Conservatory Planning Permission Back to Blog

Conservatory Planning Permission

Conservatory Planning Permission

Building a conservatory is a fantastic way to create space within your home, make a connection to the outdoors and increase the value of your property. The trouble is, many homeowners are put off at the thought of having a conservatory built, out of confusion surrounding the rules.

In 2008, new regulations came into effect which give homeowners the right to build a conservatory under permitted development. This means that you do not need to seek planning permission. However, as with all permitted development, there are limitations to the types of conservatory that can be built – exceeding these limitations will require planning permission.


Building a conservatory under permitted development is subject to certain conditions. These are as follows:

  1. No more than half the area of land around the original house will be covered.
  2. A conservatory will not extend forward of the fronting highway.
  3. Conservatories must not be higher than the home’s roof and they can be a maximum of 4 metres high.
  4. Single storey rear conservatories must not extend beyond the rear wall of a house by more than three metres if an attached house or by four metres if a detached house.
  5. Two storey conservatories must not extend beyond the rear wall of the original house by more than three metres or be within seven metres of any boundary opposite the rear wall of the house.

There are other limitations that apply to conservatories which can be found at The Planning Portal.

Listed building conservatories

In almost all situations, you are likely to need listed building consent to build a conservatory onto a listed building. Listed building consent is granted by your council. We highly recommend that you consult with your Local Planning Authority to decide the best course of action. Remember that building a conservatory which affects the appearance or structure of a listed building is a criminal offence.

For more information on conservatory planning permission, please visit The Planning Portal.

The information contained within this article is strictly for guidance only.  Cost2Build recommends that you always check current sources of information in case regulations have changed. Cost2Build cannot accept any liability for miscommunication of the law in the case of a change in regulation or any action done to a property based on the information held in this article.

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