J2 Building ServicesGeneral contractor in Oakland, CA

J2 Building Services is ranked #16 of 1,134 general contractors in Oakland by CR Score, with 58 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.

J2 Building Services is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

Serves Oakland and 11 towns within 25 miles: Alameda, San Leandro, Piedmont, Moraga, Emeryville, Ashland, San Lorenzo, Orinda, Berkeley, Castro Valley and Cherryland. 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.

J2 Building Services has a rating of 5.0 from 6 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 J2 Building Services on (510) 701-0159. The business is at 5468 Holland St, Oakland, CA 94601. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.