trinitybuildingco.com(415) 857-1920info@trinitybuildingco.comLinkedIn156 Mississippi St, San Francisco, CA 94107
Trinity Building Co LLC is a general contractor with 3 tracked San Francisco building-permit projects on record, with the latest filing in that record 219 days ago. Its filings (Sep 2025 to Mar 2026) are concentrated in Castro/Upper Market and Mission, 100% residential. If you work at Trinity Building Co LLC, claim this page to add a description.
Filed 219 days ago
#2,408
by SF filing activity
among SF general contractors, 90 days to Oct 4, 2026
3
projects
from 10 filings
0/16
active weeks
weeks with a filing (16 weeks to Oct 4, 2026)
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Permit-backed projects · PermitPipeline’s independent record
Castro/Upper Market single-family renovation
Active 7 months ago · Trinity Building Co: GC
To keep existing ground floor storage space to be used for storage purposes only. not to be considered habitable space. also remove the wet…
GC named · Architect identified · Engineer identified
View project details →
Mission multifamily renovation
Active 8 months ago · Trinity Building Co: GC
To obtain final inspection for work approved under. all work is complete
GC named · 2 specialty contractors identified
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1 more
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3 project records for Trinity Building Co LLC: addresses, values, project teams
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Declared values3 on filetoo few for a rangeLast filed219 days agoCastro/Upper Market · Mar 2, 2026Last 90 days0 active0 newly filed
Filing activity · 16 weeks to Oct 4, 2026
JUN
JUL
AUG
SEP
Project mix · by use
Residential100%
Geography · by neighborhood
Castro/Upper Market67%
Mission33%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | One Design | Architecture | 2 | |
| 1 | Dill Plumbing Co | Plumbing contractor | 2 | |
| 2 | Luminalt Energy Corporation | General contractor | 1 | |
| 3 | Blaze Fireplaces Of No Cal | Plumbing contractor | 1 | |
| 4 | Five Star Plumbing & Rooter | General contractor | 1 | |
| 5 | Platinum Power Inc | Electrical 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 licenseCSLB Contractor #1002911As filed on 1 permit
Repeat working relationships2 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 Trinity Building Co LLC appear on?▾
PermitPipeline tracks 3 San Francisco building-permit projects for Trinity Building Co LLC (Sep 2025 to Mar 2026). 0 had filing activity in the last 90 days.
Does Trinity Building Co LLC work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Trinity Building Co LLC'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 Trinity Building Co LLC work?▾
67% of Trinity Building Co LLC's tracked San Francisco projects are in Castro/Upper Market.
Which firms appear most often on the same filings as Trinity Building Co LLC?▾
Trinity Building Co LLC most frequently appears on the same San Francisco permit filings as One Design, Dill Plumbing Co, Luminalt Energy Corporation. Appearing together indicates association on shared filings, not a proven working relationship.
Is Trinity Building Co LLC a general contractor?▾
Trinity Building Co LLC 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 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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