ADU CITIES Contractor Directory

Cornerstone Insulation

Also listed as: Bridgestone Construction Inc

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

☎ Call (310) 738-6029Verify this license at CSLB
CSLB license#1074882
ClassificationsB — General Building
Office of record9350 Sierra Mar Dr
Los Angeles, CA 90069
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(310) 738-6029
Contractor bond$25,000 — Merchants Bonding Company (mutual)
Workers' comp (CSLB record)Exempt
Business typeCorporation
License issuedApril 16, 2021
License expiresApril 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.