Welcome to 311 Warren Street, an award-winning, architecturally distinguished mixed-use gem located on a premier corner lot at Warren and Smith Streets in the heart of Cobble Hill, Brooklyn. This 25-foot-wide, fivestory+ building—honored with the Brooklyn Chamber of Commerce’s Best Mixed-Use Building Award—seamlessly blends refined residential living with high-visibility commercial presence. Built in 2010 and benefiting from favorable Tax Class 1 designation, the property features a private, light-filled five-bedroom residential triplex with entrances on Warren Street. Designed with windows on all four sides, the home spans three expansive levels and includes a private elevator, two terraces, and a finished roof deck offering sweeping views of Brooklyn and Manhattan. A flexible third-floor suite, complete with full kitchen, bathroom, washer/dryer, and home office, is perfectly suited for guest accommodations, an au pair, or potential rental income. Additional features include a Thyssen Krupp elevator, indoor garage with car lift capability, three full bathrooms, and a chef’s kitchen with premium Thermador appliances. Built to passive house standards, this home incorporates radiant floor heating, mini-split AC/heat units, installed solar thermal water heating, soy-based insulation, a whole house water filtration system, and an air filtration system with passive fresh air ventilation ducts. It also features custom noise-dampening high efficiency thermal windows and doors. The two-story commercial unit—accessible via a gated Smith Street entrance—offers a versatile layout suitable for one or two tenants, complete with two half bathrooms and a 25-year tax abatement (2025 taxes just $32,000). Located directly across from the F/G subway entrance and MTA bus stop, this property enjoys unmatched foot traffic and visibility—ideal for premium retail or boutique office use. With 835 square feet of additional FAR approved by the NYC Department of Buildings, 311 Warren represents a rare opportunity to own a sustainable, income-producing asset with future development potential in one of Brooklyn’s most sought-after neighborhoods.