ADU CITIES Contractor Directory

Sci

Also listed as: Grabowski Bros Construction Inc

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

CSLB license#984859
ClassificationsA — General Engineering · B — General Building · C-21 — Building Moving and Demolition · C-42 — Sanitation System · C-47 — General Manufactured Housing
Office of record8780 19TH Street
Alta Loma, CA 91701
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(909) 981-2700
Contractor bond$25,000 — Ohio Casualty Insurance Company (the)
Workers' comp (CSLB record)Workers' Compensation Insurance — National Casualty Company
Business typeCorporation
License issuedJune 28, 2013
License expiresJune 30, 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.