103 Fourth Avenue is a 62,000 square foot, one and two story steel and concrete block office/ R&D building built in 1961. The property is situated on a 6.08 acre site on Fourth Ave in the Prospect Hill Office Park in the town of Waltham, Massachusetts. It is located less than ½ mile from Route 128 and ideally positioned at the highest point in the Park. The Park is approximately 1.6 million square foot office/R&D/manufacturing park situated at the intersection of Route 128, Totten Pond Road and Winter Street.