Welcome to 4428 Albemarle Street NW, a residence that distinguishes itself not just by its grand 8,300 square foot scale but by the uncompromising specification of its materials and the precision of its build. Set on a serene tree-lined block in the heart of American University Park, this estate represents a collaboration of elite contractors and suppliers that results in a home where artisanal details meet modern durability. Walking down the block you will notice the home’s commanding presence immediately as it is anchored by expert masonry and exterior brickwork executed by Guardado Construction. The walkway and welcoming front porch feature saw-cut Select Grade Pennsylvania Bluestone from the quarries of Central Pennsylvania. Once inside, the precise structural framing by Perez and Serrano Construction provides the canvas for space designed for living. Light pours into all four levels through custom Andersen windows and transoms, including floor-ceiling picture windows, indoor-outdoor fireplace, and full glass patio doors. Custom-fabricated 4-level floating stairs have been finished-in-place with steel and white oak in harmony with the home's design language. The heart of the home is defined by rare and curated surfaces. The chef’s kitchen with a dedicated coffee station and dual-islands features a showstopping installation of Tunisian Saharan Noir Marble, which is a unique piece sourced specifically for this estate by Marble Systems. This dramatic stonework complements a suite of premium appliances (GE Monogram, AGA, Jenn-Air, XO) supplied by M&M, which convey with fully reset warranties to ensure peace of mind for you as the new owner. The main living areas are grounded by natural-finish White Oak hardwood planking that is as durable as it is timeless. The Primary Suite features a fireplace, custom-crafted closets, and walks out to a balcony that spans the entire 60' of the rear wall overlooking the backyard oasis with an outdoor kitchen patio, firepit platform, and enough space for large gatherings. The bathrooms set a new standard for maintenance-free luxury. Floor-wall seamless Calcutta porcelain slabs on the bathroom and shower walls eliminate grout lines and prevent staining or mold. The plumbing fixtures are a collection of Kohler designs supplied by Grof USA and feature striking matte black Elate accents. The upper levels offer generous bedrooms and a massive top-floor loft perfect for a teen retreat, Au Pair Suite or home office, with balconies overlooking the front and rear yards. Citidoors-supplied high-quality doors ensure security while enhancing quiet luxury. Behind the walls, the home features 3 climate control zones powered by Carrier equipment, 80-gallon stainless steel water heating system, whole house filtration system, intelligent lighting and electronic systems, CAT-6 wiring, and home-theater-ready wiring. Life at 4428 Albemarle offers the perfect balance of urban vibrancy and residential tranquility, where you are perfectly positioned for a walkable lifestyle. A short stroll takes you to Massachusetts Avenue where you can enjoy local favorites like Millie's for dinner or pick up premium goods at Wagshal's Market. You also have easy access to the shops and dining of Tenleytown and Friendship Heights including Whole Foods and neighborhood cafés. With premier schools like Janney Elementary nearby, along with Turtle Park and the Tenleytown Metro on the Red Line this location is unrivaled for convenience and community.