EVERYTHING ABOUT THESE New York–style brownstones rings authentic, what with their ruddy masonry, bay windows, cornice detailing, wrought iron rails, muscular walk-up stoops, and bronze gutters and downspouts. Except that they're not on the island of Manhattan or its environs.

Builder/developer EYA imagined (correctly) that the four-story housing type would prove a savvy import in ritzy Potomac, Md., catering to upper-income empty-nesters who, although they were downsizing from bigger digs, still craved grand living spaces—minus the yard maintenance. At 4,226 square feet, the amply appointed Berkeley plan features four bedrooms, two full baths, two powder rooms, private elevator, library, gourmet kitchen, and rooftop terrace, plus options for an outdoor kitchen, double-sided indoor/outdoor fireplace, and steam shower. Buyers can choose between a main level or upper-level master suite. And, in true New York style, the neighborhood is within walking distance of restaurants, grocers, and local shops.

Category: Townhouse, 2,000 square feet or more; Entrant/Builder/Developer: EYA, Bethesda, Md.; Architect/Land planner: Lessard Group, Vienna, Va.; Landscape architect: Studio 39, Alexandria, Va.; Interior designer: Carlyn and Co., Great Falls, Va.

Learn more about markets featured in this article: New York, NY.