skip to Main Content
 discuss your project:  p 01243 37978307584 428403  make an enquiry »

Permitted Development Rights

What are permitted development rights? These are your rights to alter or extend your house without applying for planning permission. More information is available at

Generally, permitted development is not allowed in conservation areas, on listed buildings or on other designated areas such as national parks, Areas of Outstanding Natural Beauty etc.

We are familiar with the rules of permitted development and can advise you on whether planning permission is needed on your project.  We will also apply for a “Lawful Development Certificate” from the local authority on your behalf.  This provides peace of mind by confirming that your proposed development is lawful and is helpful when selling your house.

Please contact us for a discussion on the full rules and how they may benefit your project.

Extensions / Conservatories

UK Architect Development RightsFor example, you can extend your house as permitted development, providing that you do not:

  • Extend forward of the principle elevation or side elevation of a house fronting a highway;
  • Exceed 50% of the total area of land around the original house (including existing extensions and sheds and outbuilding must also be included);
  • Extend beyond the original house by more than 3m (or 4m if he house is detached) for a single storey extension;
  • Have a side extension which is greater than half the width of the house;
  • Etc.

Loft conversions

For example, you can convert your loft as permitted development, providing that you do not:

  • Exceed a volume of proposed roof space of 40m³(terraced house) 50m³ (semi-detached) – plus bear in mind any previous roof space additions must be included in this;
  • Go higher than the existing roofs ridge or project past the principle elevation that affronts the highway;
  • Include balconies, verandas or raised platforms
  • Etc.
Back To Top