The lender offers between £50,000 and £1m to 80% loan-to-value against valuable assets, as it also lends against jewellery, fine wine, classic cards and yachts.
With 73% of its lending involving property, HNW said older borrowers are finding it harder to secure mortgages due to age restrictions and a one-sized-fits-all approach to complex incomes.
Ben Shaw, founder and director of HNW Lending said: “In the first five months of this year we have seen a 38% increase in enquiries from people looking to use their property to secure funds.
“Overall, around 85% are looking to use UK based properties, and 15% want to borrow against overseas homes, generally in Spain and France.”