130 Rae Ave, San Francisco, CA 94112
West Bay Plumbing is a plumbing contractor with 48 tracked San Francisco building-permit projects on record, with the latest filing in that record 51 days ago. Its filings (Jan 2025 to Aug 2026) are concentrated in Castro/Upper Market and West of Twin Peaks, 100% residential. A typical project in the record declares $10K–$80K. If you work at West Bay Plumbing, claim this page to add a description.
Filed 51 days ago
#43
by SF filing activity
among SF specialty contractors, 90 days to Oct 4, 2026
48
projects
from 154 filings
9/16
active weeks
weeks with a filing (16 weeks to Oct 4, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$150K Castro/Upper Market single-family renovation
Grade BActive 4 months ago · West Bay Plumbing: specialty contractor
Kitchen and bathroom remodel
GC named · Architect identified · 2 engineers identified · Specialty contractor identified
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$125K Castro/Upper Market multifamily renovation
Grade BActive 5 months ago · West Bay Plumbing: specialty contractor
Work category: 1p; remodel kitchen: rough in trim out plumbing. waste, vent, hot and cold water supply pipes
GC named · Architect identified · Engineer identified · 2 specialty contractors identified
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$70K Marina multifamily renovation
Grade BActive 4 months ago · West Bay Plumbing: specialty contractor
Work category: 2pa; remodel 2 bathroom: waste, vent, hot and cold water supply pipes. 2 shower pans
GC named · Specialty contractor identified
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45 more
West Bay Plumbing projects with project intelligence
Scopes, values, teams and filing history for every one
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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.
48 project records for West Bay Plumbing: addresses, values, project teams
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Typical project$10K–$80K$30K typical1.8× the SF median ($17K)Last filed51 days agoHaight Ashbury · Aug 17, 2026Last 90 days11 active2 newly filed
Filing activity · 16 weeks to Oct 4, 2026 · peak Jun 2026
JUN
JUL
AUG
SEP
Project mix · by use
Residential100%
Geography · by neighborhood
Castro/Upper Market29%
West of Twin Peaks21%
Haight Ashbury17%
Outer Richmond17%
Sunset/Parkside16%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Cassandra Mettling Davis | Architecture | 2 | |
| 2 | Ecr Engineering | Architecture | 2 | |
| 3 | Kotas/Pantaleoni Architects | Architecture | 2 | |
| 4 | Architect SF | Architecture | 1 | |
| 5 | Atrium Structural Engineering | Architecture | 1 | |
| 1 | Darc Ventures Inc Dba SPL Construction S | General contractor | 5 | |
| 2 | Pauric Electric | Electrical contractor | 5 | |
| 3 | Kevin Francis Rafferty Electric | Electrical contractor | 4 | |
| 4 | Fastnet Engineering & Const Inc | General contractor | 3 | |
| 5 | Hawthorne Construction | General contractor | 3 |
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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 relationships20 firmsFirms this one appears with on more than one project, out of 62 in total.
Permit speed28 days5 days longer than the SF median
based on 5 firm filings vs 5,089 SF filings
based on 5 firm filings vs 5,089 SF filings
Frequently asked questions
How many SF projects does West Bay Plumbing appear on?▾
PermitPipeline tracks 48 San Francisco building-permit projects for West Bay Plumbing (Jan 2025 to Aug 2026). 11 had filing activity in the last 90 days.
Does West Bay Plumbing work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of West Bay Plumbing'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 West Bay Plumbing work?▾
29% of West Bay Plumbing's tracked San Francisco projects are in Castro/Upper Market.
What is a typical West Bay Plumbing project worth?▾
The median declared value across the 40 San Francisco projects West Bay Plumbing has on record that state one is $30K (declared value on the permit filing, not contract value).
Which firms appear most often on the same filings as West Bay Plumbing?▾
West Bay Plumbing most frequently appears on the same San Francisco permit filings as Darc Ventures Inc Dba SPL Construction S, Pauric Electric, Kevin Francis Rafferty Electric. Appearing together indicates association on shared filings, not a proven working relationship.
Is West Bay Plumbing a plumbing contractor?▾
West Bay 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 Oct 4, 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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