ADU CITIES Contractor Directory

Lee Sean Seung Youn

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

CSLB license#1126724
ClassificationsA — General Engineering · B — General Building
Office of record7942 Shoreham St
Eastvale, CA 92880
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(909) 273-1975
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Exempt
Business typeSole Owner
License issuedSeptember 20, 2024
License expiresSeptember 30, 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.