ENRUES

Gannon Construction Company

Gannon Construction Company is a California corporation based in San Rafael (Marin County) with contractor license #544989 (A, B), first issued in 1988. CSLB status on Nov 9, 2026: Active, no violations. From Jan 1, 2025 to Nov 8, 2026, building departments recorded 4 permits under this name, 4 of them home projects (kitchen & bath, ADU, room addition). The latest permit is from Sep 16, 2026. The license lists a contractor bond and workers' compensation coverage.

4permits 2025–26
4home-project permits
38years licensed
Sep 16, 2026latest permit

(415) 482-1675

Business phone (CSLB)

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License

License #544989
StatusActive, no violations
ClassesA, B
Business typecorporation
Issued / ExpiresOct 21, 1988 / Sep 30, 2027
Contractor bondYes
Workers' compYes, on file
Based inSan Rafael, Marin County

Recent permits

DateWorkAreaDeclared valueStatus
Sep 16, 2026Patio cover & deck94941 · Mill Valley$150,000Issued
Jul 24, 2026Room addition94941 · Mill Valley$300,000Issued
Jun 12, 2025ADU / granny flat94941 · Mill Valley$150,000Issued
Jan 16, 2025Kitchen & bath remodel94920 · Tiburon$150,000Issued

Street addresses of homeowners are never shown.

Work on permits

Kitchen & bath remodel · 1 permitADU / granny flat · 1 permitRoom addition · 1 permitPatio cover & deck · 1 permit

Where they work

94941 · Mill Valley · 3 permits94920 · Tiburon · 1 permit

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