Do You Need Planning Permission for a Catio in the UK?
If you're thinking about getting a catio for your cat, one of the first questions that comes up is whether you need planning permission. It's a fair concern - and the good news is that in most cases, the answer is no.
This guide covers everything you need to know about permitted development rights, the situations where you might need permission, and how to check quickly and easily if you're unsure.
What Are Permitted Development Rights?
Permitted development rights allow homeowners to make certain changes to their property without needing to apply for formal planning permission. These rights are set out in national planning policy and apply automatically to most residential properties in England, Scotland, and Wales.
They cover a wide range of alterations - from loft conversions to garden outbuildings - and were designed to reduce the burden on both homeowners and local planning authorities for works that are unlikely to cause harm to neighbours or the surrounding area.
Does a Catio Fall Within Permitted Development?
In the vast majority of cases, yes. A catio is typically treated as a garden enclosure or outbuilding, similar to a shed or greenhouse. Provided it meets the standard conditions below, you should not need to apply for planning permission.
The main conditions to be aware of are:
• The total area covered by outbuildings and garden structures should not exceed 50% of the total garden area
• The catio should not be positioned forward of the principal elevation of the house (i.e. in front of the front wall)
• If the structure is within 2 metres of a property boundary, it should be no more than 2.5 metres in height
• It should not be a self-contained living space or intended for commercial use
Most catios - whether freestanding or wall-mounted - comfortably fall within these conditions. A typical garden catio is unlikely to cover more than a small fraction of your outdoor space, and heights are generally well within the permitted thresholds.
When You Might Need Permission
There are certain situations where permitted development rights either don't apply or are restricted. It's worth checking if any of the following apply to you.
Listed Buildings
If your home is a listed building, permitted development rights are significantly restricted. Even minor external structures in the garden may require listed building consent. Contact your local planning authority before proceeding.
Conservation Areas
Properties in designated conservation areas often have reduced permitted development rights. The rules vary by area, so it's worth checking with your local council if you're in one.
Flats and Maisonettes
Permitted development rights for external structures generally don't apply to flats and maisonettes. If you're in a flat with access to a communal garden, you'll likely need permission from your freeholder or management company, not just the local authority.
Leasehold Properties
Even if planning permission isn't required, your lease may contain restrictions on alterations to the property or garden. Always check your lease terms alongside planning rules.
Properties With Restricted PD Rights
In some cases, planning conditions attached to a previous application may have removed permitted development rights from a property. You can check this on the Planning Portal or by contacting your local authority.
Wall-Mounted vs Freestanding - Does It Make a Difference?
In most cases, the distinction doesn't significantly affect planning status - both types of catio are typically covered by permitted development rights for garden structures.
That said, a wall-mounted catio that is permanently fixed to the main structure of the house may in some circumstances be considered an extension rather than a garden enclosure. If you're attaching a catio directly to your house wall, it's worth doing a quick check with your local authority if you have any doubt.
A freestanding catio placed in the garden is the most straightforward option from a planning perspective and is unlikely to raise any concerns.
How to Check With Your Local Authority
If you're in any doubt, the quickest route is to use the Planning Portal at planningportal.co.uk, which has guidance for England and Wales. You can also submit a pre-application enquiry to your local authority - this is usually free or low cost and typically gets a response within a few days.
Most local planning officers are happy to give informal advice over the phone or by email, and many homeowners find that a quick call is enough to put their mind at rest.
Frequently Asked Questions
Can I put a catio in my front garden?
This is where it gets more restrictive. Structures in front gardens that are not screened by walls or fences over 1 metre in height are typically outside permitted development. If your front garden is enclosed, it may be fine - but it's worth checking with your local authority first.
Do I need permission for a catio if I rent?
Planning permission and landlord permission are two separate things. Even if no planning permission is required, you'll need your landlord's written consent before making any additions to the garden. A freestanding catio is often easier to negotiate as it causes no permanent alteration to the property.
What if I live in a conservation area?
Your permitted development rights may be restricted. Contact your local planning authority for specific guidance before installing any structure. It's straightforward to do and saves complications later.