Perfectly situated on one of Park Slopes most sought-after tree-lined blocks, this 21 ft-wide, four-story brownstone epitomizes architectural elegancenow thoughtfully reimagined with a comprehensive, top-to-bottom renovation that blends historic grandeur with modern infrastructure. Graced by a stately front stoop and intricate period details, this timeless residence features a distinguished owner's triplex presiding over a beautifully transformed garden level, offering flexibility for rental income or expansive single-family living. Behind its classic faade lies an extraordinary level of investment and care. The home has undergone a complete systems overhaul, including all new electrical, plumbing, and gas lines extended to the street, ensuring modern efficiency and peace of mind with no lead or outdated infrastructure. A top-of-the-line Mitsubishi Comfort HVAC system provides zoned heating and cooling throughout, while new windows, new water heaters, and fully remediated materialsincluding lead-free paint and asbestos removalunderscore the meticulous nature of the renovation. Aptly described as grand, the parlor level unfolds with a 32-foot-long living room bathed in southern light through curved bay windows overlooking leafy Fiske Place. Original herringbone hardwood floors, soaring ceilings, restored ceiling murals, and exquisite millwork create a setting that feels both elevated and deeply rooted in history. Decorative mantles with pier mirrors, stained glass accents, and preserved textures speak to the homes provenance, while thoughtful updateslike custom HVAC covers and seamlessly integrated lightingenhance daily living. The reimagined parlor-level kitchen, now positioned where the formal dining room once stood, is both striking and functional. Calacatta marble countertops and backsplash pair with a suite of high-performance appliances, including Miele, Caf, and Sub-Zero-style refrigeration elements, alongside refrigerator drawers and a wine fridge. A separate butlers kitchen adds an additional layer of sophistication, ideal for entertaining, while a newly added powder room features a sculptural concrete sink and custom finishes. Upstairs, the private quarters continue to impress. The primary suite level has been transformed to include a spa-caliber bathroom complete with an infrared sauna, soaking tub, curated tilework, and custom vanity, alongside an expanded walk-in closet and integrated laundry room. Restored fireplaces, custom closets, and refined design details carry throughout, while the top floor offers additional bedrooms, a beautifully finished bath, and thoughtfully designed storage. The garden level has been completely opened and reconfigured to create a seamless, light-filled living space. A second kitchen with premium appliances, beautifully tailored cabinetry, and designer finishes flows into a flexible den, guest space, and playroom, all anchored by exposed beams and elevated materials. A newly constructed bathroom, mudroom enhancements, and preserved original elementsincluding the historic ice boxadd both charm and practicality. Below, the cellar has been fully excavated and transformed into a dynamic extension of the home, featuring increased ceiling heights, a waterproofed foundation with integrated drainage, and distinct areas for recreation, fitness, and storage. Rich character detailsincluding reclaimed materials and exposed beamsmake this level as compelling as it is functional. Outdoors, both the front and rear of the home have been completely reimagined. The landscaped backyard features a custom steel and teak deck, bluestone and brickwork, integrated drainage systems, new fencing, and curated lighting, creating a private oasis designed for both beauty and durability. The front garden has been refreshed with new bluestone, smart lighting, and even a newly planted Granny Smith apple tree, adding a charming, personal touch. At the finest address, moments from Prospect Park and within