Denver-based The Simpson Group completed its sale of the 286-unit The Victor by Windsor in northeast Boston to locally-based diversified investment company The General Investment & Development Cos. for $187 million, or approximately $654,000 per unit.

The Victor by Windsor is a 365,000-square-foot multifamily complex with street-level retail space that delivered in 2013 along I-93 and one block south of the MBTA-North Station in Boston’s Government…