Exceptional Detached Mixed-Use Property with 6,000 Buildable Square Feet! Discover an outstanding investment and development opportunity along Avenue U, between East 23rd and East 24th Streets. Situated on a 4,000-square-foot lot, this detached mixed-use building offers approximately 2,950 square feet of existing office and residential space, a private driveway, additional rear parking, and 6,000 square feet of verified buildable area. The first floor, approximately 1,250 square feet, was previously a dental office. It features a reception area with patient waiting space, two examination rooms, two private doctors' offices, two walk-in storage rooms, and a bathroom. The upper two levels comprise a spacious residential duplex of approximately 1,700 square feet, featuring five bedrooms, two bathrooms, and a dedicated laundry room. Additional features include an unfinished basement housing the heating boiler, three separate electric meters serving each level, and window-unit air conditioning. The entire property will be delivered vacant, offering buyers immediate flexibility to occupy, lease, renovate, or explore redevelopment opportunities. With its generous lot size, verified development potential, private parking, and desirable Avenue U location, this property presents an exceptional opportunity for investors, developers, professionals, and end users. All proposed uses, alterations, and redevelopment plans are subject to applicable zoning regulations and required approvals.