ADU CITIES Contractor Directory

Mas Developer Company

Also listed as: 6101 Wilmington Avenue L.p

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

CSLB license#1128545
ClassificationsB — General Building
Office of record1850 E 61ST Street
Los Angeles, CA 90001
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(323) 973-9100
Contractor bond$25,000 — Merchants Bonding Company (mutual)
Workers' comp (CSLB record)Exempt
Business typePartnership
License issuedOctober 31, 2024
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.