Another Boston parking garage gets topped with housing

A New York-based developer is planning to put nine floors of housing on top of a prominent downtown garage.

Fortis Property Group filed initial plans Monday with the Boston Planning & Development Agency to build 195 residential units atop the Dock Square Garage on Clinton Street along the Rose Fitzgerald Kennedy Greenway near Quincy Market.

In September, an arm of Fortis paid $170 million to buy the 698-space garage, which also houses the Hard Rock Café, with plans to develop it. Those plans include re-cladding the building, shrinking the garage to 538 spaces, and constructing a nine-level addition that would “spiral upward’’ in height to about 194 feet. More details, and images, are likely in the coming months.