Promethean Mechanical
Engineering firm · San Francisco permit activity
Engineering firm active in San Francisco construction, tracked from public building-permit filings.
#574
by NYC filing activity
among NYC architects & engineers, last 90 days
6
project records
Nov 2025 to May 2026
1/16
active weeks
weeks with a filing (last 16)
6 projects
Scopes, declared values and this firm's role on each one
See 6 projects involving Promethean Mechanical
Recent projects involving this firm
Financial District/South Beach
1. modify the central cooling plant. 2. existing chillers will be demolished, and new chillers…
$1.7M
Financial District/South Beach
Deferred mep for office ti permit 202603036821. spec suites 250 and 270
$950K
Hayes Valley
Mechanical energy compliance update to issued pa# 2025-09-09-4851. previously, the project…
$1
Neighbourhood, filing date, scope and declared value are shown here. Exact addresses, full filing histories and project teams are part of the paid product.
See every project involving Promethean Mechanical → start a 14-day trial
6 project records for Promethean Mechanical: addresses, values, project teams
Start 14-day free trial
Middle 50% of declared values: $55K–$950K (median $250K)
Most recent filing: Financial District/South Beach · May 14, 2026
1 active · 1 newly observed last 90 days
What brings you here?
One click. It shapes what we build next.
Filing activity · last 16 weeks
APR
MAY
JUN
JUL
1
active projects (last 90d)
1
newly observed (last 90d)
May 2026
peak month
Project mix · by use
Commercial100%
Geography · by borough
Financial District/South Beach67%
Hayes Valley17%
South of Market16%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Jg Engineers | Architecture | 2 | |
| 2 | Revel Architecture | Architecture | 1 | |
| 3 | Sj Engineers | Engineering | 1 | |
| 4 | Dci Engineers | Engineering | 1 | |
| 5 | Lincoln Lighthill Architect | Architecture | 1 | |
| 1 | Related California Construction Llc | General contractor | 1 | |
| 2 | Bradshaw Group Inc | General contractor | 1 | |
| 3 | Northern Sun Associates | General contractor | 1 | |
| 4 | Hathaway Dinwiddie Co. | General contractor | 1 |
Firms that appear on the same San Francisco permit filings. Association on shared filings, not a proven working relationship.
Frequently asked questions
How many SF projects has Promethean Mechanical filed?▾
PermitPipeline tracks 6 San Francisco building-permit projects for Promethean Mechanical (Nov 2025 to May 2026). 1 had filing activity in the last 90 days.
Does Promethean Mechanical work on commercial or residential projects?▾
Across its tracked San Francisco filings, 100% of Promethean Mechanical'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 Promethean Mechanical work?▾
67% of Promethean Mechanical's tracked San Francisco projects are in Financial District/South Beach.
What is a typical Promethean Mechanical project worth?▾
Across the 7 tracked projects with a declared value, Promethean Mechanical averages $448K per project (declared value on the permit filing, not contract value).
Which firms does Promethean Mechanical work with most often?▾
Promethean Mechanical most frequently appears on the same San Francisco permit filings as Jg Engineers, Related California Construction Llc, Revel Architecture. Appearing together indicates association on shared filings, not a proven working relationship.
Is Promethean Mechanical an engineering firm?▾
Promethean Mechanical is listed as an engineering firm on its San Francisco permit filings. Roles on this profile are derived from the role each firm holds on public DOB filings.
Public aggregate — full project records are part of the paid leads product. Updated daily from SF DBI filings.
Firm directories by market