Cornerstone Roofing INC
Cornerstone Roofing INC is a California corporation based in Sebastopol (Sonoma County) with contractor license #909400 (C-39), first issued in 2008. CSLB status on Nov 9, 2026: Active, no violations. From Jan 1, 2025 to Nov 8, 2026, building departments recorded 1 permit under this name, 1 of them home projects (roofing). The latest permit is from Apr 1, 2025. The license lists a contractor bond and workers' compensation coverage.
1permit 2025–26
1home-project permit
18years licensed
Apr 1, 2025latest permit
Business phone (CSLB)
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License
| License # | 909400 |
|---|---|
| Status | Active, no violations |
| Classes | C-39 |
| Business type | corporation |
| Issued / Expires | Jan 18, 2008 / Jan 31, 2028 |
| Contractor bond | Yes |
| Workers' comp | Yes, on file |
| Based in | Sebastopol, Sonoma County |
Recent permits
| Date | Work | Area | Declared value | Status |
|---|---|---|---|---|
| Apr 1, 2025 | Roofing | 94904 · Kentfield | $70,441 | Issued |
Street addresses of homeowners are never shown.
Work on permits
Roofing · 1 permit
Where they work
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