Buckinghamshire Building Society launches enhanced residential affordability calculator for brokers

27 August 2026

Buckinghamshire Building Society has launched a new residential affordability calculator for mortgage brokers, designed to provide a more accurate indication of lending potential while reflecting the Society's specialist approach to underwriting.

Developed in partnership with web development agency Melon, the new calculator has been created following extensive collaboration between the Society's Mortgage, Risk and Compliance teams to ensure it closely reflects Buckinghamshire Building Society's lending policy and affordability assessment.

Unlike many standard affordability tools, the calculator has been designed to consider a broad range of lending scenarios and incorporates live product data, helping brokers explore options across the Society's specialist mortgage range with greater confidence.

The launch builds on Buckinghamshire Building Society's successful partnership with Melon, who previously worked with the Society to redesign its suite of Buy to Let affordability calculators, including specialist calculators for Limited Company and Expat lending.

Claire Askham, Head of Mortgage Sales at Buckinghamshire Building Society, said:

"We know brokers value speed and certainty when assessing their clients' borrowing options, so it was important that this calculator reflected how we lend in the real world, rather than providing a generic estimate.

"By combining our lending expertise with live product information, we've created a tool that delivers a much more accurate indication of affordability across a wider range of our specialist mortgage products, including Later Life and First Time Buyer solutions. We hope it gives brokers greater confidence when placing cases with us and makes it even easier to identify the right solution for their clients."

Steve Durrington, Founder of Melon, added:

"We've enjoyed working closely with Buckinghamshire Building Society once again to deliver another innovative solution for the intermediary market. Building on the success of the Buy to Let calculators we developed together, this latest project demonstrates what's possible when technology is combined with specialist lending expertise. The result is a sophisticated yet intuitive affordability calculator that reflects the Society's unique lending approach while providing brokers with a fast and reliable experience.”

The residential affordability calculator is available now and forms part of Buckinghamshire Building Society's ongoing investment in digital tools designed to improve the broker experience while maintaining the Society's commitment to individually assessed lending decisions.

For more information speak to your key account manager, or visit: https://www.bucksbs.co.uk/intermediaries