Beautiful renovated 1860s townhouse on quiet and desirable tree-lined street in the Historically Certified Spring Garden neighborhood. This home has 4 bedroom, 3.5 baths, 2 dens and sits on a 90 foot lot that fronts on Mt. Vernon St. and backs on to Clay St. Foyer entrance with 1920s tile floor leads to spacious living room with wood-burning fireplace, 10.5 foot ceilings and original curved stair. South-facing leaded glass window (2014) and foyer window (2001) created by artist Hope Yaffe to mimic 1920s address transom. Skylit powder room and kitchen renovated in 2014. Custom deluxe white shaker style kitchen features Calcutta Gold Marble countertops, subway tile backsplash, two Blanco Silgranit sinks, Verona 36" dual-fuel range with two ovens and 5 burners, Bosch dishwasher and Thermador refrigerator. Kitchen opens to spacious and bright South-facing dining and sitting area with French Marvin Terrace doors to Trex brand deck. Second floor features family room with built-in desk office, full bath and sunny South-facing bedroom with box bay window and new LG high efficiency washer/dryer in laundry closet. Second floor front has master suite with luxurious 4-piece Carrera Marble bath, many closets, wall of custom built-in millwork and high ceilings. Third floor features new (July, 2016) Oak tongue-and-groove wood floors, middle skylit additional den or office, full bath with large stall shower, front bedroom with wall of closets, and extraordinary 40-foot South/West facing addition (1999) currently used as a bedroom with walk-in closet. Full basement with utility sink, additional Washer/Dryer hookup and could easily by finished for playroom or home gym. Garage parking space conveniently accessible from 22nd or 21st Streets. 4-zone heating and air conditioning. This prime location is steps from the new Flagship Whole Foods, Philadelphia Museum of Art, Rodin Museum, The Barnes, restaurants, shops, Kelly Drive, Fairmount Park and Center City. Seller's Disclosure includes both a 2016 and 2017 home inspection report. Seller is a licensed Pennsylvania real estate agent. Showings begin Thursday, February 16th.