VietAID has filed plans with the BPDA for a four-story, 36-unit apartment building at 25-33 Hamilton St. that would be aimed at people over 62 making no more than 60% of the Boston-area median income.

Nine of the apartments would be reserved for people making no more than 30% of the area median income, " many of whom will be transitioning from homelessness," the group says. All of the units will have one bedroom and will be between 608 and 638 square feet.

This would be the group's first senior-living building - which it says will be managed by Hebrew Senior Life, which has been providing apartments for seniors in the Boston area for some 100 years.

The building would have 12 parking spaces.

The roof will be topped with solar panels, and "the project will be fossil-fuel-free meeting the City of Boston’s Zero-Net Carbon New Construction guidelines."

VietAID says that it will preserve a grove of mature maple trees on the site, which currently consists of two vacant lots and a third lot with an unoccupied house.

25, 29, 33 Hamilton St. filings and calendar.