St. Elizabeth’s Hospital has sold two parcels on Washington Street in Brighton totaling nearly 12 acres to real estate developers for $21 million.

The buyer, CCF-BVSHSSF Washington 1 LLC, lists as its managers executives from Chicago-based Blue Vista, a private equity real estate firm, and Boston-based developer Cabot, Cabot & Forbes. The property contains one single-family home, according to Boston assessors’ records.

A spokeswoman for Steward Medical, owner of St. Elizabeth’s, and executives at the development companies were not immediately available for comment.

Cabot, Cabot & Forbes has been active in transit-oriented multifamily development projects in recent years including the 428-unit Atmark luxury apartment complex that opened in 2013 near the MBTA’s Alewife station in Cambridge and the 180-unit Deco apartment complex scheduled for completion in April across from the Quincy Adams station.

Blue Vista has invested in $5.7 billion worth of properties through acquisitions and joint ventures, according to its website.