Marin Mechanical Inc is a plumbing contractor with 5 tracked San Francisco building-permit projects on record, with the latest filing in that record 35 days ago. Its filings (Jul 2025 to May 2026) are concentrated in Bernal Heights and Japantown, 100% residential. A typical project in the record declares $30K–$55K. If you work at Marin Mechanical Inc, claim this page to add a description.
Filed 35 days ago
#753
by SF filing activity
among SF specialty contractors, 90 days to Aug 23, 2026
5
projects
from 18 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
$120K Oceanview/Merced/Ingleside single-family renovation
Grade BActive 4 months ago · Marin Mechanical: specialty contractor
Work category: 11p; inspection of (2) shower pans
GC named · 2 specialty contractors identified
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$86K Bernal Heights single-family renovation
Grade BActive 3 months ago · Marin Mechanical: specialty contractor
Remodel of sfd, new wood siding in place of (e), remodel (e) 3rd floor bathroom (in kind replacement of fixtures). replacement 3rd floor…
GC named · Architect identified · Design firm identified · Specialty contractor identified
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$6K Noe Valley single-family renovation
Grade DActive 5 months ago · Marin Mechanical: specialty contractor
Replace stairs to storage attic, prefabricate
GC named · Specialty contractor identified
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2 more
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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.
5 project records for Marin Mechanical Inc: addresses, values, project teams
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Typical project$30K–$55K$50K typical2.9× the SF median ($17K)Last filed35 days agoJapantown · Aug 13, 2026Last 90 days2 active0 newly filed
Filing activity · 16 weeks to Aug 23, 2026 · peak Jun 2026
MAY
JUN
JUL
AUG
Project mix · by use
Residential100%
Geography · by neighborhood
Bernal Heights20%
Japantown20%
Noe Valley20%
Oceanview/Merced/Ingleside20%
Outer Richmond20%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Blue Truck Inc. | Architecture | 1 | |
| 2 | Gregory Paul Wallace | Architecture | 1 | |
| 1 | Todd Felix Costanza | General contractor | 2 | |
| 2 | GPM Electric LLC | Electrical contractor | 2 | |
| 3 | Aguilar Construction | General contractor | 1 | |
| 4 | Lindquist Custom Construction Inc | General contractor | 1 | |
| 5 | Planart Construction Corp | 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 relationships2 firmsFirms this one appears with on more than one project, out of 8 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does Marin Mechanical Inc appear on?▾
PermitPipeline tracks 5 San Francisco building-permit projects for Marin Mechanical Inc (Jul 2025 to May 2026). 2 had filing activity in the last 90 days.
Does Marin Mechanical Inc work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Marin Mechanical 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 Marin Mechanical Inc work?▾
20% of Marin Mechanical Inc's tracked San Francisco projects are in Bernal Heights.
What is a typical Marin Mechanical Inc project worth?▾
The median declared value across the 5 San Francisco projects Marin Mechanical Inc has on record that state one is $50K (declared value on the permit filing, not contract value).
Which firms appear most often on the same filings as Marin Mechanical Inc?▾
Marin Mechanical Inc most frequently appears on the same San Francisco permit filings as Todd Felix Costanza, GPM Electric LLC, Aguilar Construction. Appearing together indicates association on shared filings, not a proven working relationship.
Is Marin Mechanical Inc a plumbing contractor?▾
Marin Mechanical 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 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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