Planning a new conservatory is exciting. Then someone mentions planning permission, and suddenly the whole thing feels a lot more complicated than it needs to be.

The good news is that most homeowners in the UK do not need to apply for planning permission at all. As a trusted local conservatory company, we help people through this process every day. This guide breaks it all down clearly so you can move forward with confidence.

What Are Permitted Development Rights?

Permitted development rights are rules set out by the UK Government that allow homeowners to carry out certain home improvements without needing to submit a formal planning application. Most standard conservatories fall within these rights, which means you can build a conservatory without going through the full planning process, as long as your project meets specific criteria. 

This is genuinely good news for the majority of homeowners. It keeps the process quick and easy, so you can focus on choosing your conservatory designs rather than filling in council paperwork.

When Does a Conservatory Not Need Planning Permission?

Most conservatories in England do not need planning permission, as they fall under Class A permitted development, provided they extend no more than 4 metres from the rear wall for detached houses, or 3 metres for semi-detached and terraced properties, have eaves no higher than 3 metres, and total extensions do not cover more than 50% of the garden. 

To summarise, your conservatory is likely to qualify under permitted development if:

  • It is a single-storey structure
  • It sits at the rear of the property, not the front
  • It does not cover more than half the land around the original house
  • The height does not exceed 4 metres
  • It does not extend beyond the permitted depth limits for your property type

If your project meets all of these conditions, you are in a strong position to build a conservatory without applying for planning permission.

When Will You Need Planning Permission?

There are situations where permitted development does not apply. You will likely need to apply for planning permission if:

  • Your home is a listed building
  • Your property sits within a conservation area or national park
  • Your conservatory would extend beyond the permitted depth limits
  • Your permitted development rights have been removed by an Article 4 Direction
  • The conservatory would sit forward of your home’s principal elevation, facing a road

It can also be sensible to apply for a Lawful Development Certificate even where planning permission is not strictly required. The Planning Portal describes this as a legal document confirming the lawfulness of the work, which can be helpful later when selling the property or answering questions from buyers and solicitors. 

We always advise checking your specific circumstances before committing to a conservatory design. If you are unsure, we can point you in the right direction.

What About the 10-Year Rule?

This is worth knowing about. Previously, if a conservatory was built without permission and the council did not notice within four years, it became immune from enforcement action. In 2026, this has been unified into a single 10-year period, meaning any breach of planning control can be challenged at any point within 10 years of the work being substantially completed. 

In practical terms, this means it is more important than ever to get things right from the start. Building without the correct permissions is not a risk worth taking, particularly if you plan to sell your home in the future.

Do Conservatories Need to Meet Building Regulations?

Planning permission and building regulations are two separate things, and it is easy to confuse them.

A conservatory may be permitted development for planning purposes, but that does not automatically mean all building regulations can be ignored. In most cases, a conservatory that is separated from the main house by external-quality windows and doors and has its own independently controlled heating will be exempt from building regulations. However, if you are creating an open-plan layout by removing a wall between the house and the conservatory, building regulations will apply. 

As a conservatory company with years of experience, we make sure every conservatory installation we carry out is compliant and fully documented, giving you complete peace of mind from the outset.

What Style of Conservatory Can You Build?

Once you know where you stand on planning, the fun part begins. We offer a range of styles to suit different homes and budgets, all available as made-to-measure conservatories tailored to your property:

Every style can be fitted with a glass roof, a solid tiled roof or a thermally efficient roof system, depending on how you plan to use the space. We also offer a range of double-glazed windows and door options to complete the build.

How We Help You From Start to Finish

At Secure Trade Frames, we do not just install conservatories and leave you to it. We guide you through every stage, from checking whether your project falls within permitted development to helping you choose the right conservatory style, roof options, and colour finish for your home.

As one of the most trusted local conservatory companies in Leicestershire, we take real pride in making the whole experience straightforward. Whether you are planning a bespoke conservatory from scratch or replacing an existing one, we handle the details so you do not have to.

Ready to Plan Your Dream Conservatory?

You do not need to find your way through planning rules alone. We are here to help you understand what applies to your home and to design a conservatory you will genuinely love using every day.

Your home deserves more than just four walls. Secure Trade Frames brings Leicester’s finest UPVC conservatories, windows and doors straight from their own factory floor to your doorstep, with the craftsmanship and personal service to match. Call 0116 261 1155, email info@securetradeframes.co.uk, or visit www.securetradeframes.co.uk. Find us at 29-33 Thurcaston Road, Leicester, LE4 5PG.