ADU CITIES Contractor Directory

American Cleanroom Systems

Also listed as: Cer Clean Rooms Inc

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

CSLB license#979883
ClassificationsB — General Building
Office of record23221 Arroyo Vista
Rancho Santa Margarita, CA 92688
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(949) 589-5656
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Hanover Insurance Company (the)
Business typeCorporation
License issuedJanuary 2, 2013
License expiresJanuary 31, 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.