Welcome to 90 Dean Street a 20-foot-wide, single-family townhouse that blends historic charm with meaningful modern upgrades, ideally located where Boerum Hill meets Cobble Hill. Just off Smith Street and surrounded by the best of Brooklyn, this beautiful four-story home offers a rare combination of scale, natural light, and serenity. The parlor floor features soaring 13-foot ceilings with original crown moulding details, two original marble-mantled fireplaces, and a gracious double parlor perfect for entertaining or quiet evenings by the fire. A two-story rear extension on the garden and parlor levels enhances the homes proportions and brings in abundant southern light. The extended parlor floor includes a cozy dining room with a built-in wet bar, sink, and two wine fridgesmaking it the ultimate spot for relaxed evenings or entertaining guests. On the garden level, an open kitchen with plentiful storage including a walk-in pantry and center island flows seamlessly into a casual family room and out to a beautifully landscaped, south-facing backyard that has been completely reenvisioned (more on that below!). A formal dining room with an original fireplace and a powder room round out this floor. Upstairs, four bedrooms plus a flexible fifth room (perfect as an office, nursery, or playroom) and two full baths provide spacious and versatile living. The spacious primary suite includes a private terrace overlooking the backyard. A full laundry room is located on the primary floor as well. The owners have completed a suite of high-impact upgrades inside and outside, including a new boiler, HVAC units, front door, and appliances. The backyard features a new limestone patio, Ipe fencing and raised deck, irrigation system, and all of the beds are planted in organic soil with a curated mix of apple trees, raspberry and blueberry bushes, a juniper tree, and roses creating a true urban oasis. Additional features include multi-zone central air, updated plumbing and electrical, and an updated water and sewer system in the basement. Located just off Smith and Court Streets and one block from the F/G trains at Bergen Street, 90 Dean is ideally located for all the neighborhoods conveniences.