Understanding Planning Permission for Conservatories

You might be surprised to learn that adding a conservatory to your home often doesn't require planning permission. These permissions are actually called 'permitted development' rights, and they allow you to build without a full application, as long as your project fits within certain limitations and meets specific criteria.

However, if the conservatory you plan to build exceeds these set boundaries, you will almost certainly need to apply for what's known as householder planning permission.

Be aware that if your project introduces more than 100 square metres of new floor space, you could also face a charge under the Community Infrastructure Levy (CIL), a charge local authorities can apply to help fund infrastructure projects.

If you're ever unsure whether your proposed conservatory needs planning permission, we strongly recommend you contact your Local Planning Authority (LPA) for advice. Make sure to do this before you begin any construction work.

Do These Rules Apply to Your Home?

These permitted development rules primarily apply to houses. When determining eligibility, your local authority will consider the total increase in size from your planned conservatory along with any previous extensions you've added. It's crucial to understand that these rules do NOT apply to:

• Flats or maisonettes.

• Homes that were converted from other buildings, or houses created through specific permitted development rights for 'Changes of use' (look up Schedule 2, Part 3, Classes G; M; MA; N; P; PA and Q for details) or 'New Dwellinghouses' (Schedule 2, Part 20).

• Any other types of buildings that aren't private houses.

• Areas where specific planning conditions, an Article 4 Direction (which is a special control that removes permitted development rights), or other local restrictions might either limit or entirely remove your permitted development rights.

For a comprehensive understanding of how these permitted development rules relate specifically to your plans, we highly advise you to consult the full official guidance.