Image courtesy of Davis Square Architects

A Mattapan nonprofit unveiled a proposal for 51 apartments on a cluster of parcels that have sat vacant for more than two decades off Blue Hill Avenue.

Caribbean Integration Community Development plans to finance the estimated $30-million 329 Blue Hill Ave. project with federal and state low-income tax credits and financing from the city of Boston and Massachusetts Executive Office of Housing and Livable Communities, according to a small project application submitted to the Boston Planning Department.

Bank of America has submitted a letter of interest to provide an $18.8 million construction loan, while Massachusetts Housing Partnership has indicated interest in providing a permanent loan, according to application materials.

Developers anticipate beginning the 18-month construction project in early 2028.

Designed by Davis Square Architects, the project consists of a single 5-story, 48,340 square-foot building with “flat-style” units reserved for households 62 and older.

Units will be restricted to households earning 30 to 60 percent of area median income, and 30 percent of units would be reserved for formerly homeless individuals.

Groundwater and soil testing by GZA GeoEnvironmental showed that contamination related to the past use of the property as a dry cleaners did not exceed allowable levels.

After community meetings, the developers agreed to include 10 parking spaces, although none are required under zoning, CICD President Donald Alexis wrote in the submission letter.

Members of the project team include development consultant Bevco Associates, RBLA Design, legal counsel Derric Small, Eisenberg Consulting and Devellis Zrein Civil Engineering.

The Boston Planning Department has scheduled a virtual public meeting for Oct. 15.