Wales: the C5 and C6 use classes for second homes
Since October 2022 Wales has separate use classes for second homes and short-term lets. What that means for buying, switching letting models and proving an existing use.
Wales has three residential use classes where England has one. Since 20 October 2022, the Use Classes Order as it applies in Wales distinguishes class C3, a dwelling used as a sole or main residence, from class C5, a dwelling used otherwise than as a sole or main residence, and class C6, use as short-term let accommodation. The C5 C6 use class position in Wales has no English equivalent, and for anyone buying property in a Welsh coastal or national park area it is now the first thing to check, ahead of condition, parking or anything else.
Everything below applies to Wales only. England's Use Classes Order still has a single C3 class covering all of this, and nothing here transfers.
What C5 and C6 cover
The three classes are defined by how the dwelling is occupied rather than by what it looks like.
C3 is use as a dwellinghouse as a sole or main residence. That covers an owner-occupier, a long-term tenant and the usual household arrangements within the class.
C5 is use as a dwellinghouse otherwise than as a sole or main residence. A second home kept for the family's own use sits here, whether or not it is ever let.
C6 is use as short-term let accommodation. A property let out on short stays to successive occupiers falls into this class.
A dwelling in use as a second home on the day the amendment came into force fell into C5 from that date, and one in use as a short-term let fell into C6, without anyone applying for anything. That matters when you buy, because the lawful use you inherit is a question of historic fact rather than a question of what the deeds say.
Properties outside the C classes are unaffected. A purpose-built hotel remains in its own class, and a property that has only ever been commercial visitor accommodation may never have been a dwellinghouse at all.
Which changes need permission, and which do not
Welsh Ministers paired the new classes with permitted development rights, so movement between C3, C5 and C6 does not normally require planning permission. The policy intent was to create the planning tool without imposing a blanket requirement across Wales.
| Change | Position in Wales |
|---|---|
| C3 to C5, C3 to C6 | Permitted development, unless a direction removes the right |
| C5 to C3, C6 to C3 | Permitted development, unless a direction removes the right |
| C5 to C6 and back | Permitted development, unless a direction removes the right |
| Any of these in an area covered by a direction | Planning permission required |
Note the direction of travel. In an area where the right has been removed, converting a family home into a holiday let needs permission, while converting a holiday let back into a family home may also need permission depending on how the direction was drawn. Read the direction itself rather than assuming it only works one way.
Wales also still operates under the General Permitted Development Order of 1995 as amended, rather than the 2015 Order that applies in England. Anyone used to English practice should check the Welsh order text directly, because article numbering, class lettering and the conditions differ. Divergence of this kind is normal across the four nations, and the position on householder permitted development in Northern Ireland shows how far the rules can part company.
Where directions remove the right
A local planning authority can remove the permitted development right for an area by direction, in the same way that English authorities remove householder rights or control houses in multiple occupation. Several Welsh authorities with high concentrations of second homes have consulted on or made directions.
Three practical points.
Directions are area-specific and can be drawn to cover a single community, a ward or a whole authority. There is no national list that is reliably current, so the authority's own register is the source.
A direction does not make an existing C5 or C6 use unlawful. It controls future changes of use. A property already lawfully in C6 stays in C6.
And a direction removes the permitted development right rather than imposing a ban. You can still apply, and the authority decides on the development plan and material considerations, which will include evidence about housing supply, the proportion of dwellings in the community not in permanent occupation, and the effect on the Welsh language in authorities whose plans address it.
Proving the existing lawful use
Because the classes were allocated by reference to actual use rather than by registration, evidence is everything, and the burden falls on whoever asserts the use.
The evidence that persuades, roughly in order of weight:
- Council tax or non-domestic rates records showing how the property was treated, and from when.
- Letting records, booking histories and accounts covering the relevant period.
- Utility consumption patterns, which distinguish continuous occupation from intermittent use.
- Electoral roll entries and correspondence addresses.
- Statutory declarations from the owner and occupiers, as supporting rather than primary evidence.
Where the position matters commercially, apply for a certificate of lawful existing use or development under section 191 of the Town and Country Planning Act 1990. It is the only formal confirmation, it binds the authority, and it is the document a lender's solicitor will accept. A seller's assurance is not.
Set the evidence out properly in the application, with a Planning Statement that sets the chronology against the classes and identifies which document proves which period. A certificate application that leaves the officer to assemble the timeline usually comes back with a request for more information.
What this means for a holiday let business
Four consequences follow for an investor.
Buying in a direction area with the intention of short-term letting means budgeting for an application and accepting it may be refused. Price that risk rather than assuming the use follows the purchase.
Buying an operating holiday let in a direction area is a different proposition, because you are buying an existing lawful use. The value of the certificate rises accordingly.
Switching a let property between long-term tenancy and short-term letting is a change of use in Wales in a way it is not in England, so a landlord moving between models needs to check the direction position each time.
And mixed patterns create difficulty. A property let on short stays in summer and occupied by the owner in winter sits awkwardly between C5 and C6, and the lawful use will be judged on the primary use over a period. Keep records that show which it is.
Where the tax rules sit alongside the planning rules
Two Welsh tax measures operate in the same space and are frequently confused with the use classes.
Council tax premiums on second homes and long-term empty dwellings are set by each authority within a maximum that Welsh Government raised to 300 per cent from April 2023. The premium is a council tax decision, not a planning one.
The criteria for a self-catering property to be assessed for non-domestic rates rather than council tax were tightened from April 2023, requiring the property to be available to let for at least 252 days and actually let for at least 182 days in the previous 12 months.
Satisfying the rates threshold does not determine the planning use class, and failing it does not change it either. The two regimes ask different questions, and an adviser who treats the rating position as proof of the planning position is making a mistake that a certificate application will expose.
Welsh Government has also consulted on a statutory licensing scheme for visitor accommodation. As at October 2026 check the current position on gov.wales before advising a client, because commencement and scope have moved.
Checking a property before you buy
Five checks, and they take an afternoon.
The authority's register of directions, for the community the property sits in. The planning history for the address, including any earlier certificate. The council tax or rating record, requested from the seller with the account history. The seller's letting records if a commercial use is claimed. And the local development plan policies on second homes and visitor accommodation, which will decide any application you have to make.
PlanScope's drafting is grounded in the National Planning Policy Framework and English local plans, so a Welsh application needs the reviewer to check Planning Policy Wales, the relevant Technical Advice Notes and the local development plan. Devolved procedure differs too, as the two tier planning system in Northern Ireland illustrates.
Enter your postcode on PlanScope to see which reports a change of use application is likely to need.
This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
What is the difference between C3, C5 and C6 in Wales?
C3 is a dwelling used as a sole or main residence, covering owner-occupiers and long-term tenants. C5 is a dwelling used otherwise than as a sole or main residence, which captures second homes. C6 is use as short-term let accommodation. The classes are defined by how the dwelling is occupied rather than by its construction.
Do I need planning permission to start a holiday let in Wales?
Not normally, because Welsh Ministers paired the new classes with permitted development rights for movement between C3, C5 and C6. Where a local planning authority has made a direction removing that right for the area, permission is required and the application is decided on the development plan and material considerations.
Does a direction make an existing holiday let unlawful?
No. A direction controls future changes of use, so a property already lawfully in C6 stays in C6. That is why buying an operating holiday let in a direction area is a different proposition from buying a family home and intending to convert it, and why a certificate confirming the existing use carries real value.
How do I prove the lawful use class of a Welsh property?
With council tax or rating records, letting and booking histories, utility consumption patterns and electoral roll entries, supported by statutory declarations. Where it matters commercially, apply for a certificate of lawful existing use under section 191 of the Town and Country Planning Act 1990, which is the only formal confirmation.
Does meeting the self-catering rates threshold fix the use class?
No. The requirement to be available to let for 252 days and actually let for 182 days in the previous 12 months determines whether a property is assessed for non-domestic rates. It is a separate question from the planning use class, and treating one as proof of the other is a common and expensive error.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.