The Cumberland Building Society was established on 16 April 1850 as the Cumberland Co-operative Land and Benefit Building Society. It has its headquarters in Carlisle, Cumbria, England. It is the 10th largest in the United Kingdom based on total assets of £2.5 billion as at 31 March 2018. The first branch was opened 100 miles south of Cumberland in Preston, Lancashire. It is a member of the Building Societies Association. The society owns several subsidiary companies, including Cumberland Estate Agents Ltd, and Borderway Finance.