At6 Design Build
At6 Design Build is a California corporation based in San Francisco (San Francisco County) with contractor license #283485 (B), first issued in 1973. CSLB status on Nov 9, 2026: Active, no violations. From Jan 1, 2025 to Nov 8, 2026, building departments recorded 5 permits under this name, 5 of them home projects (room addition, kitchen & bath, patio cover & deck). 80% of them were finaled by the city inspector. The median declared job value is $80,000. The latest permit is from Apr 15, 2026. The license lists a contractor bond and workers' compensation coverage.
Business phone (CSLB)
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License
| License # | 283485 |
|---|---|
| Status | Active, no violations |
| Classes | B |
| Business type | corporation |
| Issued / Expires | Apr 4, 1973 / Sep 30, 2027 |
| Contractor bond | Yes |
| Workers' comp | Yes, on file |
| Based in | San Francisco, San Francisco County |
Recent permits
| Date | Work | Area | Declared value | Status |
|---|---|---|---|---|
| Apr 15, 2026 | Room addition | 94114 · Castro/Upper Market / Noe Valley | $80,000 | Finaled |
| Apr 15, 2026 | Room addition | 94117 · Haight Ashbury / Hayes Valley | $250,000 | Issued |
| Mar 20, 2025 | Kitchen & bath remodel | 94131 · Noe Valley / Glen Park | $76,000 | Finaled |
| Jan 22, 2025 | Patio cover & deck | 94118 · Inner Richmond / Presidio Heights | $10,000 | Finaled |
| Jan 15, 2025 | Room addition | 94110 · Mission / Bernal Heights | $189,000 | Finaled |
Street addresses of homeowners are never shown.
Work on permits
Where they work
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