ADU CITIES Contractor Directory

Mastrian Constuction

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

CSLB license#540069
ClassificationsB — General Building
Office of record4141 W 170 Street
Lawndale, CA 90266
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(310) 567-2666
Contractor bond$25,000 — Atlantic Specialty Insurance Company
Workers' comp (CSLB record)Exempt
Business typeSole Owner
License issuedAugust 30, 1988
License expiresAugust 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.