551 4th Street 1-L Nestled on a tree-lined, landmarked park block in the heart of Park Slope, this 3BD/2BA first-level unit was gut-renovated with a full architect-designed rebuild in 2023. Proudly designed by the homeowners, thoughtfully innovative touches are found at every turn for enhanced comfort and convenience. The apartment has numerous windows across three exposures and more than 550 square feet of private outdoor space accessed from the kitchen. The expansive, light-infused living room faces south through bay windows and features an electric fireplace and built-in cabinetry. The living room flows into the dining area and custom gourmet kitchen, lined by a full wall of pantry cabinets. State-of-the-art appliances include an integrated Sub-Zero refrigerator and Bosch dishwasher along with a GE Cafe 6-burner double-oven range. The large center island with drawer storage is topped in Calacatta Monaco Quartz. A raised private deck steps down to an exclusive wraparound yard through the kitchen door. Three separate bedrooms line a gallery hallway. Overlooking the garden through two windows, the primary suite is equipped with an en-suite spa-like bathroom with a stall shower, a fitted closet, and an enclosed office nook with built-in shelving and ventilation. A full bath with a soaking tub serves the secondary bedrooms. Both bathrooms offer radiant floor heating and Toto toilets, with a Toto Washlet bidet in the primary bath. Cleverly concealed storage nooks, such as a hidden entry shoe closet and a kitchen appliance garage, keep the apartment tidy and organized. Wide-plank European White Oak flooring is everywhere underfoot, and the ceilings reach 9 5 . There is also a vented LG washer/dryer in-unit, as well as mini-split HVAC. Further upgrades include sleek covered radiators, new electrical, new plumbing, new floors and subfloors, and sound insulation in the bedroom walls and ceilings. Lutron Caseta Smart Dimmers are installed on all lighting, and Lutron Smart Serena Shades have been added to all windows (and can be controlled via Alexa, Google Home, etc.). Cat-6 ethernet ports provide connectivity in each room. Storage space is abundant throughout. The gracious pre-war building is situated just a half block to Prospect Park, less than two blocks to the conveniences of 7th Avenue, and a short distance to the F train. Pet-friendly with board approval.