Ideally located on prestigious Hartshorn Drive, this extraordinary 7 Bedroom Colonial has the perfect floor plan with grand 2-Story Entrance Hall, 9' high ceilings on the 1st & 2nd levels, bright living room, elegant dining room, butler's pantry with wet bar , stunning new gourmet eat-in kitchen w/ huge center island , custom cabinetry , marble countertops , Subzero , Viking and Bosch appliances , window seat , walk in pantry , open to the family room with gas fireplace flanked by wall of bookshelves, coffered ceiling & easy access to terrace from sliding glass doors perfect for al fresco dining . Has a huge inviting in-law suite with 2 walk-in closets, a sunlit office, & a beautiful full bath w/ shower, Jacuzzi & bidet . There is an additional 1st level bedroom with en suite bath. Convenient 1st level laundry room. 2nd level features a new luxurious Primary Suite (2024) with 16' high vaulted ceiling , gas fireplace , massive custom walk-in closet, spa-like bath with Victoria & Albert soaking tub, shower, & double sinks, as well as 3 more spacious en suite bedrooms. The lower level has a nanny's suite w/ kitchenette , recreation room, mudroom to 3 car garage & great natural light in huge exercise room w/ mirrored walls & French doors that open to Bluestone patio & spectacular property w/ plenty of room for a pool! Smart home features & great amenities. Close to highly rated Hartshorn Elementary School , Short Hills Train Station & Gero Park , the town's rec center !