A conservatory is usually considered to be permitted development, not requiring an application for planning permission, subject to set limits and conditions and most conservatories require approval under the building regulations.
The following elements normally have to satisfy the requirements of the regulations when building an extension:
If in doubt you should always consult your local planning authority.
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.
You can find detailed information about planning permission and building control in our common projects for conservatories pages or visit our interactive house and conservatories mini guide to find out about the limitations on size and placement of your planned conservatory.