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Engineer, Pittsburg License C040929

Sergio Mayorga Assc

The city has issued 31 of the 40 San Francisco building permits that name Sergio Mayorga Assc since 2018. The work is mostly residential, led by apartments and multifamily. Their median plan-review permit for apartments and multifamily took 31.8 months from filing to issue, 409% slower than the citywide median. Their busiest neighborhoods are Presidio Heights, Russian Hill and Pacific Heights.

Also filed as
architect
Issued by the city
31 of 40 filed since 2018
Median plan-review time, apartments and multifamily
31.8 mo city median 6.2 mo
Rank for apartments and multifamily
No. 58 of 516 by apartments and multifamily issued
Overall rank
No. 168 of 1,146 engineers

What they work on

Every San Francisco building permit with Sergio Mayorga Assc on the record since 2018, by project type. Most filed: 29 apartments and multifamily, 6 home remodels, 2 hotels, clinics, schools and other commercial.

Residential and commercial, by permits filed

90% residential
10% commercial
Permits by project type, filed and issued
  1. Apartments and multifamily Residential 23 of 29 issued 73% of filings.
  2. Home remodels Residential 6 of 6 issued 15% of filings.
  3. Hotels, clinics, schools and other commercial Commercial 1 of 2 issued 5% of filings.
  4. ADUs Residential 0 of 1 issued 3% of filings.
  5. Offices Commercial 1 of 1 issued 3% of filings.
  6. Restaurants and bars Commercial 0 of 1 issued 3% 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
7 permits filed
Latest filing
Aug 2026
78% of 40 issued
Permits filed per year: 2018: 7, 2019: 6, 2020: 4, 2021: 4, 2022: 7, 2023: 3, 2024: 3, 2025: 3, 2026: 3. 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: 31 of 40 permits filed

78%

All San Francisco project permits since 2018 in this data

93% issued

9 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. Sergio Mayorga Assc has 12 of those across all project types; the citywide comparison is for apartments and multifamily, their most filed type, where 3,633 of 59,927 permits went through plan review and the rest were approved over the counter.

Sergio Mayorga Assc, apartments and multifamily

31.8months

That is 409% slower than the citywide median for apartments and multifamily.

Median months from filing to issue for plan-review permits. Sergio Mayorga Assc, apartments and multifamily: 31.8 months. San Francisco, apartments and multifamily: 6.2 months. Middle half of city permits: 2.7 to 12.3 months.
31.8 months for apartments and multifamily, faster than 2 of 106 other engineers ranked for apartments and multifamily that have a median for it Each circle is a firm's median for its plan-review permits for apartments and multifamily. Dashed line: the median of all San Francisco plan-review permits for apartments and multifamily, 6.2 months. Shaded: the middle half of those permits, 2.7 to 12.3 months.
0 6 12 18 24 30 36+ months Unicorn Consulting: 9.0 months Ecr Engineering: 4.1 months Double D Engineering: 10.8 months Altos Engineering: 4.4 months Atrium Structural Engineer: 12.8 months Rs Engineering: 17.9 months Enertia Designs: 13.9 months Lawrence Liao Str. Eng: 8.5 months Mercury Engineering Group: 9.4 months Ice Design Inc.: 17.9 months Kevin O'connor Inc.: 5.2 months Innovative Const: 20.2 months Design Consultants Group, Inc: 9.4 months Sia Consulting Corp: 17.7 months Mhc Engineers: 5.0 months Murphy Burr Curry Inc.: 6.9 months Hom & Pisano Engineering Inc.: 8.3 months Base Design: 13.1 months One Design: 17.3 months Erwin O'toole: 4.8 months Rei Build Up Design: 11.9 months W. Charles Perry & Assoc.: 20.1 months Yuflux Engineering Llc.: 8.1 months Acies Engineering: 3.4 months Kung Kay Chiu: 1.2 months Zfa Structural Engineers: 8.5 months Hcg Associates, Inc.: 13.3 months Telesis: 6.1 months Doug Lee: 22.9 months Q Architecture: 12.2 months Streamline Engineering: 5.3 months Nabi Const. & Engineering: 3.4 months Bkf Engineers: 13.5 months Smith Engineering, Inc.: 9.4 months Ftf Engineering Inc.: 4.6 months Degenkolb Engineers: 7.6 months Acg Engineers Inc: 6.8 months Kpff: 10.1 months Ny Engineering Consulting: 14.8 months Simpson Gumpertz & Heger: 13.2 months Dci Engineers: 3.5 months Semco Engineering Inc.: 9.7 months Ashley & Vance Engineering: 9.2 months Edesignc Incorporated: 7.5 months Mk Engineers Inc.: 12.7 months Engineering 350: 5.8 months A & J Design Associates Inc.: 9.2 months Interlocity: 5.6 months Dolmen Structural Engineer: 5.5 months Smw Associates: 26.1 months Access System & Solutions Inc: 7.8 months Bahman Ghassenmzadeh: 11.4 months Dominguez Associates: 13.3 months Wmstructural: 6.7 months Holmes Culley: 6.1 months Aj Miller And Associates: 2.8 months Interface Engineering: 3.3 months Emerald City: 5.9 months Thomas Podesta Engineer: 30.9 months Hohbach-Lewin, Inc: 13.1 months Soha Engineers: 9.8 months Optimal Design Group: 18.5 months Imeg: 6.5 months Spi Consulting Engineers, Inc.: 11.2 months Julia Y. Chen Design Inc.: 2.2 months Luk And Associates: 6.3 months Integrand Structural Engineer: 13.4 months Duquette Engineering: 8.5 months Kpff Consulting Engineers: 4.5 months S & P Structural Engineers: 33.0 months Framework Engineering: 11.9 months Lx Engineering: 6.8 months Pae: 8.8 months Powell And Associates: 16.6 months Tipping-Mar Structural Eng: 6.5 months Geissler Engineering: 46.9 months D H Charles: 2.2 months Urban Design Consulting Eng: 6.5 months Tommy Siu & Associates: 7.7 months Hc Structural Engineering Inc: 4.3 months Tuan & Robinson Str. Engineer: 8.4 months Gregory Miller Structural Eng.: 8.4 months Drill Tech: 2.8 months Meyers+Engineers: 5.2 months Bay City Mechanical Inc.: 10.4 months Jaime Neilson, P.E., S.E: 4.5 months Trylon Tsf: 5.6 months Edward C. Robinson, Pe: 4.9 months Brierley Associates: 2.7 months Mcginnis & Assoc Consulting: 8.2 months O'brien Mechanical Inc Ii: 6.5 months W.H.Yang Structural Engr: 30.1 months Ficcadenti Waggonen & Castle: 2.8 months Nishkian Menninger: 2.2 months J.W. Mcclenahan Co.: 19.9 months Nexius Solutions Inc: 10.3 months Tuan & Robinson Structural: 4.3 months Condon - Johnson & Assoc.: 8.7 months Calvin Abshier: 14.1 months Craig M. Horner: 17.0 months Desmond Blake: 0.9 months Earthbound: 8.9 months Rde Structural Engineering: 5.6 months Zeiger Engineers Inc.: 13.8 months Wm Tucker Associates: 3.0 months Gary L Hennings: 13.9 months Sergio Mayorga Assc 0 6 12 18 24 30 36+ months Unicorn Consulting: 9.0 months Ecr Engineering: 4.1 months Double D Engineering: 10.8 months Altos Engineering: 4.4 months Atrium Structural Engineer: 12.8 months Rs Engineering: 17.9 months Enertia Designs: 13.9 months Lawrence Liao Str. Eng: 8.5 months Mercury Engineering Group: 9.4 months Ice Design Inc.: 17.9 months Kevin O'connor Inc.: 5.2 months Innovative Const: 20.2 months Design Consultants Group, Inc: 9.4 months Sia Consulting Corp: 17.7 months Mhc Engineers: 5.0 months Murphy Burr Curry Inc.: 6.9 months Hom & Pisano Engineering Inc.: 8.3 months Base Design: 13.1 months One Design: 17.3 months Erwin O'toole: 4.8 months Rei Build Up Design: 11.9 months W. Charles Perry & Assoc.: 20.1 months Yuflux Engineering Llc.: 8.1 months Acies Engineering: 3.4 months Kung Kay Chiu: 1.2 months Zfa Structural Engineers: 8.5 months Hcg Associates, Inc.: 13.3 months Telesis: 6.1 months Doug Lee: 22.9 months Q Architecture: 12.2 months Streamline Engineering: 5.3 months Nabi Const. & Engineering: 3.4 months Bkf Engineers: 13.5 months Smith Engineering, Inc.: 9.4 months Ftf Engineering Inc.: 4.6 months Degenkolb Engineers: 7.6 months Acg Engineers Inc: 6.8 months Kpff: 10.1 months Ny Engineering Consulting: 14.8 months Simpson Gumpertz & Heger: 13.2 months Dci Engineers: 3.5 months Semco Engineering Inc.: 9.7 months Ashley & Vance Engineering: 9.2 months Edesignc Incorporated: 7.5 months Mk Engineers Inc.: 12.7 months Engineering 350: 5.8 months A & J Design Associates Inc.: 9.2 months Interlocity: 5.6 months Dolmen Structural Engineer: 5.5 months Smw Associates: 26.1 months Access System & Solutions Inc: 7.8 months Bahman Ghassenmzadeh: 11.4 months Dominguez Associates: 13.3 months Wmstructural: 6.7 months Holmes Culley: 6.1 months Aj Miller And Associates: 2.8 months Interface Engineering: 3.3 months Emerald City: 5.9 months Thomas Podesta Engineer: 30.9 months Hohbach-Lewin, Inc: 13.1 months Soha Engineers: 9.8 months Optimal Design Group: 18.5 months Imeg: 6.5 months Spi Consulting Engineers, Inc.: 11.2 months Julia Y. Chen Design Inc.: 2.2 months Luk And Associates: 6.3 months Integrand Structural Engineer: 13.4 months Duquette Engineering: 8.5 months Kpff Consulting Engineers: 4.5 months S & P Structural Engineers: 33.0 months Framework Engineering: 11.9 months Lx Engineering: 6.8 months Pae: 8.8 months Powell And Associates: 16.6 months Tipping-Mar Structural Eng: 6.5 months Geissler Engineering: 46.9 months D H Charles: 2.2 months Urban Design Consulting Eng: 6.5 months Tommy Siu & Associates: 7.7 months Hc Structural Engineering Inc: 4.3 months Tuan & Robinson Str. Engineer: 8.4 months Gregory Miller Structural Eng.: 8.4 months Drill Tech: 2.8 months Meyers+Engineers: 5.2 months Bay City Mechanical Inc.: 10.4 months Jaime Neilson, P.E., S.E: 4.5 months Trylon Tsf: 5.6 months Edward C. Robinson, Pe: 4.9 months Brierley Associates: 2.7 months Mcginnis & Assoc Consulting: 8.2 months O'brien Mechanical Inc Ii: 6.5 months W.H.Yang Structural Engr: 30.1 months Ficcadenti Waggonen & Castle: 2.8 months Nishkian Menninger: 2.2 months J.W. Mcclenahan Co.: 19.9 months Nexius Solutions Inc: 10.3 months Tuan & Robinson Structural: 4.3 months Condon - Johnson & Assoc.: 8.7 months Calvin Abshier: 14.1 months Craig M. Horner: 17.0 months Desmond Blake: 0.9 months Earthbound: 8.9 months Rde Structural Engineering: 5.6 months Zeiger Engineers Inc.: 13.8 months Wm Tucker Associates: 3.0 months Gary L Hennings: 13.9 months Sergio Mayorga Assc

1 firms with medians over 36 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 apartments and multifamily alone.

  1. 166 Cecilia Home 32
  2. 167 Edesignc Incorporated 32
  3. 168 Sergio Mayorga Assc 31
  4. 169 Hohbach-Lewin, Inc 31
  5. 170 Eas Designers 31

All permits issued, 1,146 engineers Full ranking

  1. 56 Ashley & Vance Engineering 23
  2. 57 Edesignc Incorporated 23
  3. 58 Sergio Mayorga Assc 23
  4. 59 Mk Engineers Inc. 22
  5. 60 Precision Design Inc. 22

Apartments and multifamily issued, 516 engineers

Where they work

The neighborhoods where Sergio Mayorga Assc files the most permits, and how many engineers count each one among their top 4 neighborhoods.

  1. 01 Presidio Heights 55 engineers count Presidio Heights among their busiest neighborhoods
  2. 02 Russian Hill 76 engineers count Russian Hill among their busiest neighborhoods
  3. 03 Pacific Heights 123 engineers count Pacific Heights among their busiest neighborhoods
  4. 04 Nob Hill 94 engineers count Nob Hill 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 engineers for apartments and multifamily

Firms ranked near Sergio Mayorga Assc by permits issued for apartments and multifamily.

  1. 55 Semco Engineering Inc. 23 apartments and multifamily issued · 9.7 mo median for apartments and multifamily
  2. 56 Ashley & Vance Engineering 23 apartments and multifamily issued · 9.2 mo median for apartments and multifamily
  3. 57 Edesignc Incorporated 23 apartments and multifamily issued · 7.5 mo median for apartments and multifamily
  4. 59 Mk Engineers Inc. 22 apartments and multifamily issued · 12.7 mo median for apartments and multifamily
  5. 60 Precision Design Inc. 22 apartments and multifamily issued
  6. 61 Engineering 350 22 apartments and multifamily issued · 5.8 mo median for apartments and multifamily
Sheet
S-168 No. 168 of 1,146
Drawing
Permit record, Sergio Mayorga Assc
Engineer, Pittsburg
License
C040929 check with BPELSG
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 Sergio Mayorga Assc has not paid to be listed. Project addresses are never shown.

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