Bay City Boiler & Engineering Co. Inc. is a plumbing contractor with 7 tracked San Francisco building-permit projects on record, with the latest filing in that record 64 days ago. Its filings (Jan 2025 to Jun 2026) are concentrated in Golden Gate Park and Mission, 100% residential. A typical project in the record declares $10K–$239K. If you work at Bay City Boiler & Engineering Co. Inc., claim this page to add a description.
Filed 64 days ago
#1,240
by SF filing activity
among SF specialty contractors, 90 days to Oct 4, 2026
7
projects
from 29 filings
4/16
active weeks
weeks with a filing (16 weeks to Oct 4, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$54K Twin Peaks multifamily renovation
Active 11 months ago · Bay City Boiler & Engineering Co.: specialty contractor
Relocate electrical panel from closet. wire kitchen receptacles to code. dishwasher. hood fan. fridge. 1 x sd/co
GC named · Design firm identified · 2 specialty contractors identified
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Mission renovation
Active 3 months ago · 3 filings · Bay City Boiler & Engineering Co.: specialty contractor
Work category: 2pb; repair sewer lateral and house trap citation number
No GC named · Specialty contractor identified
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$239K Nob Hill multifamily renovation
Last active Jan 2025 · Bay City Boiler & Engineering Co.: specialty contractor
Life safety witness test for 6 hours. ref#: e202508204907
GC named · Design firm identified · 2 specialty contractors identified
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4 more
Bay City Boiler & Engineering Co. 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.
7 project records for Bay City Boiler & Engineering Co. Inc.: addresses, values, project teams
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Typical project$10K–$239K$54K typicalLast filed64 days agoPotrero Hill · Aug 4, 2026Last 90 days1 active0 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
Golden Gate Park20%
Mission20%
Nob Hill20%
Potrero Hill20%
South of Market20%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Acco Engineered Systems Inc. | Architecture | 1 | |
| 1 | Greene & Company Inc | Plumbing contractor | 2 | |
| 2 | Ayoob & Peery Plumbing | General contractor | 1 | |
| 3 | B B J Electric, Inc | General contractor | 1 | |
| 4 | Eco Fire Sprinklers Inc | General contractor | 1 | |
| 5 | M. Gaehwiler Construction 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 relationships1 firmFirms this one appears with on more than one project, out of 14 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does Bay City Boiler & Engineering Co. Inc. appear on?▾
PermitPipeline tracks 7 San Francisco building-permit projects for Bay City Boiler & Engineering Co. Inc. (Jan 2025 to Jun 2026). 1 had filing activity in the last 90 days.
Does Bay City Boiler & Engineering Co. Inc. work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Bay City Boiler & Engineering Co. 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 Bay City Boiler & Engineering Co. Inc. work?▾
20% of Bay City Boiler & Engineering Co. Inc.'s tracked San Francisco projects are in Golden Gate Park.
What is a typical Bay City Boiler & Engineering Co. Inc. project worth?▾
The median declared value across the 4 San Francisco projects Bay City Boiler & Engineering Co. Inc. has on record that state one is $54K (declared value on the permit filing, not contract value).
Which firms appear most often on the same filings as Bay City Boiler & Engineering Co. Inc.?▾
Bay City Boiler & Engineering Co. Inc. most frequently appears on the same San Francisco permit filings as Greene & Company Inc, Acco Engineered Systems Inc., Ayoob & Peery Plumbing. Appearing together indicates association on shared filings, not a proven working relationship.
Is Bay City Boiler & Engineering Co. Inc. a plumbing contractor?▾
Bay City Boiler & Engineering Co. Inc. 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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