To build a modular home you need to pay the dealer for the modules and the general contractor for his services. If you do not own a building lot, you need to purchase it as well. There are three typical sources of these funds. The first is private funds, such as personal savings, an equity loan on another property, the sale of personal assets, or a family loan. The second is a lending institution, usually a bank, credit union, or mortgage company. The third source is the modular dealer or GC.