Single wide homes are narrower, while double wides are wider and shorter, which looks more like a site-built home. Single wide mobile homes are typically 14’-18’ wide and 52’-80’ long. These can also range from 700 square feet to 1200 square feet. Because many rooms can be packed into a single-wide unit, the building, delivery, and installation costs can be significantly less than a double-wide. You will pay 10-25% less per square foot in a single-wide. A double-wide mobile homes range in size from 28'-36' wide and 52'-80' long. The house is transported in two sections and installed at the home site into one seamless unit. This option gives the residents more space to add extra bedrooms and choose from several configurations to make the home more comfortable living space.