ADU CITIES Contractor Directory

509 Builders Inc

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

CSLB license#1155689
ClassificationsB — General Building
Office of record2630 Pico Blvd
Santa Monica, CA 90405
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(310) 702-5075
Contractor bond$25,000 — Arch Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — State Compensation Insurance Fund
Business typeCorporation
License issuedMay 26, 2026
License expiresMay 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.