The mutual is initially offering tailored products to a number of directly authorised mortgage brokers.
Products available include its lending into retirement option, which has no upper age limit and allows borrowers to use the sale of property as a repayment strategy for an interest-only mortgage.
It also has plans for other new propositions including shared ownership mortgages.
Business development manager Ashley Pearson will be the key point of contact for brokers.
Pearson noted that the lender takes an individual approach to underwriting and has a “desire to make a difference, particularly to those borrowers who might have slightly complex circumstances that can sometimes make it difficult to get everything they need from larger lenders”.
Loughborough Building Society chief executive Gary Brebner added: “We want to offer our services to a wider audience and recognise the important role mortgage intermediaries play in today’s markets.
“We’re looking forward to developing our proposition over the coming months.”