A Charlestown developer last week filed detailed plans with the BPDA to replace the Notre Dame Education Center at 200 Old Colony Ave. with a new six-story building with 54 residential units - and ground-floor space for the adult-ed facility.

Patrick Mahoney's proposed building, which would replace both the current educational center and a single-family house across from the far larger Washington Village complex, would have up to 39 parking spaces in an underground garage.

Mahoney has proposed 4 three-bedroom units to go along with the 19 two-bedroom, 26 one-bedroom and 5 studio units.

The proposed building at 200-204 Old Colony Avenue will be an important addition to this neighborhood. The property is currently occupied by a one-story stucco building, connected to a two-story brick building. The ongoing South Boston Dorchester Avenue Planning Initiative has brought together stakeholders in this area with the consensus being that future development will focus on higher density residential uses and associated commercial uses. This site is well suited to this type of development in that it is proximate to public transportation options as well as the commercial and transportation nodes that occur in South Boston.

200-204 Old Colony Ave. project-notification form (37M PDF).