ADU CITIES Contractor Directory

Environmental One

Also listed as: Oak Tree Enterprises Inc

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

☎ Call (818) 334-5414Verify this license at CSLB
CSLB license#1034456
ClassificationsA — General Engineering · HAZ — Hazardous Substance Removal
Office of record1739 1/2 Del Valle Avenue
Glendale, CA 91208
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(818) 334-5414
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Workers' Compensation Insurance — State Compensation Insurance Fund
Business typeCorporation
License issuedDecember 28, 2017
License expiresDecember 31, 2027

Is this your business? Claim this listing to enhance it with your website, photos, and project details.

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.