Rent review clauses: questions to ask

A rent review clause determines how future rent is calculated and how disagreement is resolved. The headline review frequency does not explain the valuation assumptions or whether rent can fall. ^[1]

Translate the mechanism into inputs

Identify whether the review uses market rent, an index, turnover or another formula. Read any floor, cap, hypothetical lease assumptions and exclusions. Explain improvements the tenant has funded and any unusual restriction affecting the premises' value.

For a new or renewal lease, ask about statutory restrictions on upward-only reviews, including commencement and transitional provisions. Do not assume an older precedent remains suitable. ^[2]

Ask a surveyor what comparable evidence is relevant. A neighbouring unit's advertised rent may differ from its agreed rent, incentives, size or repairing burden.

Track the procedural steps

Check notice requirements, negotiation stages and the mechanism for appointing an expert or arbitrator. Establish how rent is paid while the review remains unresolved and whether balancing sums or interest may follow.

Heads of terms should record the negotiated review basis. Lease renewal involves a different exercise and should not be confused with an existing contractual review. Keep the agreed result in the required form and update the rent ledger only from the correct effective date.

Identify what the clause is trying to measure Read the definition of the reviewed rent with the rest of the mechanism. A market review may ask a valuer to consider a hypothetical letting on specified terms, while an indexed review uses a calculation and a turnover arrangement depends on business figures. Those methods require different evidence. Ask the surveyor to explain the actual question posed by the clause before collecting comparable rents or building a spreadsheet. A market opinion prepared for another purpose may not answer the contractual valuation question in your lease.

For a market review, identify assumptions about the premises, length of the hypothetical term, permitted use and repair condition. Look for matters to be disregarded, including relevant tenant improvements where the clause provides for them. Give the surveyor the fit-out history and supporting licences rather than merely the current floor plan. If a rent quoted for another unit includes incentives or a different service arrangement, flag that difference. The useful comparison concerns the terms and circumstances of the letting, not simply a neighbouring property's advertised annual figure. ## Test calculations without hiding their assumptions For an index-based clause, establish the index, reference months, review date and any stated cap, minimum or rounding method. Work through the calculation using the actual published inputs when available and label hypothetical figures clearly when they are not. If the index has changed or ceased to be published, ask how the lease addresses substitution. Avoid selecting a replacement series merely because it gives a plausible number. A mathematically accurate calculation can still be contractually wrong if it uses the wrong period or reference measure.

For turnover rent, ask how the agreement defines the sales included and how returns, online orders or shared trading channels are treated. Identify the reporting period and evidence required to support the figures. A business changing its sales model should discuss the contractual treatment rather than assume its accounting categories align automatically with the lease. Keep sensitive trading information within the agreed reporting process and seek advice about a disputed request. The review needs a reliable calculation based on the defined turnover, not an unexplained total taken from a management dashboard. ## Read new statutory provisions with their commencement rules The English Devolution and Community Empowerment Act 2026 contains provisions concerning business-tenancy rent reviews and arrangements for new tenancies. Its enacted text includes commencement and transitional machinery. ^[3] Ask the solicitor to assess the particular lease or proposed variation against the provisions actually in force and any applicable protected arrangements. Do not assume that every existing upward-only clause has been rewritten, or that using an old lease precedent is appropriate for a new grant. The document's date and history form part of the analysis.

Keep the legal framework separate from the valuation exercise. A surveyor may need advice on whether a contractual floor or another element can operate before finalising the reviewed rent. Supply any agreement for lease, renewal arrangement or variation relevant to that question. If advice refers to an anticipated commencement date, distinguish that expectation from a rule already applicable to the transaction. A clear instruction should state which mechanism is to be valued and which legal assumptions remain subject to confirmation, preventing an uncertain legal premise from becoming an apparently definitive financial result. ## Manage the review until the agreed figure is implemented Identify who can start the review, what notices or procedural steps are required and how disagreement is referred for determination. Ask what the appointed decision-maker's role would be and how the parties' evidence is supplied. Diary the relevant dates without assuming that silence always leaves rent unchanged. At the same time, establish what must be paid while the review is outstanding and whether the final result may create a balancing payment or interest. The finance team needs instructions based on the lease and current advice, not informal expectations.

When agreement is reached, record it in the form required for the transaction and check the effective date carefully. Reconcile payments already made with the new liability and retain the calculation supporting any adjustment. Keep the rent review record with the lease, valuation advice and relevant correspondence for the next review or assignment. If the outcome includes a separate concession, identify its duration and conditions. A revised invoice alone may show what the landlord requests, but it does not necessarily provide the full evidence of the agreement the parties intended to make.