It has cut rates across buy-to-let and 90% LTV residential products ranges.
The average void period is now 24 days while the average cost of rent is £898.
Across its fixed rate buy-to-let range the bank has cut rates by 0.2%.
And only a small number of customers check the accommodation has insurance before booking a stay.
This is within the past 12 months.
Levy said that the situation at the moment is accidentally creating mortgage prisoners.
Some 90% of the top areas with the highest annual rent as a proportion of house prices are in Scotland.
The lender said exiting retail investors have had their funds returned in full to their Landbay account.
Foundation’s buy-to-let range includes products for portfolio and limited company applicants.
Members of club will be able to place applications directly with Principality Building Society after registering to Principality’s intermediary network.