"We already accept family gifts and family loans backed with a second charge to help first-time buyers raise the necessary deposit on their home."
First-time buyers can borrow up to 100% of the purchase price, with parents or grandparents providing the additional security using the equity in their property.
Parents or grandparents must have minimum remaining equity of £130,000 and the maximum loan-to-value is based on the number of bedrooms in their house.
Products are available from 3.19% for a three-year discounted rate, with no application fee and a £850 product fee.
Tim Vigeon, head of lending at Buckinghamshire Building Society, commented: “We have always been keen to support the Bank of Mum & Dad to help their children onto the property ladder. We already accept family gifts and family loans backed with a second charge to help first-time buyers raise the necessary deposit on their home.
"The Family Assist mortgages offer a new option and demonstrate our commitment to look at innovative new ways to help first-time buyers achieve their home ownership dream.”
