Conservatories

A conservatory is usually considered to be permitted development, not requiring an application for planning permission, subject to set limits and conditions. Most conservatories require approval under the building regulations.

The following elements normally have to satisfy the requirements of the regulations when building an extension:

• Doors and windows¹
• Drainage²
• Electrics³
• External walls⁴
• Internal walls⁵
• Roof⁶

If in doubt you should always consult your local planning authority.

You can find detailed information about planning permission and building control in our common projects for conservatories⁷ pages or visit our Conservatory Mini Guide⁸ to find out about the limitations on size and placement of your planned conservatory.

If your property is a semi-detached or terraced house, you will need to advise adjoining neighbours of your plans under the Party Wall Act 1996.

Read more about the Party Wall Act 1996⁹.

1. https://www.planningportal.co.uk/permission/common-projects/doors-and-windows/building-regulations
2. https://www.planningportal.co.uk/permission/common-projects/drains-and-sewers/building-regulations
3. https://www.planningportal.co.uk/permission/common-projects/electric-vehicle-charging/electric-vehicle-chargers
4. https://www.planningportal.co.uk/permission/common-projects/external-walls/building-regulations
5. https://www.planningportal.co.uk/permission/common-projects/internal-walls/what-building-regulations-apply-to-internal-walls
6. https://www.planningportal.co.uk/permission/common-projects/roof/building-regulations-work-to-an-existing-roof
7. https://www.planningportal.co.uk/permission/common-projects/conservatories/planning-permission
8. https://interactive.planningportal.co.uk/mini-guide-type/conservatory
9. https://www.planningportal.co.uk/permission/responsibilities/other-permissions-you-may-require/party-walls