Examples include extensions, garages or other outbuildings converted or already used for commercial purposes, annexes let as holiday homes, small office-based enterprises or established small shops, post offices, workshops or cafés attached to living accommodation.

Rates begin at 3.49% and the society is offering a maximum 75% loan-to-value (LTV) for capital and interest repayment products or 65% LTV for interest-only offerings.

There is a 1% fee of the loan amount and the property must have at least 40% residential usage and be fully owner-occupied.

Graham Carter, head of lending at Beverley Building Society, said: “We have in the past assisted many people with semi-commercial mortgages but have recently seen more and more people working from home and looking to relocate their established businesses there.

“Drivers for this trend seem to be achieving a better work/life balance and, at the same time, saving on the considerable costs associated with renting commercial premises.

“Our mixed-use mortgages are very much aimed at homeowners where their residential properties have an element of commercial usage.”