A. A modular home is factory constructed in a controlled environment with quality materials and components. Too many modular homes are built in pieces using approximately 30% more lumber than stick built, and are connected to a foundation and to each other. Many modular homes appreciate, appraise, and resell at the same rate as or even better than stick built homes. They can be used to build garages, duplexes, condos, townhouses, even office buildings.