East Watertown’s growing life science pipeline is expanding to Coolidge Avenue corridor with a $32.6 million acquisition of the Mount Auburn Club property by a pair of leading developers.

National Development and Alexandria Real Estate Equities closed on the purchase of the fitness and tennis club at 57 and 105 Coolidge Ave. on Friday.

The firms said they’ll begin community outreach to Watertown residents in the coming weeks as they draw up plans for the office-lab development in one of the region’s emerging biotech clusters.

The club had closed as a result of the COVID-19 pandemic and the family trust that’s owned the property for 46 years agreed to sell to the joint venture, the firms announced Monday.

Alexandria and National Development previously have partnered on projects in Boston’s Longwood Medical Center area and a proposed development at 15 Necco St. in the Seaport District.

Pasadena, Calif.-based Alexandria owns nearly 8 million square feet of commercial properties in Massachusetts, including its $525-million acquisition of the athenahealth headquarters in Watertown.