JPMorgan Chase chief Jamie Dimon won the right Tuesday to deposit a house in his Sarles Street home.

With final blessings from the planning board, Dimon can proceed with plans to convert a four-car garage in the 9,600 square-foot main residence into a two-bedroom, two-bath cottage with its own kitchenette.

The 1,069-square-foot cottage will be carved from an existing 1,617-square-foot garage. The leftover space will house a 229-square-foot security-console room, with pantry and bath, and 319 square feet of space for mechanical and electrical equipment.

Dimon’s property, largely a family summer retreat, includes a tennis court and a pool, with a cabana currently under construction for a future pool. Another accessory cottage also sits on the more than 29 acres off Sarles Street.

The new cottage will be topped by a slate gambrel roof, the banker’s land-use lawyer, John Marwell of Mount Kisco, said.

Accompanied by other members of the development team, including architect Gary Savitzky of Scarsdale, Marwell addressed the planning board Tuesday, saying, “We are in front of you this evening for site-plan approval and special-use-permit approval.” Marwell won three needed variances—exceptions from the strict letter of the town’s land-use code—from the zoning board of appeals last month.