The Diamondhead Building is a 100,000 Square Foot Office Building located on Sheffield Street in Mountainside, NJ. The building is located directly off NJ Route 22 and Mountain Ave on the boarder of Springfield and Mountainside. The location is absolutely amazing, easily accessible off of I-78 and the Garden State Parkway, and is a short distance from the many stores, restaurants, and businesses located on Route 22, as well as a short 5 minute drive to the famed Baltusrol Golf Club. This building has recently been renovated, producing a beautiful working environment with an entirely new elevator, HVAC system, security surveillance system. Our building lobby and common areas are impressive and inviting for tenants and their guests. The Building is ideal for professional office and medical use. Our in-house design team will provide exceptional services to create office spaces with high level finishes. Our design team specializes in reception areas, conference rooms and executive offices. The Building management is located on site to attend to any tenant concerns, and a cafe is located in the lobby for convenient breakfast and lunch options. This building houses the United States Internal Revenue Service and experiences extremely high foot traffic ensuring high exposure for your business! With nearly three acres of parking you and your clients will never have to worry about finding a spot. THIS IS AN INTERNAL LISTING. *All brokers are welcome for a full 5% Commission* This Building is located at 200 Sheffield Street, Mountainside, NJ, 07092 directly off route 22. The property is accessible from both I-78 and the Garden State Parkway, and is only a 20 minute drive from Manhattan.