Help to Buy is subject to the Homes and Communities Agency’s (HCA) terms and conditions and is available on new build homes up to £600,000 to customers where the property represents their only residence. The equity loan is interest free for the first five years. After five years, an annual fee of 1.75% of the outstanding equity loan is charged. This is increased annually by RPI plus 1%. The equity loan must be repaid after 25 years, or earlier if you sell your home.