Alibaba.com offers 2 duplex house products. About 50% of these are prefab houses. A wide variety of duplex house options are available to you, such as hotel, house, and shop. There are 2 duplex house suppliers, mainly located in Africa. The top supplying country is Nigeria, which supply 100% of duplex house respectively. Duplex house products are most popular in Eastern Europe, South America, and North America.