Sigma Construction Company
General contractor · San Francisco permit activity
General contractor active in San Francisco construction, tracked from public building-permit filings.
#563
by NYC filing activity
among NYC general contractors, last 90 days
7
project records
Sep 2025 to Jun 2026
2/16
active weeks
weeks with a filing (last 16)
7 projects
Scopes, declared values and this firm's role on each one
See 7 projects involving Sigma Construction Company
Recent projects involving this firm
West of Twin Peaks
Revision pa# 202512051070: to eliminate 3 proposed windows and to change size and/or operation…
$175K
Castro/Upper Market
Unit# 103: kitchen and bathroom remodel, like for like. new cabinets and countertops , new tile…
$50K
Glen Park
Remodel two bathrooms on the 3rd floor, no change to layout or structure
$25K
Neighbourhood, filing date, scope and declared value are shown here. Exact addresses, full filing histories and project teams are part of the paid product.
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7 project records for Sigma Construction Company: addresses, values, project teams
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Middle 50% of declared values: $12K–$80K (median $25K)
Most recent filing: West of Twin Peaks · Jun 25, 2026
2 active · 1 newly observed last 90 days
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Filing activity · last 16 weeks
APR
MAY
JUN
JUL
2
active projects (last 90d)
1
newly observed (last 90d)
Jun 2026
peak month
Project mix · by use
Residential100%
Geography · by borough
West of Twin Peaks57%
Castro/Upper Market15%
Glen Park14%
Sunset/Parkside14%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Studio Anh | Architecture | 1 | |
| 2 | Wm Structural | Engineering | 1 | |
| None on shared filings. | ||||
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 Sigma Construction Company filed?▾
PermitPipeline tracks 7 San Francisco building-permit projects for Sigma Construction Company (Sep 2025 to Jun 2026). 2 had filing activity in the last 90 days.
Does Sigma Construction Company work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Sigma Construction Company'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 Sigma Construction Company work?▾
57% of Sigma Construction Company's tracked San Francisco projects are in West of Twin Peaks.
What is a typical Sigma Construction Company project worth?▾
Across the 8 tracked projects with a declared value, Sigma Construction Company averages $46K per project (declared value on the permit filing, not contract value).
Which firms does Sigma Construction Company work with most often?▾
Sigma Construction Company most frequently appears on the same San Francisco permit filings as Studio Anh, Wm Structural. Appearing together indicates association on shared filings, not a proven working relationship.
Is Sigma Construction Company a general contractor?▾
Sigma Construction Company 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 DOB filings.
Public aggregate — full project records are part of the paid leads product. Updated daily from SF DBI filings.
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