Is There a Rent Cap in Wales? What Private Landlords Need to Know

No Percentage Cap for Private Landlords

As of October 2026, there is no statutory percentage ceiling, index-linked formula or rent-control zone restricting private rent increases in Wales. If you let on a periodic standard contract, you may propose any new rent figure — subject to the procedural rules in Section 123 of the Renting Homes (Wales) Act 2016.

That means no CPI link, no maximum percentage and no local authority approval requirement for the amount itself.

Where the Confusion Comes From

Two sources of misunderstanding recur on landlord forums:

Social housing rent caps. The Welsh Government does set an annual rent policy for community landlords — councils and housing associations. The formula has historically been CPI + 1%, with annual maximum caps (6.7% was applied in some recent financial years). This applies exclusively to secure contracts issued by social housing providers. It has no bearing on private standard contracts.

English reform headlines. Media coverage of the English Renters' Rights Act, which changes Section 13 rent increase rules in England, does not extend to Wales. Welsh occupation contracts operate under entirely separate legislation. Section 13 of the Housing Act 1988 is not the rent-variation route for Welsh occupation contracts; Section 123 of the Renting Homes (Wales) Act 2016 applies instead.

The Senedd has discussed private-sector affordability in a White Paper on Fair Rents and Adequate Housing, but no general percentage cap for private landlords has been enacted into law.

What Actually Limits a Rent Increase in Wales

While there is no cap on the amount, four constraints apply to a statutory rent variation:

1. Procedural compliance — Use Form RHW12 or a notice substantially to the same effect. A written agreement is a separate route; the landlord must provide a written statement of variation within 14 days of it taking effect.
2. Two months' notice — The contract-holder must receive at least two full calendar months' written notice.
3. 12-month frequency — Rent cannot be increased more than once in any 12-month period from the date the last increase took effect.
4. Tribunal review for converted contracts — If the contract originated as an AST before 1 December 2022, the contract-holder can refer your proposed figure to the Rent Assessment Committee. The committee determines the open-market rent and can set it lower, equal to or higher than what you proposed.

For newly granted periodic contracts (created from 1 December 2022 onward), there is no tribunal challenge route. The proposed rent takes effect automatically once the notice period expires, provided the notice is procedurally valid.

Practical Implications

The absence of a cap does not mean the amount is irrelevant. An aggressive above-market increase on a converted contract risks a Rent Assessment Committee referral that could set the rent lower than your current figure. Even on a newly granted contract, setting rent well above local comparables gives the contract-holder a reason to leave at the end of the notice period.

The Wales Rent Increase Guide covers how to research local comparables, assess tribunal exposure on converted contracts and complete the entire Section 123 process from pre-notice audit to proof of service.

See more Wales guides →