ADU CITIES Contractor Directory

Williams Construction Co

● Active — license status verified against CSLB public data as of November 6, 2026

☎ Call (818) 439-0155Verify this license at CSLB
CSLB license#365134
ClassificationsB — General Building
Office of recordP O Box 6539
Los Osos, CA 93412
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(818) 439-0155
Contractor bond$25,000 — Ohio Casualty Insurance Company (the)
Workers' comp (CSLB record)Exempt
Business typeSole Owner
License issuedOctober 3, 1978
License expiresOctober 31, 2028

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Data source: CSLB public records as of November 6, 2026. License status can change at any time — verify live at CSLB before signing a contract.