ADU CITIES Contractor Directory

Csi Construction

Also listed as: Castillo / Stolnack Inc

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

☎ Call (714) 827-8400Verify this license at CSLB
CSLB license#747841
ClassificationsB — General Building
Office of record3303 Harbor Blvdsuite B-5
Costa Mesa, CA 92626
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(714) 827-8400
Contractor bond$25,000 — Business Alliance Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Valley Forge Insurance Company
Business typeCorporation
License issuedApril 7, 1998
License expiresApril 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.