The site was formerly home to the Dartmouth Memorial Rink, which was built in 1950 and burned down on 16 May 1974. A sod-turning ceremony was held for the new Sportsplex in March 1981 by Dartmouth mayor Daniel Brownlow and Premier
John Buchanan. It was constructed by Dineen Construction and cost $7 million. The Sportsplex opened in 1982. A management agreement between the municipality and the Dartmouth Sportsplex Community Association was signed in 1998, and has been renewed every year since. The Dartmouth Sportsplex closed in early 2017 for a major renovation and expansion. A new double gymnasium and multi-purpose meeting rooms were added, while the fitness room was expanded. Most of the interior was revamped, except for the hockey arena. The project was designed by
Diamond Schmitt Architects and local firm Abbott Brown. Estimated in 2016 to cost $20 million, it ended up costing about $28 million. ==Facilities==