Rob - and presumably Blac Chyna's - big move comes after they revealed they were expecting a baby girl.
The pair announced the gender of their first child on their new TV show Rob & Chyna, and his family were quick to share their excitement on Twitter.
The huge home features a tennis court, swimming pool, an out house and lots of land.
Some identified the property as being located in Southampton, New York - on the other side of the country to his famous family.