The pressure is growing on the companies that own and manage more than 100,000 leasehold flats and houses which are designed for older residents.
The companies that run them charge significant annual fees for maintenance, services, management, and repairs. And when the leaseholders sell their home there is an exit fee to pay.
The Office of Fair Trading is investigating these exit fees which it says could be unfair.
Angry residents recently held a noisy protest meeting at the Houses of Parliament.