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About Us

Keystone Property Finance is an intermediary-only, specialist buy to let lender owned by The Property Business Group. 

Originally established as Keystone Buy to Let Mortgages in 2005 by David Whittaker, then managing director of Mortgages for Business, the first funding line was provided by Bradford & Bingley. Having lent c£200m, Keystone withdrew from the market in 2008 due to the financial crisis. 

Four years later, as the buy to let lending market recovered, Keystone relaunched in April 2012 with funds provided on a three-year contract by Aldermore Bank. June 2015 the funding contract with Aldermore ended with Keystone having originated c£205m in loans. 


Keystone launched a New Classic Range with funding from peer-to-peer lender Landbay, with loans managed by leading mortgage administrator Paratus AMC. Six months’ later Paratus AMC issued a funding line directly to Keystone.

The next venture, would be as a lender in its own right, rather than a lending brand. On 10th September 2018 Keystone Property Finance launched a range of fixed buy to let mortgages. 

Keystone is particularly good at helping brokers who are struggling to find a home for complex buy to let deals. The business development managers are well known for going the extra mile and because they have direct access to the underwriting team, they can often negotiate to get seemingly unworkable cases placed successfully.

Regularly out on the road, the BDMs take the time to get to know brokers in their patch face to face, over the phone and via email. So if you’d like to get a better understanding of our products and services why not arrange a meeting?


Keystone is on the lending panels of a raft of networks and mortgage clubs.


If you would like to place a case, please make sure you register with us first. Remember, we are fast payers! As soon as we’ve been paid for a completed case, you’ll get paid and we’ll make sure that each payment is properly referenced to help keep your record keeping in order.