ADU CITIES Contractor Directory

Big Smile Plumbing

Also listed as: 6 Hammers Inc

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

☎ Call (510) 470-9990Verify this license at CSLB
CSLB license#1078521
ClassificationsASB — Asbestos Certification · B — General Building · C-36 — Plumbing
Office of record440 N Barranca Ave #8441
Covina, CA 91723
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(510) 470-9990
Contractor bond$25,000 — Atlantic Specialty Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Pie Insurance Company (the)
Business typeCorporation
License issuedJuly 22, 2021
License expiresNovember 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.