Financing a tiny house on foundation is a more familiar process for lenders and thus much more straight forward. While deposits, rates and other factors vary greatly: “Construction loans are typically short term with a maximum of one year and have variable rates that move up and down with the prime rate. The rates on this type of loan are higher than rates on permanent mortgage loans. To gain approval, the lender will need to see a construction timetable, detailed plans and a realistic budget, sometimes called the “story” behind the loan. Once approved, the borrower will be put on a bank-draft, or draw, schedule that follows the project’s construction stages and will typically be expected to make only interest payments during construction. As funds are requested, the lender will usually send someone to check on the job’s progress. Of late, lenders have been combining the two into a single 30-year loan with one closing, called construction-to-permanent financing. Because of the bank’s greater loan-to-value risks in these, I might add, be prepared to put a little more skin in the game: The lender may offer only 80 percent of project costs or even less. If you already own the land, that can serve as equity.” Bankrate.com