A variation of a lease that increases the length of the term will take effect as a surrender and regrant, meaning that the existing lease would be surrendered, and a new lease would be regranted on the same terms save for the expiry of the term.
While this may appear to be a straightforward means to extend the lease term, a surrender and regrant could prove to be problematic. The risks can include the loss of existing security, the tenant acquiring security of tenure (statutory right to renew a lease) and potentially a trigger for registration of the new lease.
Perhaps the most undesirable consequence is that SDLT may be payable for the new lease following a surrender and regrant. Overlap Relief may be available on the SDLT provided that the regranted lease is of the same or substantially the same premises, but this would not apply if the original lease were granted or treated as granted before 1 December 2003.
The best way to extend the term of a lease without triggering a surrender and regrant is through the grant of a reversionary lease with a term commencing immediately after the expiry of the existing lease.
It must be noted that a reversionary lease is compulsorily registrable at the Land Registry (regardless of the length of its term) if the term commencement date is more than three months after the date on which the lease is granted.