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Architect, San Francisco License C018065

Mark Horton Architecture

The city has issued 48 of the 54 San Francisco building permits that name Mark Horton Architecture since 2018. The work is a mix of residential and commercial, led by offices. Their busiest neighborhoods are Financial District/South Beach, Mission and Russian Hill.

Issued by the city
48 of 54 filed since 2018
Rank for offices
No. 46 of 372 by offices issued
Overall rank
No. 141 of 1,543 architects and designers
Commercial share
63% last filing Aug 2026

What they work on

Every San Francisco building permit with Mark Horton Architecture on the record since 2018, by project type. Most filed: 27 offices, 15 home remodels, 4 apartments and multifamily.

Residential and commercial, by permits filed

37% residential
63% commercial
Permits by project type, filed and issued
  1. Offices Commercial 25 of 27 issued 50% of filings.
  2. Home remodels Residential 14 of 15 issued 28% of filings.
  3. Apartments and multifamily Residential 1 of 4 issued 7% of filings.
  4. Retail and shops Commercial 3 of 3 issued 6% of filings.
  5. Restaurants and bars Commercial 2 of 2 issued 4% of filings.
  6. Hotels, clinics, schools and other commercial Commercial 2 of 2 issued 4% of filings.
  7. Home additions Residential 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
2021
13 permits filed
Latest filing
Aug 2026
89% of 54 issued
Permits filed per year: 2018: 9, 2019: 9, 2020: 4, 2021: 13, 2022: 6, 2023: 3, 2024: 3, 2025: 2, 2026: 5. 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: 48 of 54 permits filed

89%

All San Francisco project permits since 2018 in this data

93% issued

6 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. Mark Horton 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. 139 Levy Art+Architecture 48
  2. 140 Otj Architects 48
  3. 141 Mark Horton Architecture 48
  4. 142 Marjang Design 48
  5. 143 Zachary Nathan Architect 48

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

  1. 44 Michael Zucker & Associates 26
  2. 45 Tecta Associates 25
  3. 46 Mark Horton Architecture 25
  4. 47 Johnstonmarklee 25
  5. 48 Drsa 24

Offices issued, 372 architects and designers Offices ranking

Where they work

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

  1. 01 Financial District/South Beach 386 architects and designers count Financial District/South Beach among their busiest neighborhoods
  2. 02 Mission 381 architects and designers count Mission among their busiest neighborhoods
  3. 03 Russian Hill 102 architects and designers count Russian Hill among their busiest neighborhoods
  4. 04 South of Market 216 architects and designers count South of Market 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 Mark Horton Architecture by permits issued for offices.

  1. 40 Tef Design 30 offices issued · 13.6 mo median for offices
  2. 44 Michael Zucker & Associates 26 offices issued
  3. 45 Tecta Associates 25 offices issued
  4. 48 Drsa 24 offices issued
  5. 49 Mithun Architects 23 offices issued
  6. 50 Saa 23 offices issued

See all 372 architects and designers ranked for offices

Sheet
A-141 No. 141 of 1,543
Drawing
Permit record, Mark Horton Architecture
Architect, San Francisco
License
C018065 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 Mark Horton Architecture has not paid to be listed. Project addresses are never shown.

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