ADU CITIES Contractor Directory

United One Engineering

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

CSLB license#1077505
ClassificationsA — General Engineering · B — General Building · C-10 — Electrical
Office of record9500 7TH Street Ste U
Rancho Cucamonga, CA 91730
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(909) 229-9475
Contractor bond$25,000 — Western Surety Company
Workers' comp (CSLB record)Exempt
Business typeCorporation
License issuedJune 28, 2021
License expiresJune 30, 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.