O´Sierras Construction ServicesGeneral contractor in Dover, NJ

O´Sierras Construction Services is ranked #27 of 1,340 general contractors in Dover by CR Score, with 58 out of 100 as of October 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.

O´Sierras Construction Services is open 7 days a week. Its listed hours are Monday to Friday, 6 AM – 9 PM; Saturday, 6 AM – 5 PM; Sunday, 8 AM – 1 PM. On Saturdays it is open 6 AM to 5 PM, and on Sundays 8 AM to 1 PM. Hours come from the business listing; holiday hours may differ.

Serves Dover and 11 towns within 25 miles: Rockaway, Wharton, White Meadow Lake, Randolph, Succasunna, Mount Arlington, Morris Plains, Landing, Hopatcong, Parsippany and Morristown. 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.

O´Sierras Construction Services has a rating of 5.0 from 13 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 O´Sierras Construction Services on (973) 545-1550. The business is at 315 E McFarlan St, Dover, NJ 07801. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.