ADU CITIES Contractor Directory

Frontier Plumbing

Also listed as: Holder's Mechanical Inc

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

☎ Call (661) 410-3200Verify this license at CSLB
CSLB license#1011970
ClassificationsC-36 — Plumbing
Office of record1140 Black Gold Rd
Bakersfield, CA 93308
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(661) 410-3200
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Insurance Company Of The West
Business typeCorporation
License issuedMarch 10, 2016
License expiresMarch 31, 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.