ADU CITIES Contractor Directory

Jung Young Chai

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

CSLB license#1051661
ClassificationsB — General Building
Office of record1249 S Diamond Bar Bl #251
Diamond Bar, CA 91765
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(310) 990-7565
Contractor bond$25,000 — Jet Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Property And Casualty Insurance Company Of Hartford
Business typeSole Owner
License issuedMarch 25, 2019
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.