ADU CITIES Contractor Directory

Stem Plumbing

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

☎ Call (818) 447-2520Verify this license at CSLB
CSLB license#1129528
ClassificationsC-36 — Plumbing
Office of record20345 Cohasset St #22
Winnetka, CA 91306
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(818) 447-2520
Contractor bond$25,000 — Merchants Bonding Company (mutual)
Workers' comp (CSLB record)Exempt
Business typeSole Owner
License issuedNovember 22, 2024
License expiresNovember 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.