The Boston Housing Authority has designated Amory Partners, a joint venture of the Jamaica Plain Neighborhood Development Corp., Urban Edge and The Community Builders, to redevelop 125 Amory St., a 215-unit public housing for elderly and disabled near Jackson Square. In a press release, the Housing Authority said, "Some of the key features and determining factors of the selection include preservation of existing public housing units and generation of up to $3 million in cross subsidy from new mixed income units. The second component is the new connection to the surrounding neighborhood to create a more integrated development. The final design will include a total of 509 units of which 185 will be market rate and 324 workforce/affordable." Amory Partners will add 214 new apartments in satellite buildings on the vacant land of the site around the main building of Amory Apartments.