Conveyancers are calling on lenders to standardise their mortgage terms on leasehold properties.

The Society of Licensed Conveyancers says that in recent years some lenders have changed their policies, requiring leaseholds to have 80 or 90 years to run before they will grant mortgages.

The SLC says this is causing major issues, with leaseholders only finding out when selling that they must extend the lease to make the property saleable.

The SLC says this is causing fall-throughs and delays.

SLC board member John Clay said: “It used to be the case that lenders would require an unexpired lease term of 50 or 55 years for leasehold properties to qualify for a mortgage, which normally represented the term of the mortgage plus 25 years.

“This meant that leasehold owners knew where they stood and also that property valuations were stable for leasehold homes.

“It is now the case that many properties coming to market have unexpired lease terms between 55 and 80 years which will affect their value and potential saleability.

“There appears to be no coherent reason for the change in lenders’ policies and indeed many lenders still apply the traditional model of the term of the mortgage plus 25 years.

“However, the changes by some lenders have resulted in the down valuation of many properties by RICS valuers, and in some cases it is causing blight.’

The SLC believes there are over 1m properties with unexpired leases of less than 80 years.