ADU CITIES Contractor Directory

Tenthien Construction

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

CSLB license#1128998
ClassificationsB — General Building
Office of record11250 Greycliff Ave
Montclair, CA 91763
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(909) 538-7434
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Exempt
Business typeSole Owner
License issuedNovember 12, 2024
License expiresNovember 30, 2026

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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.