A luxury penthouse in Dubai is the luxury development One Palm on Palm Jumeirah can cost around AED 75 million ($20.4 million). A penthouse at the Burj Khalifa, the world's ..The term "penthouse" often connotes exclusivity and luxury, especially in Dubai, it refers to the top floor of a high-rise or mid-rise building. The penthouse could offer the most impressive views of any apartment in the building, taller ceilings, and a layout that is different from that of any other apartment.