TSB will no longer lend on buy-to-let properties in England and Wales that do not meet minimum energy efficiency standards.
Buy-to-let landlords are currently prohibited from renting out all private rented properties (including existing tenancies) that do not meet the minimum E rating.
The lender has also made criteria changes when it comes to fire safety certificates for potentially at-risk flats.
Previously TSB required a full fire safety report and a letter from the expert who carried out the inspection in order to lend against properties with external walls and balconies made from potentially combustible materials.
But the company will now accept an External Wall Fire Review report or EWS1 form confirming that no remedial work is necessary.