Legal background Lease extensions
For qualifying tenants of a long lease of a house, the Leasehold Reform Act 1967 sets out the right to the grant of a new lease for the remainder of the existing term plus a further 50 years, commonly referred to as a lease extension. No premium is payable, but the new lease can contain a modern ground rent, reviewable after 25 years.
	For qualifying tenants of flats, the Leasehold Reform, Housing and Urban Development Act 1993 sets out the right to a new lease for the remainder of the existing term plus a further 90 years, commonly referred to as a lease extension. A premium is payable, but the new lease must contain a peppercorn ground rent.