Stunning, massive 5,700 square foot classic brownstone in prime Crown Heights! With over 4,000 square feet in the owner's quadplex including multiple outdoor terraces, and an additional 1,400 square foot gut-renovated designer garden unit, this is the ideal configuration for a buyer to combine and create the grandest single family in Crown Heights, or retain the current layout with the rental-income producing rental. The upper Townhouse quad-plex has 6 bedrooms, 3.5 baths, and TWO large terraces. Enter via private keypad access through your over-sized front door into a mudroom foyer complete with large closet. Passing through the entry vestibule one will be immediately impressed with your massive open concept parlor level perfect for entertaining. Sunshine pours through large bay windows, and with its rare status as a semi-detached brownstone there is additional exposure on the parlor level. This over-sized level provides ample space for multiple entertaining areas plus an additional full dining room, open concept kitchen with chef’s island and breakfast bar, and second dining space overlooking the charming garden through nearly floor-to-ceiling windows. The kitchen features stainless steel appliances including dishwasher, garbage disposal, split farmhouse sink, and gas range stove top with exhaust hood. There is a substantial kitchen pantry for additional storage. Completing the parlor level and tucked away is a powder room for further convenience. The second floor consists of the generously proportioned master suite with private terrace, walk-in closet, washer/dryer, and en suite 5-piece master bath featuring dual sink vanity, spa shower, and separate soaking tub. On this floor is also a second king-sized bedroom with closet, or can be easily used as a home office or sitting room to complete the master suite floor including bay windows overlooking the tree-lined street. Upstairs one will find two more king-sized bedrooms on opposite ends for privacy, each with great closet space. Separating the bedroom wings is a living room with even more closets and a shared updated bath. There is also a third bedroom on this floor ideal for a nursery or home office. The top floor has a second master bedroom with skylights, en-suite bath and a second private terrace. This penthouse level is also a great flex space for use as a home office suite, game room, fitness center, or additional entertaining space. An abundance of natural light floods through a skylight. The home has been extensively renovated to add new windows, repair significant structural components, and add in smart features such as central air/heat with smart system thermostat, as well as a smart new security system. Also including large Samsung washer and dryer appliances and new LED recessed lighting throughout. The garden unit has been reconfigured and fully renovated with designer finishes. This 1,400sf two bedroom unit also comes with the recently landscaped backyard. The interiors include new recessed lighting, custom light fixtures and closets throughout, five closets including one massive walk-in closet and an equally large pantry and laundry closet. All brand new kitchen and bath. New Samsung vented washer/dryer appliances. Kitchen features custom cabinetry, all new appliances including double-door refrigerator, dishwasher, water filtration system, garbage disposal, custom under-cabinet lighting, and a beautiful breakfast bar for additional dining space. The bath features marble and subway tiles, built-in niches for storage, and spa shower. Central air/heat, new oak wood floors, and two king-sized bedrooms complete this incredible level. This is the ideal rental unit (currently leased at $4,500 per month) or perfect as an in-law suite. With the A/C/S/2/3/4/5/LIRR all in close proximity, and the restaurants, bars, and boutique shops that are all within a few blocks of this massive two-family brownstone, this is an opportunity that cannot be missed!