No. Requity Homes is not a mortgage provider, so there is no interest rate during your rent-to-own term.
Your monthly payment is made up of rent (aligned with the home's carrying costs) and a fixed savings contribution. Neither component is interest-bearing.
When you're ready to buy the home back at the end of the program, you'll apply for a mortgage through a bank or lender at that time — at whatever rates apply then.
