The specialist bank has raised the LTV from 70% to 75%, including interest roll-up and fees.
The lender offers bridging and term finance secured against buy-to-let, semi-commercial and commercial property with loan amounts from £100,000 to £2.5m.
Anna Lewis, head of production, commercial mortgages, at Hampshire Trust Bank, said: “We listened to our brokers and enhanced our short term lending product in direct response to their feedback.
“We are focused on continuing to improve the service we provide to intermediaries and are committed to working with them to support the growth of their businesses.
“In October the commercial mortgages team had its busiest month on record and it achieved this while still upholding its broker service standards, which is key for us. We expect to be announcing more enhancements and improvements in the coming months.”