A duplex can be the solution for a growing family wanting to live together or a lucrative property development project.
Some people have considered building a duplex on their current property to provide accomodation for their recently married children. Some people consider a duplex to build two properties, sell one and pay down the loan on the one they keep, or others for the pure reason to make money by selling both.
Whatever your motivation, consider the below when deciding if this is for you