apr 2025

What they work on

Every San Francisco building permit with Tsang Architecture on the record since 2018, by project type. Most filed: 5 offices, 3 hotels, clinics, schools and other commercial, 1 apartments and multifamily.

Residential and commercial, by permits filed

10% residential
90% commercial
Permits by project type, filed and issued
  1. Offices Commercial 5 of 5 issued 50% of filings.
  2. Hotels, clinics, schools and other commercial Commercial 3 of 3 issued 30% of filings.
  3. Apartments and multifamily Residential 1 of 1 issued 10% of filings.
  4. Restaurants and bars Commercial 1 of 1 issued 10% 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
2018
5 permits filed
Latest filing
Apr 2025
100% of 10 issued
Permits filed per year: 2018: 5, 2019: 2, 2020: 0, 2021: 1, 2022: 1, 2023: 0, 2024: 0, 2025: 1, 2026: 0. The 2026 figure runs through October 20, 2026.

One building per year, its height the permits filed. Each floor line marks 1 permit; the 2026 building is dashed because it counts permits filed through October 20, 2026.

Issued by the city: 10 of 10 permits filed

100%

All San Francisco project permits since 2018 in this data

93% issued

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. Tsang Architecture has 2 of those across all project types; the citywide comparison is for offices, their most filed type, where 1,360 of 26,216 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, offices: 3.9 months. Middle half of city permits: 1.8 to 8.1 months.
45 other architects and designers ranked for offices have a median for it Each circle is a firm's median for its plan-review permits for offices. Dashed line: the median of all San Francisco plan-review permits for offices, 3.9 months. Shaded: the middle half of those permits, 1.8 to 8.1 months.
0 3 6 9 12 15+ months Revel Architecture & Design: 4.9 months Huntsman: 6.6 months Gensler: 5.4 months Rmw: 3.5 months Asd | Sky: 2.6 months Brereton Architects: 3.4 months Forge Architecture: 8.2 months Smith Group: 2.7 months Studios Architecture: 7.2 months Costa Brown Architecture: 12.1 months Ia Interior Architects: 7.7 months Rapt Studio: 9.6 months Som: 2.4 months Msa Architecture+Design: 5.0 months Perkins & Will: 5.1 months Tmda: 2.6 months Woods Bagot: 4.2 months Maccracken Architects: 19.3 months Dowler Gruman Architects: 6.5 months Hok: 4.9 months Gensler Architect: 5.9 months Quezada Architecture Inc: 6.4 months Mbh Architects: 14.7 months Michael Castro: 5.5 months Tef Design: 13.6 months Wrns Studio: 8.1 months Russell + Lopes Architects: 7.5 months Vocon: 5.1 months Bohlin Cywinski Jackson: 10.3 months Mbh: 3.7 months Shubin Donaldson: 5.4 months Polytech Assoicates: 2.5 months Mithun: 4.3 months Archtectural Resources Group: 4.1 months Brick: 4.6 months Ssdp: 5.2 months Studio Architecture: 14.9 months Page & Turnbull, Inc.: 8.5 months Red Cloud Wireless: 5.5 months Stantec Architecture Inc.: 18.6 months Pacific Das: 2.3 months Natoma Architects Inc.: 10.3 months Atelier 424: 2.6 months Studio Gang Architects: 2.9 months Owow Design: 4.3 months 0 3 6 9 12 15+ months Revel Architecture & Design: 4.9 months Huntsman: 6.6 months Gensler: 5.4 months Rmw: 3.5 months Asd | Sky: 2.6 months Brereton Architects: 3.4 months Forge Architecture: 8.2 months Smith Group: 2.7 months Studios Architecture: 7.2 months Costa Brown Architecture: 12.1 months Ia Interior Architects: 7.7 months Rapt Studio: 9.6 months Som: 2.4 months Msa Architecture+Design: 5.0 months Perkins & Will: 5.1 months Tmda: 2.6 months Woods Bagot: 4.2 months Maccracken Architects: 19.3 months Dowler Gruman Architects: 6.5 months Hok: 4.9 months Gensler Architect: 5.9 months Quezada Architecture Inc: 6.4 months Mbh Architects: 14.7 months Michael Castro: 5.5 months Tef Design: 13.6 months Wrns Studio: 8.1 months Russell + Lopes Architects: 7.5 months Vocon: 5.1 months Bohlin Cywinski Jackson: 10.3 months Mbh: 3.7 months Shubin Donaldson: 5.4 months Polytech Assoicates: 2.5 months Mithun: 4.3 months Archtectural Resources Group: 4.1 months Brick: 4.6 months Ssdp: 5.2 months Studio Architecture: 14.9 months Page & Turnbull, Inc.: 8.5 months Red Cloud Wireless: 5.5 months Stantec Architecture Inc.: 18.6 months Pacific Das: 2.3 months Natoma Architects Inc.: 10.3 months Atelier 424: 2.6 months Studio Gang Architects: 2.9 months Owow Design: 4.3 months

2 firms with medians over 15 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 offices alone.

  1. 615 Shawn Gorman, Architect 10
  2. 616 Studio One Eleven 10
  3. 617 Tsang Architecture 10
  4. 618 Wendy Woo 10
  5. 619 William Commer 10

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

  1. 164 Crome Architecture 5
  2. 165 Atelier 424 5
  3. 166 Tsang Architecture 5
  4. 167 Amir Kakavand 5
  5. 168 Brown Reynolds Watford Arch 5

Offices issued, 372 architects and designers Offices ranking

Where they work

The neighborhoods where Tsang Architecture files the most permits, and how many architects and designers count each one among their top 4 neighborhoods.

  1. 01 Western Addition 74 architects and designers count Western Addition among their busiest neighborhoods
  2. 02 Inner Richmond 120 architects and designers count Inner Richmond among their busiest neighborhoods
  3. 03 Tenderloin 112 architects and designers count Tenderloin among their busiest neighborhoods
  4. 04 Hayes Valley 106 architects and designers count Hayes Valley 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 offices

Firms ranked near Tsang Architecture by permits issued for offices.

  1. 163 Callison Architects, P.C. 5 offices issued
  2. 164 Crome Architecture 5 offices issued
  3. 165 Atelier 424 5 offices issued · 2.6 mo median for offices
  4. 167 Amir Kakavand 5 offices issued
  5. 168 Brown Reynolds Watford Arch 5 offices issued
  6. 169 Dlr Group 5 offices issued

See all 372 architects and designers ranked for offices

Sheet
A-617 No. 617 of 1,543
Drawing
Permit record, Tsang Architecture
Architect, Greenbrae
License
C13096 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 Tsang Architecture has not paid to be listed. Project addresses are never shown.

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