After years of anticipation, preliminary plans have been filed for a major redevelopment project in Courthouse.

Apartment developer Greystar has filed a preliminary site plan application for the “Landmark Block,” consisting of the former Cosi, Boston Market and Jerry’s Subs restaurants, and the current Summers Restaurant and Mattress Warehouse.

The aging, low-slung buildings a block from the Courthouse Metro station are proposed to be replaced with a 20-story residential tower.

Greystar is proposing to contruct a 210-foot tall building with 418 residential units, about 400,000 square feet of total floor space, a rooftop deck, second floor pool and parking garage. The garage would have space for 418 bikes and 224 cars, including 60 vehicle parking spots for visitors.

The building would also have ground floor retail space, and penthouse apartments on the 20th floor. Greystar says the building would at minimum meet LEED Gold certification requirements, and the overall project would include a community benefits package with affordable housing and public art contributions, as well as “recognition of historic features and buildings,” among other things to be negotiated as part of the site plan process.

A planning process five years ago suggested that at least some of the building facades on the block would be preserved. The Envision Courthouse Square process also envisioned the Landmark Block redevelopment as being to the north of what could eventually become “Courthouse Square,” a large green park with underground parking below.

As part of fulfilling that more pedestrian-friendly vision for Courthouse, Greystar’s plans depict N. Uhle Street — located between the future building and the Metro station — as a tree-lined “promenade.”

While Greystar is listed as the applicant, affiliates of JBG Smith are listed as the owners of the underlying properties in county documents.