Salas O'brien
Engineering firm · San Francisco permit activity
Engineering firm active in San Francisco construction, tracked from public building-permit filings.
#783
by SF filing activity
among SF architects & engineers, last 90 days
3
projects tracked
Jul 2025 to May 2026
1/16
active weeks
weeks with a filing (last 16)
Every Salas O'brien project: scopes, declared values, teams and filing history.
Start your 14-day trialSelect Salas O'brien projects
$200K Outer Mission renovation
Filed 2 months ago · Salas O'brien: engineer
Remove & install 4,000 gallon above ground storage tank. connect (e) underground double wall piping to new ast. upgrade tank monitoring…
No GC named · Architect identified
View project details →
$6K Marina renovation
Filed 6 months ago · Salas O'brien: engineer
Revision tpo. locally thicken existing grade beam on 2 different walls
GC named · 1 other firm identified
View project details →
$10K Hayes Valley renovation
Filed Jul 2025 · Salas O'brien: engineer
Demolition existing duplex sewage injector pumps and replace w/new. provide & install self contained duplex alternating ejector pumps in…
No GC named
View project details →
Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
owner and contact details and full filing histories are part of the paid product.
3 project records for Salas O'brien: addresses, values, project teams
Start 14-day free trial
Most recent filing: Outer Mission · May 19, 2026
1 active · 1 newly observed last 90 days
Filing activity · last 16 weeks
APR
MAY
JUN
JUL
1
active projects (last 90d)
1
newly observed (last 90d)
May 2026
peak month
Project mix · by use
Residential100%
Geography · by neighborhood
Hayes Valley34%
Marina33%
Outer Mission33%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| None on shared filings. | ||||
| 1 | Jv Services | General contractor | 1 | |
Firms that appear on the same San Francisco permit filings. Association on shared filings, not a proven working relationship.
Frequently asked questions
How many SF projects has Salas O'brien filed?▾
PermitPipeline tracks 3 San Francisco building-permit projects for Salas O'brien (Jul 2025 to May 2026). 1 had filing activity in the last 90 days.
Does Salas O'brien work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Salas O'brien's projects are commercial and 100% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Salas O'brien work?▾
33% of Salas O'brien's tracked San Francisco projects are in Hayes Valley.
What is a typical Salas O'brien project worth?▾
Across the 3 tracked projects with a declared value, Salas O'brien averages $72K per project (declared value on the permit filing, not contract value).
Which firms does Salas O'brien work with most often?▾
Salas O'brien most frequently appears on the same San Francisco permit filings as STANTEC, Jv Services. Appearing together indicates association on shared filings, not a proven working relationship.
Is Salas O'brien an engineering firm?▾
Salas O'brien is listed as an engineering firm on its San Francisco permit filings. Roles on this profile are derived from the role each firm holds on public DOB filings.
Public aggregate — full project records are part of the paid leads product. Updated daily from SF DBI filings.
Firm directories by market