ciwsplumbing.com1501 Palou Avenue, San Francisco, CA 94124
C I W And Sons Plumbing is a plumbing contractor with 3 tracked San Francisco building-permit projects on record, with the latest filing in that record 31 days ago. Its filings (Apr 2025 to Aug 2026) are concentrated in Bayview Hunters Point and South of Market, 100% commercial. If you work at C I W And Sons Plumbing, claim this page to add a description.
Filed 31 days ago
#843
by SF filing activity
among SF specialty contractors, 90 days to Aug 23, 2026
3
projects
from 13 filings
6/16
active weeks
weeks with a filing (16 weeks to Aug 23, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$125K Bayview Hunters Point tenant improvement
Grade BActive 23 days ago · C I W And Sons Plumbing: specialty contractor
Ground floor-commercial tenant improvement - (n) bookstore and cafe at (e) vacant ground floor commercial space. (n) finishes and…
GC named · Architect identified · Specialty contractor identified
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South of Market renovation
Grade DActive 1 month ago · C I W And Sons Plumbing: specialty contractor
Administrative permit to establish occupancy load as follow up to dbi site (an ab-004 city priority project)
GC named · Architect identified · Engineer identified · 2 specialty contractors identified
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Bayview Hunters Point commercial renovation
Last active Apr 2025 · C I W And Sons Plumbing: specialty contractor
Gas line pressure test
No GC named
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Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
owner names and mailing addresses, and full filing histories are part of the paid product.
3 project records for C I W And Sons Plumbing: addresses, values, project teams
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Declared values3 on filetoo few for a rangeLast filed31 days agoBayview Hunters Point · Aug 17, 2026Last 90 days2 active2 newly filed
Filing activity · 16 weeks to Aug 23, 2026 · peak Aug 2026
MAY
JUN
JUL
AUG
Project mix · by use
Commercial100%
Geography · by neighborhood
Bayview Hunters Point67%
South of Market33%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Mark Cavagnero Associates | Architecture | 1 | |
| 2 | Steiner Architects | Architecture | 1 | |
| 1 | Mc Millan Electric | General contractor | 1 | |
| 2 | Pierson Precision Construction Inc | General contractor | 1 | |
| 3 | Dyna Maids Inc | Electrical contractor | 1 | |
| 4 | Value Fire Protection Inc | General contractor | 1 |
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Owner and developer names, and the projects behind each connection, are part of the Leads product.
Firms that appear on the same San Francisco permit filings. Association on shared filings, not a proven working relationship.
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State licenseNot connectedTrade licenses are held by BPELSG. That register is not part of the San Francisco permit record, and we do not yet read it.
Repeat working relationships0 firmsFirms this one appears with on more than one project, out of 6 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does C I W And Sons Plumbing appear on?▾
PermitPipeline tracks 3 San Francisco building-permit projects for C I W And Sons Plumbing (Apr 2025 to Aug 2026). 2 had filing activity in the last 90 days.
Does C I W And Sons Plumbing work on commercial or residential projects?▾
Across its tracked San Francisco filings, 100% of C I W And Sons Plumbing's projects are commercial and 0% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does C I W And Sons Plumbing work?▾
67% of C I W And Sons Plumbing's tracked San Francisco projects are in Bayview Hunters Point.
Which firms appear most often on the same filings as C I W And Sons Plumbing?▾
C I W And Sons Plumbing most frequently appears on the same San Francisco permit filings as Mark Cavagnero Associates, Mc Millan Electric, Pierson Precision Construction Inc. Appearing together indicates association on shared filings, not a proven working relationship.
Is C I W And Sons Plumbing a plumbing contractor?▾
C I W And Sons Plumbing is listed as a plumbing contractor on its San Francisco permit filings. Roles on this profile are derived from the role each firm holds on public SF DBI filings.
Public aggregate — full project records are part of the paid leads product. Ranking, filing activity, project mix and geography were last recomputed Aug 23, 2026. Project counts, declared values and filing dates are read live from SF DBI filings.
How far back does this record go?▾
This page covers the recent permit record, not the firm’s full history. A firm’s earliest filing here means it was already working when our record opens, not that it started then.
Sources
San Francisco Department of Building Inspection permit filings.
Record source
Read directly from SF DBI filings.
Photography
None are shown until the firm supplies them.
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