A partnership between developer Traggorth Cos. and Southwest Boston Community Development Corporation is bringing affordable housing to a transit-oriented site in Hyde Park.

The $12 million, 4-story Residences at Fairmount Station includes a combination of studio, one-bedroom, two-bedroom and three-bedroom units. The 24 affordable units are restricted to households earning at or below 60 percent of area median income, or $51,000 for a two-income household. Another three units are reserved for households earning 70 percent or lower of AMI.

The development at 15 Nott St. also offers 6,000 square feet of green space and play space, a public community room, and parking spaces and bike spaces.

The project is LEED Silver certified and includes handicap accessible ramps, benches, lighting, bike racks and a playground. The building was designed by DMS Design, constructed by Delphi Construction, and will be managed by Maloney Properties. Southwest Boston CDC will provide ongoing services to residents.

The city of Boston contributed $1.7 million and the Massachusetts Department of Housing and Community Development invested $2.5 million. The project received $1.5 million in federal low-income housing tax credits that raised $4.7 million in equity from National Equity Fund. Webster Bank provided the construction loan and MassDevelopment granted permanent financing.

The Community Economic Development Assistance Corporation and the Equitable Transit-Oriented Development Accelerator Fund at LISC Boston provided predevelopment and acquisition funding.