O'sullivan & Son Construction Inc
General contractor · San Francisco permit activity
General contractor active in San Francisco construction, tracked from public building-permit filings.
#639
by NYC filing activity
among NYC general contractors, last 90 days
4
project records
Jan 2025 to Jul 2026
2/16
active weeks
weeks with a filing (last 16)
4 projects
Scopes, declared values and this firm's role on each one
See 4 projects involving O'sullivan & Son Construction
Recent projects involving this firm
Pacific Heights
Unit 1505: demo wall, demo kitchen coutnertops and bathroom top. replace in-kind, new faucets…
$7K
Marina
Revision to pa# 202604109240: includes updates to windows at rear adn northern elevations,…
$195K
West of Twin Peaks
Remove existing countertop and replace with new countertop in kitchen
$2K
Neighbourhood, filing date, scope and declared value are shown here. Exact addresses, full filing histories and project teams are part of the paid product.
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4 project records for O'sullivan & Son Construction: addresses, values, project teams
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Middle 50% of declared values: $2K–$195K (median $7K)
Most recent filing: Pacific Heights · Jul 28, 2026
2 active · 1 newly observed last 90 days
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Filing activity · last 16 weeks
APR
MAY
JUN
JUL
2
active projects (last 90d)
1
newly observed (last 90d)
Jul 2026
peak month
Project mix · by use
Residential100%
Geography · by borough
Pacific Heights50%
Marina25%
West of Twin Peaks25%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Aleck Wilson Architects | Architecture | 2 | |
| 2 | Zfa Structural Engineers | Architecture | 1 | |
| None on shared filings. | ||||
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 & Son Construction Inc filed?▾
PermitPipeline tracks 4 San Francisco building-permit projects for O'sullivan & Son Construction Inc (Jan 2025 to Jul 2026). 2 had filing activity in the last 90 days.
Does O'sullivan & Son Construction Inc work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of O'sullivan & Son Construction Inc'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 & Son Construction Inc work?▾
50% of O'sullivan & Son Construction Inc's tracked San Francisco projects are in Pacific Heights.
What is a typical O'sullivan & Son Construction Inc project worth?▾
Across the 5 tracked projects with a declared value, O'sullivan & Son Construction Inc averages $41K per project (declared value on the permit filing, not contract value).
Which firms does O'sullivan & Son Construction Inc work with most often?▾
O'sullivan & Son Construction Inc most frequently appears on the same San Francisco permit filings as Aleck Wilson Architects, Zfa Structural Engineers. Appearing together indicates association on shared filings, not a proven working relationship.
Is O'sullivan & Son Construction Inc a general contractor?▾
O'sullivan & Son Construction Inc is listed as a general contractor 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.
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