Sigma Construction Company
General contractor · San Francisco permit activity
General contractor active in San Francisco construction, tracked from public building-permit filings.
#563
by SF filing activity
among SF general contractors, last 90 days
7
projects tracked
Sep 2025 to Jun 2026
2/16
active weeks
weeks with a filing (last 16)
Every Sigma Construction Company project: scopes, declared values, teams and filing history.
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$175K West of Twin Peaks renovation
Filed 1 month ago · 2 filings · Sigma Construction Company: GC
Revision: to eliminate 3 proposed windows and to change size and/or operation of 7 windows
GC named · Architect identified · Engineer identified
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$50K Castro/Upper Market renovation
Filed 1 month ago · Sigma Construction Company: GC
Kitchen and bathroom remodel, like for like. new cabinets and countertops, new tile in bathroom. fixtures and appliances. electrical…
GC named
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$25K Glen Park renovation
Filed 4 months ago · Sigma Construction Company: GC
Remodel two bathrooms on the 3rd floor, no change to layout or structure
GC named
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4 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 and contact details and full filing histories are part of the paid product.
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
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 neighborhood
West of Twin Peaks57%
Castro/Upper Market15%
Glen Park14%
Sunset/Parkside14%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Studio Anh | Architecture | 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 Wm Structural, Studio Anh. 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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