Tribunal challenge to a rent increase
Under the Renters' Rights Act 2025 a tenant can refer a proposed rent increase to the tribunal, which decides the open market rent for the property. The tribunal cannot set a rent higher than the land
5 min read · Updated 22 August 2026
Overview
Under the Renters' Rights Act 2025 a tenant can refer a proposed rent increase to the tribunal, which decides the open market rent for the property. The tribunal cannot set a rent higher than the landlord proposed, so a badly evidenced notice can only go one way.
Why it matters
Landlords who serve a round number increase with no comparables often lose part of it at tribunal and gain a soured relationship.
Legal requirements
- The increase must be proposed on the prescribed notice with the correct minimum notice period.
- Only one increase can be proposed in any twelve month period.
- The tribunal determines the open market rent for the property as it stands.
- The tribunal cannot award more than the landlord asked for.
Common mistakes
- Using an out of date notice form or the wrong effective date.
- Justifying the increase by your mortgage costs rather than market evidence.
- Comparing to newly refurbished properties when yours is dated.
- Ignoring the tenant's letter and letting the matter go straight to a hearing.
Practical guidance
- Gather three to five genuine comparables from the same area and property type.
- Photograph the property so condition is properly reflected in the assessment.
- Explain the increase to the tenant in plain terms before the notice arrives.
- Consider a slightly lower negotiated figure rather than a contested hearing.
What the tribunal looks at
The panel assesses what a willing tenant would pay a willing landlord for this property, in its actual condition, on the actual terms. Tenant improvements are disregarded. Disrepair reduces the figure. Furnishing, parking, energy efficiency and the size of the rooms all feed in. Bring evidence for each of those points rather than a general assertion that rents have risen.
Preparing your comparables
A comparable is a let property, similar in type, size, condition and location, with a recent agreed rent. Screenshots of asking prices are weaker than agreed lettings, so include both where you can. Note the date, the address, the rent, the number of bedrooms and any obvious differences from your property, and be candid about where yours is weaker.
Frequently asked questions
Can the tribunal raise the rent above my notice figure?
No. Your proposed figure is the ceiling.
Does the tenant pay the old rent while the case runs?
The increase generally takes effect from the date the tribunal decides, or a later date if hardship is found.
How much does it cost?
There is no significant fee for the tenant, which is why the process is used frequently. Prepare accordingly.
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This guide is general information for UK landlords and letting agents, not legal advice. Rules differ across England, Wales, Scotland and Northern Ireland — check your local requirements or take advice before acting.