On Friday Keystone confirmed its funding contract with Paratus AMC, which resulted in the origination of nearly £200m in loans, had come to an end after three years.
The lender did not disclose who the partner is or how much it had available to lend, but confirmed it will continue to serve landlords with more complex borrowing requirements.
This will include those borrowing personally and through a variety of corporate structures including individuals, SPVs, LLPs and trading limited companies.
As part of the changes it has become a fully in-house lender and appointed Elise Coole as operations director along with an enlarged team of business development managers, underwriters and case managers.
Products in the overhauled range will start at 2.99% and include higher-yielding properties such as houses in multiple occupation and multi-units.
Keystone Property Finance CEO David Whittaker said: “The step up to full lender status corroborates our performance so far.
“Over the last six years we have successfully originated more than £400m of loans via intermediaries, networks and mortgage clubs and we have made a name for ourselves as true specialists willing to go the extra mile.”
It will also launch a new technology portal for brokers called MyKeystone which is integrated with the Buy to Let Hub.
“As the buy to let market realigns to the new tax and regulatory landscape, it is important that as a lender Keystone provides products and systems to enable brokers to support their landlords through this period of change,” Whittaker said.