The townhouse contains nine bedrooms, seven full and two half baths, two eat-in kitchens, and a large recreation room and den. The master suite encompasses the third floor and features a separate library, plus two baths and an oversize dressing room.
Although the house was completely redone, with renovations led by the architect Stephen Wang, many original details from the turn of the last century remain. Among them: six marble fireplaces, inlaid wood flooring, intricate moldings, wrought iron and brass balustrade, and tall ionic columns that frame the drawing room.
Monthly taxes on the property are $15,910; Louise C. Beit of Sotheby’s International Realty was the listing broker.
The Greenwich Village carriage house where Ms. Swift lived is between Bleecker and West Fourth Streets. The seller, David Aldea, who runs a strategic technology consultancy, bought it for $5.3 million in 2005, then spent the next five years on extensive renovations that cost another $5 million.
Working with the architect Galia Solomonoff, Mr. Aldea transformed the 21-foot-wide brick structure, built in the early 1900s, into a modern home, with a private garage, an expansive rooftop terrace and, on the basement level, an indoor spa with a sauna, gym and saltwater pool.
The three-level house has about 5,500 square feet of interior space, including four bedrooms and five and a half baths, according to the listing with the Corcoran Group.
Ms. Swift had rented the place for $40,000 a month while she awaited the completion of renovations at her TriBeCa townhouse in 2016.