ADU CITIES Contractor Directory

Supreme Mechanical Contractors Inc

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

CSLB license#1163047
ClassificationsC-36 — Plumbing
Office of record5 Carmesi
Rancho Santa Margarita, CA 92688
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(714) 553-6998
Contractor bond$25,000 — Allegheny Casualty Company
Workers' comp (CSLB record)Exempt
Business typeCorporation
License issuedOctober 15, 2026
License expiresOctober 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.