Calculate Home Equity Payment Financing For Mobile Home And Land Home Improvement Loans Interest Rate HUD.gov / U.S. Department of Housing and Urban Development (HUD) – HUD/FHA does not set the interest rate. interest rates are negotiated between the borrower and the lender. The maximum amount for a Single family property improvement loan for the alteration, repair or improvement of an existing single family structure is $25,000 and the maximum term is 20 years.Can I get a loan for a mobile home? – USA TODAY – Can I get a loan for a mobile home?. there are financing options available for mobile homes.. a unit in a mobile home park where one entity owns land and all of the people who reside in the.