Longwood Group has broken ground on an apartment tower at 105A Huntington Ave. in Boston’s Longwood Medical area after obtaining $84.3 million in financing.

Named Serenity, the 15-story, 195-unit building will contain 1,860 square feet of ground-floor retail space. Residential units will contain stainless steel appliances, oversized windows and stone countertops and feature views of Olmsted Park.

CBRE’s John Kelly, Michael Prakken and Sam Dylag procured first mortgage construction and preferred equity financing on behalf of Brookline-based Longwood Group.

“Serenity is well positioned to capitalize on Boston and the Longwood Medical area’s unmet demand for luxury apartment living,” Anthony Nader, vice president of Longwood Group, said in a statement. “We look forward to delivering a best-in-class product for our future residents and continuing to foster the live-work-play atmosphere that will drive Boston forward.”

The project will be built on a vacant 1-acre lot previously owned by the state of Massachusetts between the Jamaicaway and South Huntington Avenue. The steel-framed building will have a brick, glass and metal panel exterior. Common area amenities include a lounge, billiard room, kitchen, library, pool, computer room and fitness center.