Duplex buildings with open-air swimming pools are residential properties that combine a two-story structure with a swimming pool situated outdoors. These types of properties are often sought after for their luxurious and spacious living experience. Appreciation of such a home typically involves analyzing the architectural design, the quality of construction, the layout of the space, the amenities provided by the outdoor pool, and the overall value of the property. Factors to consider include the location, the size of the pool, the materials used, and the views from the property.