The estate, which originally included a 3-1/2 story Queen Anne/Stick style residence, gate house, and other buildings, was designed by John M. Merrick and was built in 1883. Dunmere was commissioned by Robert G. Dun (of Dun and Bradstreet fame) and served as his summer home until his death. It consisted of 13 acres (5.3 ha) with 500 feet (150 m) of ocean frontage. Major buildings included the main home, located close to the ocean, The Gardener's Cottage, located atop the hill, over-looking the property, the stable and the impressive stone archyway, traversing Dunmere's entrance gates. In addition to a mosaic swimming pool and vast gardens, Dunmere featured a pond on the waterfront, man-made from an unsightly swamp at the same location. Following a massive and all-engulfing fire of the main house, the property has since been split into three residential properties. Only the Gardener's Cottage and entrance gates remain standing today.