From listing on Trulia There's nothing like America's over-the-top real estate to remind you that nearly one-third of the world's billionaires call the US home. But luxury comes in many forms — and at varying price points — across the country. Our friends at Trulia helped us compile a list of the most expensive homes currently for sale in every state, plus Washington, DC. From a $3 million private island in Alaska to a $180 million European-style estate in California, below are the most expensive homes on the market in every state.ALABAMA: $11.9 million From listing on Trulia City: Jemison Size: 7,500 sq.