After evaluating six potential sites, Conservatory Lab Charter School has bought a Dorchester property that will enable it to build a new 45,000-square-foot campus.

The school acquired 395 Columbia Road for $5 million from Packard Family Realty LLC. The 1.3-acre site was the longtime home to Chapman Waterproofing, which recently relocated to Westwood.

Colliers Boston’s Vice Chair James Elcock represented owner, Packard Family Realty LLC, in the sale. Colliers Senior Vice President Bob Cronin advised the buyer, Conservatory Lab Charter School, through an exclusive site search assignment to identify expansion options within the city of Boston. Cronin previously represented the school in its previous relocation from St. Columbkille’s Parish in Brighton to the former Labouré College of Nursing space at the Carney Hospital campus in Dorchester.

“The sale was a win-win for each of our Colliers clients,” Elcock said in a statement. “Schools tend to have a revitalizing effect on neighborhoods so it will be exciting to watch CLCS breathe new life into 395 Columbia Road and the surrounding community in the weeks, months and years to come.”