Tribunal Guide

Challenging a Rent Increase at Tribunal: How It Works

Last reviewed Mahesh Venkat
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If your landlord has served a Form 4A rent increase notice and you want to challenge the proposed rent, here is what the tribunal process involves — from application through to decision.

How to apply

Apply using Rents 1 — the tenant’s application to the First-tier Tribunal (Property Chamber). Submitting the application is free, and there is then a £47 payment to process it. You can generate a Rents 1 application to get started. You must submit before the effective date stated in your rent increase notice. After that date passes without a challenge, the new rent takes effect automatically.

Note on form names: Most content online refers to “Form 6.” That was the old name. The current form is called Rents 1 and has been available on GOV.UK since March 2025.

If you think the notice itself may be defective — wrong form, wrong dates, insufficient notice period — that is a separate challenge. See our guide on invalid rent increase notices and Section 13B.

What “open market rent” means

The tribunal doesn’t rule on whether your landlord’s proposed figure is fair in any abstract sense. It determines what the property would reasonably let for on the open market — what a new tenant would pay, under equivalent terms, if the property were advertised today. That is the legal standard under Section 14 of the Housing Act 1988.

What the tribunal ignores

When setting market rent, the tribunal must disregard:

  • Any discount for being a sitting tenant
  • Improvements you funded yourself (new kitchen, flooring, boiler, etc.)
  • Any reduction in value caused by your own breach of the tenancy

If you improved the property at your own expense, the tribunal sets rent as if those improvements were not there.

Evidence

The panel includes RICS-qualified surveyor members who bring their own knowledge of local rental markets — you do not need to hire an expert. Submit comparable lettings: similar properties nearby that have recently let, ideally within the last 12 months. Rightmove and Zoopla printouts are accepted. Get everything in at least 7 days before the hearing; late evidence can be excluded.

For step-by-step guidance on finding, selecting, and presenting comparables, see our evidence guide.

Paper vs oral hearing

Many rent cases are decided on the papers without a hearing. If the property’s condition or what’s provided is genuinely disputed between the parties, request an oral hearing — the Upper Tribunal has overturned multiple paper decisions where contested facts were not properly tested.

What a hearing looks like

A conference table, not a courtroom. The panel — a judge and one or more surveyor members — sits across from the parties. No wigs, no formal conventions. The tribunal is inquisitorial: the panel asks questions of both sides throughout. Legal representation is not required and is unusual in private rent cases. Both the tenant (as applicant) and landlord (as respondent) attend and present their case. Remote hearings by video are available.

Timeline

The honest answer: 6–9 months from application to decision for cases going to an oral hearing. Based on 2023–24 First-tier Tribunal data (before the RRA volume surge), the average wait from application to hearing was around 24 weeks, followed by a written decision within 6 weeks of the hearing. With the significantly increased caseload expected from May 2026, this may lengthen further.

What to pay while you wait: Continue paying your old rent. Under the Renters’ Rights Act 2025, the new rent only takes effect from the first rental period after the tribunal determination — there is no backdated arrears risk once you have filed an application.

For a full stage-by-stage breakdown and what to expect after May 2026, see our guide on how long a rent tribunal takes.

The outcome

The tribunal sets the open-market rent. Under the Renters’ Rights Act 2025, it cannot exceed the landlord’s proposed figure — the tribunal can match or reduce it, not increase it. The new rent takes effect from the first rental period after the determination. There is no backdating.

After the decision

Written reasons are not issued automatically. Request them within 1 month of receiving the decision if you want to understand the reasoning or are considering an appeal. Appeals go to the Upper Tribunal (Lands Chamber) on points of law only, within 28 days.

Using the tribunal

Engaging with the tribunal process — whether as a tenant applying or a landlord responding — does not put the tenancy at risk. Section 21 no-fault evictions are abolished under the Renters’ Rights Act 2025.

If you are a new tenant and want to challenge the rent you agreed to at the start of your tenancy, that is a separate right — see our guide on challenging your starting rent.

For a full overview of all the protections introduced by the Renters’ Rights Act 2025, see our guide to the Act.

Frequently asked questions

Apply using Rents 1 — the application to the First-tier Tribunal (Property Chamber). Submitting is free, and there is then a £47 payment to process the application. You must submit before the effective date stated in your rent increase notice. After that date, the new rent takes effect automatically.
Paper decisions can be faster, but cases going to an oral hearing typically take 6–9 months from application to decision — around 24 weeks to the hearing, then up to 6 weeks for the written decision. The First-tier Tribunal is facing significantly increased volume from May 2026. Build in that realistic expectation before you apply.
The tribunal panel includes RICS-qualified surveyor members who apply their own knowledge of local rental markets. They also consider comparable lettings submitted by the parties — similar properties nearby that have recently let. Rightmove and Zoopla evidence is accepted.
No. Under the Renters' Rights Act 2025, the First-tier Tribunal cannot set rent above the figure the landlord proposed in the Form 4A notice. The worst outcome is that the tribunal confirms the proposed figure.
Yes. Appeals go to the Upper Tribunal (Lands Chamber) on points of law only, within 28 days of the decision. Written reasons are not issued automatically — you must request them within 1 month of the decision if you want to understand the reasoning or consider an appeal.

Sources

Official materials and primary sources used to review this guide.

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