San Francisco directory · Ranked by permits issued

San Francisco engineers ranked by building permits

1,146 engineers are named on San Francisco building permits filed since 2018, from home remodels to offices and restaurants. We rank them by how many permits the city issued, and show what kind of work they do and how long their permits took.

Updated October 20, 2026 · Nobody pays to be listed or ranked

Listed: 1,146
Filed in the last 2 years: 757
Mostly commercial work: 506

Where is the project?

Pick a neighborhood to see who works there most. Bars count the engineers for whom it is a top neighborhood.

All 40 neighborhoods in the list filter

Sheet: S-100
Drawing: Engineers in San Francisco
Source: SF DBI building permits since 2018
Date: Oct 2026
Scale: Not to scale
Drawn by: Bay Area Architect

1,146 listed, most permits issued first

No. 1

Their permits by project type, drawn as a plan.
1,687 issued
Unicorn Consulting

Engineer · License S5425 · San Francisco

Issued

1,687 of 1,803

All permits issued

94%

Median to issue

9.0 mo

Mostly apartments and multifamily 98% · home remodels 1% · ADUs 0%. Last filed Oct 2026.
Most active in
- Financial District/South Beach
- Nob Hill
- Russian Hill
- Tenderloin
2018 Permits filed per year 2026

Open profile
No. 2

Their permits by project type, drawn as a plan.
784 issued
Double D Engineering

Engineer · License S3928 · San Francisco

Issued

784 of 860

All permits issued

91%

Median to issue

10.8 mo

Mostly home remodels 50% · apartments and multifamily 34% · home additions 6%. Last filed Sep 2026.
Most active in
- Noe Valley
- West of Twin Peaks
- Mission
- Pacific Heights
2018 Permits filed per year 2026

Open profile
No. 3

Their permits by project type, drawn as a plan.
748 issued
Ecr Engineering

Engineer · License C76016 · San Francisco

Issued

748 of 823

All permits issued

91%

Median to issue

15.0 mo

Mostly home remodels 53% · apartments and multifamily 39% · home additions 3%. Last filed Oct 2026.
Most active in
- Mission
- Marina
- West of Twin Peaks
- Castro/Upper Market
2018 Permits filed per year 2026

Open profile

Ranked by building permits issued in San Francisco since 2018 with the firm named on the permit record. The line under each name shows the firm's two largest project types as a share of its permits. Median time covers all of a firm's plan-review permits of every type, and needs 3 or more issued with dates; the blue dimension line under it is drawn to scale, with the longest times running to the full width. Neighborhoods are where it filed the most permits of any type. A listing is not an endorsement, and nobody pays to be ranked. Some firms appear twice when the city recorded them under two names.

How to shortlist

1Pick two or three with issued permits for work like yours, in or near your neighborhood.
2Ask each for the permit numbers of recent projects and look them up on the DBI permit search.
3Check the license before you sign. Profiles with a license number link to the state lookup.
4 Ask how long their recent permits took. Citywide medians with plan review run from 3.9 months (offices) to 22.7 months (new homes).

What the numbers mean

Issued counts permits of every type the city issued with this firm on the record. "Of" is how many were filed.

Median to issue is months from filing to issue across all of a firm's plan-review permits, shown for 335 of 1,146 with 3 or more.

Full method

Source and notes

Source: San Francisco Department of Building Inspection building permits and permit contacts on DataSF. We include new-construction, plan-review and over-the-counter alteration permits filed since 2018, sorted into project types from the building's use and the permit description. Owner-builders and other private individuals are left out, and we never publish project addresses. Is your firm listed wrong? Send a correction.

Common questions

Which engineers have the most permits in San Francisco?

On city permit records since 2018, Unicorn Consulting is named on the most issued building permits among engineers (1,687 issued of 1,803 filed).

How long does a building permit take in San Francisco?

It depends on the project. For permits that went through plan review since 2018, the median ran from 3.9 months for offices to 22.7 months for new homes. Most small remodels are issued over the counter without full plan review.

How is this list ranked?

By the number of building permits issued in San Francisco since 2018 where the firm or person is named on the permit record in the city's public contacts data. Nobody pays to be listed or ranked. Sponsored placements, when they exist, are labeled and shown apart from the ranking.

Unicorn Consulting

Double D Engineering

Ecr Engineering

Common questions