Starting on October first, The Bank of England is imposing stricter rules on landlords. They will now be required to provide information on all of their properties when obtaining a mortgage for just one property to be used as a rental. This is commonly referred to as buy-to-let. These rules will apply to any landlord with four or more rental properties, regardless of how those existing properties are titled (To the individual or to a company.) Much of the extra paperwork required will be handled by mortgage brokers.