If you are looking to purchase a prefabricated home, there are two main options. The first is to buy an existing modular home, which has been constructed off-site in a factory and then shipped to your chosen location. The second option is to construct your own prefab home from scratch – in other words, getting it built on-site by experienced workers who have acquired all their knowledge through years of working on similar projects. Unfortunately, building a custom-made house will take longer than choosing one that is already complete. That said, if you are looking for a unique house design and want maximum control over how it looks in the end, building your own may be more appealing.