What’s the most expensive house in the world? Indeed, you're going to discover. In any case, meanwhile, we can disclose to you that you'll require in any event $128 million to possess a house on this rundown. In this article, we investigate a wide range of houses and homes, from Penthouses in Monaco to Palaces in England. In this way, right away, here's elite of the 10 most costly houses on the planet.