For decades, upward-only rent reviews have been a genuine bedrock of UK commercial property investment, underpinning valuations, funding models, and lending decisions across the entire sector. That’s now changing – the English Devolution and Community Empowerment Act 2026 received Royal Assent in April 2026, banning this mechanism for new commercial leases, with genuinely significant implications for how investors assess future income security.
What Upward-Only Rent Review Actually Means
Our UK Commercial Finance hub covers the wider lending landscape; this page focuses specifically on a lease mechanism that’s genuinely central to how commercial property income has been assessed for decades. An upward-only rent review means your rent can increase, or stay the same, at each review point – but it can never fall below the current level, even if genuine market rents have declined significantly in the meantime.
Why This Has Been a Genuine Cornerstone of Investment Security
For landlords and investors, upward-only clauses have provided a genuine income floor, supporting valuations and lending decisions on the basis that rental income could only move in one direction over time. This is exactly why our Investment Mortgages page covers Interest Coverage Ratio assessment against current rental income – lenders have historically had genuine confidence this income wouldn’t fall during the mortgage term, at least not through a rent review.
The Genuine 2026 Legislative Change Worth Understanding
It’s worth knowing clearly: the English Devolution and Community Empowerment Act 2026 introduces a statutory ban on upward-only rent review mechanisms in new business tenancies, though the ban itself isn’t expected to come into force until 2027 at the earliest, pending commencement regulations. Once in force, any rent review mechanism preventing rent from falling below a minimum level will become unenforceable for genuinely new leases, meaning rent reviews will need to allow movement both up and down in line with actual market conditions.
Why This Isn’t Retrospective, With One Genuine Exception
It’s worth understanding this applies to new leases going forward, not existing agreements – your current lease’s upward-only clause remains valid and enforceable if it was granted before the relevant commencement date. There’s a genuinely targeted exception worth knowing about though: where a tenancy renewal arrangement was entered into on or after 17 March 2026, a future renewal lease may still be caught by the ban, even if the original lease predates the Act – a provision specifically designed to prevent landlords locking in upward-only terms just ahead of the legislation taking effect.
Why This Genuinely Matters for Future Investment Valuations
Our piece on commercial mortgage valuations covers how sensitive commercial property values genuinely are to income security assumptions; it’s worth understanding that removing the upward-only floor for new leases means valuers and lenders will need to factor in genuine downside rent risk for properties let on the newer style of lease, potentially affecting achievable loan-to-value on investment purchases going forward.
How the Actual Rent Review Process Works
Where parties can’t agree on a reviewed rent under an open market clause, the dispute is typically referred to an independent expert or an RICS arbitrator, following whatever procedure the lease itself specifies. It’s worth understanding this involves assessing a genuinely hypothetical letting of the property on the open market at the review date, with specific lease terms often disregarded or assumed differently to reflect a fair market comparison.
The Deemed Rent Trap Worth Knowing About
It’s worth understanding a genuinely important practical point: most leases specify that if a rent review isn’t formally triggered within a certain period after the review date, the rent is deemed to have been agreed at the current level. This makes acting before these deadlines pass genuinely important – missing a review window can mean losing out on a rent increase you’d otherwise have been entitled to, worth diarising carefully rather than assuming reviews happen automatically.
Why This Genuinely Interacts With Lease Length Considerations
Our piece on break clauses covers another lease mechanism landlords and tenants read in genuinely opposite ways, worth reading alongside this page since both terms shape the real income security and flexibility a lease provides – rent review determines how much you’re paid, break clauses determine how long you’re guaranteed to be paid it.
Why Retail Property Has Been Particularly Affected by This Debate
Our Retail & Shop Mortgages page covers a sector where upward-only rent reviews have been particularly criticised over recent years, given genuine market rent declines in some secondary retail locations that tenants argued their leases simply didn’t reflect – worth understanding as part of the genuine backdrop that led to this legislative change.
What This Means for New Leases You’re Considering Now
Given the ban isn’t yet in force, it’s worth understanding current market practice remains unchanged for the time being, though it’s genuinely worth reviewing heads of terms and renewal clauses on any new lease being negotiated now with this upcoming change in mind, rather than assuming today’s standard terms will remain the market norm indefinitely.
Getting Genuinely Current Advice on Lease Terms
Given how significant this legislative change genuinely is, and how much uncertainty remains around exact commencement timing, it’s worth having a proper conversation about how rent review structures affect your specific investment strategy before committing to a new lease or purchase. Get in touch with details of your circumstances, and we’ll help you understand how this fits into your wider commercial property position.
Frequently Asked Questions
What does an upward-only rent review clause actually mean?
Your rent can increase or stay the same at each review, but can never fall below the current level, even if market rents have genuinely declined.
Has upward-only rent review been banned in the UK?
Yes, for new leases – the English Devolution and Community Empowerment Act 2026 received Royal Assent in April 2026, though the ban itself isn’t expected to come into force until 2027 at the earliest.
Does this ban affect my existing lease?
Generally not – the ban applies to new leases going forward, though a targeted exception can catch renewal leases where the renewal arrangement was entered into on or after 17 March 2026.
What happens if a rent review isn’t triggered in time?
Most leases treat the rent as deemed agreed at the current level if the review isn’t formally triggered within the specified window, worth diarising carefully.
How are disputed rent reviews actually resolved?
Typically referred to an independent expert or RICS arbitrator, following the procedure specified in the lease, assessing a hypothetical open market letting at the review date.
Get in touch with details of your lease and investment plans, and we’ll help you understand how rent review structures genuinely affect your position.
