The mutual said the pilot helped it better understand the challenges of lending in this area and the needs of foreign national customers.
The range is available to first-time buyers and homemovers.
West Brom Building Society defines foreign nationals as people who live and work in the UK but were born outside the UK and do not hold British citizenship.
The range includes a fee-free two-year fixed rate mortgage at 5.34% up to 80% loan to value (LTV), a fee-free two-year fixed rate mortgage at 5.45% up to 90% LTV and a fee-free five-year fixed rate mortgage at 5.4% up to 80% LTV.
It also includes a shared ownership product with a fee-free two-year fixed rate of 5.52% up to 95% LTV.
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Under the criteria, the building society will accept applications up to 90% LTV from customers holding Skilled Worker (Tier 2) visas, Health and Care Worker visas and those with pre-settled status, subject to a minimum three-year UK address history.
Applications from customers on spousal visas will also be considered up to 90% LTV where they have a minimum three-year UK address history and are supported by another applicant eligible to apply in their own right, such as a UK national or someone with Indefinite Leave to Remain.
Dependent visa holders may also be accepted up to 90% LTV where they have a minimum three-year UK address history and are applying alongside a customer on a Skilled Worker visa.
The mutual said the 2025 pilot highlighted several challenges relating to policy and customer eligibility. It also provided insight into the circumstances of foreign national applicants, helping the mutual refine its approach and develop appropriate lending criteria.
John Phillips, senior product manager at West Brom Building Society, said: “At the West Brom, we believe that people who’ve chosen to build their lives and careers in the UK should have a fair opportunity to buy a home. Through our pilot programme, we listened carefully to the experiences of foreign national customers and the brokers who support them, helping us better understand the challenges they can face when accessing mortgage finance.”
Last month, the mutual cut rates across its two-year fixed purchase mortgage range.