3 N 1 Construction INC.
3 N 1 Construction INC. is a California corporation based in South San Francisco (San Mateo County) with contractor license #1005965 (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 7 permits under this name, 4 of them home projects (kitchen & bath, room addition). 100% of them were finaled by the city inspector. The median declared job value is $28,000. Most of the work was in 94116 · Sunset/Parkside / West of Twin Peaks. The latest permit is from Apr 30, 2026. The license lists a contractor bond and an exemption from workers' compensation (no employees).
Business phone (CSLB)
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License
| License # | 1005965 |
|---|---|
| Status | Active, no violations |
| Classes | B |
| Business type | corporation |
| Issued / Expires | Jul 29, 2015 / Jun 30, 2028 |
| Contractor bond | Yes |
| Workers' comp | Exempt (no employees) |
| Based in | South San Francisco, San Mateo County |
Recent permits
| Date | Work | Area | Declared value | Status |
|---|---|---|---|---|
| Apr 30, 2026 | Kitchen & bath remodel | 94121 · Outer Richmond / Seacliff | $28,000 | Finaled |
| Jan 16, 2026 | Other permits | 94116 · Sunset/Parkside / West of Twin Peaks | $1,300 | Finaled |
| Dec 1, 2025 | Other permits | 94122 · Sunset/Parkside / Inner Sunset | $25,000 | Finaled |
| Aug 19, 2025 | Other permits | 94116 · Sunset/Parkside / West of Twin Peaks | $10,000 | Finaled |
| Feb 26, 2025 | Room addition | 94116 · Sunset/Parkside / West of Twin Peaks | $47,571 | Finaled |
| Jan 15, 2025 | Kitchen & bath remodel | 94122 · Sunset/Parkside / Inner Sunset | $28,000 | Finaled |
| Jan 15, 2025 | Kitchen & bath remodel | 94116 · Sunset/Parkside / West of Twin Peaks | $28,000 | Finaled |
Street addresses of homeowners are never shown.
Work on permits
Where they work
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