RHW12 – Notice of Variation of Rent

Tenant Rights & Responsibilities Wales 4 min read · published March 09, 2026 Flag of Wales

If you're a tenant in Wales and you receive a written rent variation notice, it can feel confusing and worrying. This guide explains what a Notice of Variation of Rent is, when landlords can propose an increase, and what options renters have to respond or challenge the change. Use plain steps to check the notice, record dates and amounts, and seek tribunal help if needed. Practical examples show how to reply, what evidence helps, and how the First-tier Tribunal handles disputes. The information is aimed at tenants and renters seeking clear, up-to-date guidance on rent increases in Wales. It includes practical action steps, where to find official forms, and how to prepare for a tribunal hearing if you decide to challenge the increase. If you rent with a written contract or under an assured tenancy, read the notice carefully and act quickly.

What the RHW12 notice is and when landlords can use it

An RHW12 Notice of Variation of Rent is the written proposal a landlord gives to change your rent. Tenants should check the notice for: the new amount, the date the change takes effect, and the legal reason for the increase. If the landlord relies on statutory procedures or a contractual clause, those legal bases come from the Housing Act 1988 or older rent laws as relevant in Wales[3][4].

Example

A landlord sends a notice stating rent will rise from £750 to £850 from 1 October. You should note the date you received the notice, check your tenancy agreement for any rent review clause, and check whether the notice period matches the law or contract.

How to respond when you receive a notice

  • Check the dates: note when you received it and the effective date stated by the landlord.
  • Compare the notice to your tenancy agreement and any rent-review clause.
  • Work out the increase in weekly or monthly terms so you understand the affordability impact.
  • Contact the landlord in writing if something in the notice seems incorrect and keep a copy of your reply.
  • If you cannot agree, you may apply to the tribunal for a decision instead of accepting the increase.
Always keep dated copies of any notice and any reply you send to your landlord.

Official forms and documents tenants should know about

  • RHW12 – Notice of Variation of Rent: the landlord's written notice proposing a change; tenants should check amounts, dates and reasons and save a dated copy for their records[1].
  • Section 13 / Housing Act 1988 references: limits and procedures for certain rent variations under assured tenancies and related statutory provisions are set out in the Housing Act 1988 and associated guidance[3].
  • First-tier Tribunal (Property Chamber) application process: if you formally dispute a rent increase you will use the tribunal's application steps and evidence rules to ask for a decision[2].
Submit any tribunal application as soon as possible once you decide to dispute a notice.
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Practical steps to challenge or negotiate a rent increase

Follow these tenant-focused steps to protect your position and prepare for any formal process.

  • Write to your landlord outlining why you disagree and propose a meeting or alternative amount.
  • Gather evidence such as your tenancy agreement, recent rent receipts, and comparable local rents if affordability is disputed.
  • Seek informal mediation or advice from an official service before escalating to a tribunal.
  • If you apply to the First-tier Tribunal, follow their directions and provide copies of the RHW12 notice and your written replies.
Don’t stop paying the undisputed portion of rent while pursuing a dispute unless directed by the tribunal.

FAQ

Can my landlord increase rent at any time?
Not automatically: increases must follow your tenancy agreement or the statutory process; a formal notice (like RHW12) must be served and allow any required notice period.
How long do I have to challenge a variation?
Act quickly: time limits can vary. You should respond in writing, seek advice, and if needed apply to the tribunal promptly because delays may affect remedies.
Will the tribunal always side with the tenant?
No: the tribunal considers evidence from both sides and decides based on the law, terms of the tenancy, and fairness; good documentary evidence improves your case.
Where do tenants apply if they cannot agree with a landlord?
Tenants can apply to the First-tier Tribunal (Property Chamber) for a decision on a disputed rent variation or related issues.

How-To

  1. Read the RHW12 notice carefully and note the effective date and new amount.
  2. Check your tenancy agreement and collect evidence such as receipts, photos, and communications.
  3. Write to the landlord to try to negotiate or request clarification, keeping a copy of your reply.
  4. If you cannot agree, apply to the First-tier Tribunal (Property Chamber) with your evidence and the RHW12 notice.

Key Takeaways

  • Always check dates and amounts on any rent variation notice and keep dated copies.
  • Attempt negotiation in writing first, then consider tribunal application if you cannot reach agreement.

Help and Support


  1. [1] Welsh Government – Private renting in Wales
  2. [2] First-tier Tribunal (Property Chamber) – GOV.UK
  3. [3] Housing Act 1988 – legislation.gov.uk
  4. [4] Rent Act 1977 – legislation.gov.uk

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Emma Clarke
Emma Clarke

UK Housing Rights Researcher, Tenant Rights UK

Emma covers private and social renting across England and Wales, with a strong grounding in the Renters (Reform) Act, Section 21 no-fault evictions, and deposit protection schemes. She has been writing about UK tenant rights and housing policy since 2017.