ADU CITIES Contractor Directory

Ace Engineering Inc

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

☎ Call (909) 392-4600Verify this license at CSLB
CSLB license#613320
ClassificationsA — General Engineering · ASB — Asbestos Certification · B — General Building · C-21 — Building Moving and Demolition
Office of record337 North Vineyard Ave Ste 205
Ontario, CA 91764
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(909) 392-4600
Contractor bond$25,000 — Western Surety Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Employers Preferred Insurance Company
Business typeCorporation
License issuedFebruary 24, 1991
License expiresFebruary 28, 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.