(1) A retail shop lease which provides an option to renew or extend the lease at current market rent is taken to include provision to the following effect-(a) The lessee is entitled to request a determination of the current market rent at any time within the period that begins 6 months before and ends 3 months before the last day on which the option may be exercised under the lease, but may not make such a request if the lessor and the lessee have already agreed as to what the actual amount of that rent is to be.(b) The lessee makes such a request by giving notice in writing of the request to the lessor.(c) If the lessee makes such a request, the amount of the current market rent is to be determined (as at the time of the request) in accordance with the provisions of section 31, and the period within which the lessee must exercise the option is varied so that the last day on which the option may be exercised is 21 days after the determination of rent is made and notified to the lessee in writing.
If the determination of rent is not notified within 21 days before the end of the term of the lease, the lessee may exercise the option within 21 days after the determination is notified in writing to the lessee (whether before or after the term of the lease), and the term of the lease is extended by the appropriate period to enable the lessee to exercise the option after the lease would otherwise expire.(d) The parties agree that the amount of rent determined under paragraph (c) is the current market rent for the purposes of the exercise of the option (even though it may be a determination of the current market rent as at some earlier time).(e) The parties to the lease are to pay the costs of the determination of current market rent in equal shares.
(2) If the term of the lease is 12 months or less, the periods of 6 months and 3 months in this section are shortened to 3 months and 30 days respectively.