ADU CITIES Contractor Directory

Seidner Construction Co

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

CSLB license#214890
ClassificationsB — General Building
Office of record1949 Auto Centre Drive
Glendora, CA 91740
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(626) 818-9781
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Exempt
Business typeSole Owner
License issuedJanuary 28, 1963
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.