ADU CITIES Contractor Directory

Seigo - Sei Construction Corp

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

☎ Call (949) 886-7600Verify this license at CSLB
CSLB license#1030929
ClassificationsB — General Building
Office of recordP.o. Box 4052 Main St
Newport Beach, CA 92661
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(949) 886-7600
Contractor bond$25,000 — Business Alliance Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — State Compensation Insurance Fund
Business typeCorporation
License issuedSeptember 12, 2017
License expiresSeptember 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.