The Zoning Board of Appeals this morning unanimously approved a proposed 27-unit apartment building next to the Fairmount commuter-rail station.

The Southwest Boston Community Development Corp and the Codman Square Neighborhood Development Corp. plan to spend $7 million to build 24 units for people making up to 60% of the area's median income and 3 apartments for people making between 60% and 80% of that amount. It will be built on a derelict piece of former industrial land.