O'sullivan Engineering
Engineering firm · San Francisco permit activity
Engineering firm active in San Francisco construction, tracked from public building-permit filings.
#138
by NYC filing activity
among NYC architects & engineers, last 90 days
5
project records
Jun 2026 to Jul 2026
5/16
active weeks
weeks with a filing (last 16)
5 projects
Scopes, declared values and this firm's role on each one
See 5 projects involving O'sullivan Engineering
Recent projects involving this firm
Sunset/Parkside
Remodeling the upstairs kitchen. raising the ceiling height of the kitchen within the building…
$45K
Sunset/Parkside
2 story horizontal addition to the rear of the house, partial interior remodel, including a…
$277K
Sunset/Parkside
Converting portion of the garage into living area. adding a bathroom, concrete patio in the…
$200K
Neighbourhood, filing date, scope and declared value are shown here. Exact addresses, full filing histories and project teams are part of the paid product.
See every project involving O'sullivan Engineering → start a 14-day trial
5 project records for O'sullivan Engineering: addresses, values, project teams
Start 14-day free trial
Middle 50% of declared values: $60K–$247K (median $200K)
Most recent filing: Sunset/Parkside · Jul 28, 2026
5 active · 5 newly observed last 90 days
What brings you here?
One click. It shapes what we build next.
Filing activity · last 16 weeks
APR
MAY
JUN
JUL
5
active projects (last 90d)
5
newly observed (last 90d)
Jul 2026
peak month
Project mix · by use
Residential100%
Geography · by borough
Sunset/Parkside80%
West of Twin Peaks20%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Openscope Studio | Architecture | 1 | |
| 2 | Steven Whitney, Architect | Architecture | 1 | |
| 1 | Foxtail Hill Windows & Doors Inc | 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 O'sullivan Engineering filed?▾
PermitPipeline tracks 5 San Francisco building-permit projects for O'sullivan Engineering (Jun 2026 to Jul 2026). 5 had filing activity in the last 90 days.
Does O'sullivan Engineering work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of O'sullivan Engineering'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 O'sullivan Engineering work?▾
80% of O'sullivan Engineering's tracked San Francisco projects are in Sunset/Parkside.
What is a typical O'sullivan Engineering project worth?▾
Across the 5 tracked projects with a declared value, O'sullivan Engineering averages $166K per project (declared value on the permit filing, not contract value).
Which firms does O'sullivan Engineering work with most often?▾
O'sullivan Engineering most frequently appears on the same San Francisco permit filings as Openscope Studio, Steven Whitney, Architect, Foxtail Hill Windows & Doors Inc. Appearing together indicates association on shared filings, not a proven working relationship.
Is O'sullivan Engineering an engineering firm?▾
O'sullivan Engineering 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