The mortgage is available for up to 70% loan to value at 3.29% for loans up to £300,000.
Mike Taylor, sales and marketing manager, said: “The Mansfield maintains the traditional strengths of the building society movement, with its roots in the local community, but is passionate about understanding the wider marketplace and providing the kind of products to match the needs of particular sectors.
“We have been a consistent supporter of the BTL market in the UK and in 2014 we expect to see it continue growing and our new product demonstrates a clear intention to offer competitive options to support brokers and landlords.”
The product charges a £199 application fee and a completion fee of £999.