Prime Manhattan development opportunity at 541 W 159th St, New York, NY 10032—currently configured as a 4-bedroom, 5-bath duplex with a full walkout basement/cellar and three floors up, with all major structural and mechanical work already completed including framing, plumbing, electrical, and roofing. The property comes with approved architectural plans and unused air rights, giving an incoming investor the flexibility to either complete the project as a luxury residence or convert it into a high-yield 8-unit condominium development. Located in a high-demand Washington Heights corridor near transportation, hospitals, universities, and major amenities, this is an ideal investment for builders or developers seeking a low-risk, high-upside opportunity where major initial stages are already finished, minimizing delay and maximizing profit potential.