Sigma Construction Company
Sigma Construction Company is a California sole owner based in Millbrae (San Mateo County) with contractor license #1009864 (B), first issued in 2015. CSLB status on Nov 9, 2026: Active, no violations. From Jan 1, 2025 to Nov 8, 2026, building departments recorded 6 permits under this name, 2 of them home projects (kitchen & bath, patio cover & deck). 67% of them were finaled by the city inspector. The median declared job value is $28,608. Most of the work was in 94127 · West of Twin Peaks. The latest permit is from Jun 26, 2026. The license lists a contractor bond and workers' compensation coverage.
Business phone (CSLB)
Before you sign, confirm the license is still active on the CSLB site, get a written contract and ask for the permit number for your job.
Is this your business? You can ask us to correct or remove this profile. hello@permitproven.com
License
| License # | 1009864 |
|---|---|
| Status | Active, no violations |
| Classes | B |
| Business type | sole owner |
| Issued / Expires | Dec 21, 2015 / Dec 31, 2027 |
| Contractor bond | Yes |
| Workers' comp | Yes, on file |
| Based in | Millbrae, San Mateo County |
Recent permits
| Date | Work | Area | Declared value | Status |
|---|---|---|---|---|
| Jun 26, 2026 | Other permits | 94127 · West of Twin Peaks | – | Finaled |
| Jan 15, 2026 | Patio cover & deck | 94127 · West of Twin Peaks | $350,000 | Finaled |
| Oct 21, 2025 | HVAC, plumbing & electrical | 94122 · Sunset/Parkside / Inner Sunset | $80,000 | Issued |
| Sep 29, 2025 | Other permits | 94127 · West of Twin Peaks | $1,000 | Finaled |
| Sep 29, 2025 | Kitchen & bath remodel | 94127 · West of Twin Peaks | $45,215 | Cancelled |
| Sep 22, 2025 | Other permits | 94127 · West of Twin Peaks | $12,000 | Finaled |
Street addresses of homeowners are never shown.
Work on permits
Where they work
Similar contractors in Millbrae
- Liang General Construction INCMillbrae · #928524 · 17 permits
- Gil Construction & Assoc INC.Millbrae · #703705 · 68 permits
- Green City Construction INCMillbrae · #951276 · 10 permits
- Arcline Development INCMillbrae · #1145576 · 8 permits
- Hong Shink ConstructionMillbrae · #758888 · 8 permits
- Pro H & M Construction INCMillbrae · #1090250 · 8 permits
- RM Wong Construction CompanyMillbrae · #1126170 · 3 permits
- Arthur NG ConstructionMillbrae · #1126874 · 3 permits