ADU CITIES Contractor Directory

Marathon Construction

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

CSLB license#1001700
ClassificationsB — General Building
Office of record6227 Cooper Avenue
Fontana, CA 92336
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(909) 355-5331
Contractor bond$25,000 — Merchants Bonding Company (mutual)
Workers' comp (CSLB record)Leasing Firm, Temp Agency, etc — Ace American Insurance Company
Business typeSole Owner
License issuedMarch 5, 2015
License expiresMarch 31, 2027

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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.