Imperial IslandsGeneral contractor in Ontario, CA

Imperial Islands is ranked #27 of 923 general contractors in Ontario by CR Score, with 56 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Imperial Islands is open 7 days a week. Its listed hours are Monday to Sunday, 8 AM – 6 PM. On Saturdays it is open 8 AM to 6 PM, and on Sundays 8 AM to 6 PM. Hours come from the business listing; holiday hours may differ.

Serves Ontario and 11 towns within 25 miles: Montclair, Upland, Chino, Claremont, Pomona, Rancho Cucamonga, Los Serranos, La Verne, Chino Hills, Eastvale and Diamond Bar. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

Imperial Islands has a rating of 4.6 from 9 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Imperial Islands on (909) 675-2125. The business is at 711 W Nevada St BLDG 1, Ontario, CA 91762. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.