The new site promises a better user experience but has kept features such as the Keystone lending map, which shows the areas across the country where Keystone has lent to borrowers.
CEO David Whittaker (pictured), said: “The improved navigation and functionality will better showcase all the products and save brokers time when checking criteria, generating mortgage illustrations and submitting cases.”
Keystone rebranded its buy-to-let business in April, after the lender broadened the product range on offer.
It now sells complex residential and commercial mortgages as well as development, medium and short-term finance products.
Earlier this year the lender launched the keystone application submission system, which allows brokers to submit and track classic range cases online.