ADU CITIES Contractor Directory

Union Construction Company

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

CSLB license#399937
ClassificationsA — General Engineering · B — General Building · C-33 — Painting and Decorating
Office of record21217 Washington ST37
Walnut, CA 91789
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(213) 422-5004
Contractor bond$25,000 — American Contractors Indemnity Company
Workers' comp (CSLB record)Workers' Compensation Insurance — Pie Insurance Company (the)
Business typeSole Owner
License issuedFebruary 18, 1981
License expiresFebruary 28, 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.