Steps from Prospect Park on one of the Slope's most elegant blocks!Four full stories of living plus three outdoor spaces, a rooftop study and a fully equipped basement make this 20-foot-wide townhouse as eminently livable as it is elegant and refined. One of a row of c.1909 townhouses built as double duplexes, this one has been redesigned - and newly refreshed - by premier design/build firm AE Greyson, resulting in a home where light is abundant, room dimensions are generous, and living is at once luxurious and relaxed.

As you tour the house, you'll find consistency in design elements and materials that lend a serenity and continuity: lacquered walls, scalloped plaster moldings, wood, and stone.

The foyer is a perfect entry and sitting area, and a powder room and large coat closet are conveniently located here. Through the foyer, the dining room can be host to dinner parties with enough space for after-dinner repose. It's illuminated through French doors that lead to a wraparound granite patio. The kitchen meets the other end of the patio through oversized sliders at the rear of the house. It is a marriage of warm and cool: French walnut and stainless steel with storage top to bottom. Top-tier appliances include Subzero fridge and cooling drawers, six-burner Gaggenau stove, Miele dishwasher and a double wall oven. A built-in banquette is ideal for breakfast or casual supper, while the two full walls of glass allow you to bask in sunlight and greenery. Inside and out, the spaces are integrated seamlessly. Up one flight are the library and living room with a full bath between. The living room overlooks leafy Third Street and features a sleek wood-burning fireplace and a large leaded-glass bay window with sidelights. The library boasts a wet bar and expansive travertine terrace, a perfect setting for evening cocktail parties or family movie night. The bath is lacquered in dark tones and features a step-in shower, completing the library -- with its handsome wenge bifold doors -- as a perfect guest suite.

The next floor is the primary suite: the bedroom gets beautiful light from a large leaded-glass bay window and has a wall of storage for clothes, media and sundries. A large dressing gallery fashioned in English brown oak with nickel hardware, includes floor-to-ceiling hanging and shoe closets with integrated hopper-type storage above. The bath is luxuriously fashioned in a variety of marble - mosaics to large book-matched slabs -- and appointed with double sink, deep soaking whirlpooltub and step-in shower.

The fourth floor has full-width twin bedrooms front and back, each with an en suite bath, built-in desk flanked by closets; laundry and linen closet are situated on the landing. The bedrooms are cast in dappled light and overlook treetops.

The top floor has a secluded sun-strewn home office with a wet bar and overlooks