“Section 13(1)(b) is intended to cover all contractual provisions for increasing rent, whether they be for fixed increases (for example by reference to the change in the retail price index, or 4 stepped increases to predetermined figures) or for increases by reference to an objective standard such as open market value. The scope of section 13(1)(b) was considered by the Court of Appeal in Contour Homes Limited v Rowen[2007] EWCA Civ 842 , in which Arden LJ held that: “The exclusion in section 13(1)(b) of the 1988 Act applies not simply to cases where the amount of the increase in rent is set by the tenancy agreement but also in cases where the tenancy agreement merely provides a machinery for increasing the rent.”
“3.2 Changes in rent 3.2.1 The landlord may increase or decrease the Rent by serving notice on the Tenant which notice shall specify the proposed increase or decrease and the date on which it shall take effect which shall be a date not earlier than one calendar month after the date of the notice. 3.2.2 SUBJECT TO the provisions of clause 3.2.3 the amount of any increase in rent shall not be such as will increase the Rent above the level of rent which a Rent assessment committee would determine for the Premises if the Rent assessment committee had jurisdiction to determine the rent in accordance with theHousing Act 1988 section 14 5 and no such increase shall take effect within the 12 months following any previous increase. 3.2.3 At any time during the Tenancy the Landlord and the Tenant may agree that the Rent shall be increased in return for improvements to the Premises carried out by the Landlord and any such agreement shall specify the amount of the increase the date from which it shall take effect and the improvements to which it relates and any such increase shall not constitute an increase for the purpose of clause 3.2.2.”
“… we [i.e. the landlord] can in accordance with sections 13 and 14Housing Act 1988 increase your rent at any time if we give you at least one month’s notice in writing of the increase. You must then pay the full amount shown in the notice unless either we and you agree to an alternative figure or you ask a rent assessment committee to set a rent for you. This rent will be the most we can charge for one year from the date specified in the notice unless you and we agree otherwise.”
“…as a simple statement of the effect of the general law under which, after the first year of the tenancy the appellant will have the right under sections 13 and 14 of the 1988 Act to increase the rent payable under the agreement. That statement has no independent contractual force. The parties clearly intended no more than that [the tenant] would have the right to refer a notice of increase given under section 13 to the appropriate tribunal as the general law entitles him to do. It follows that the appellant’s entitlement to invoke the statutory rent review procedure does not convert that procedure into a contractual rent review clause with the perverse consequence that access to the statutory procedure is prohibited.”