A developer filed a proposal with the city of Boston this week to build a 350,000- square-foot retail and residential development on land owned by Harvard University in Allston.

The plans call for two buildings with about 325 apartments, 45,000 square feet of ground-floor space for retail use and residential amenities, and 3,600 square feet of outdoor open space. One of the buildings would be seven to nine stories, and the other would be six stories.