Please note, we do not offer advice unless during projects and all information below is correct at the date of publishing.

Many people are confused by planning permission and building regulations, especially when it comes to getting planning permission for your conservatory or orangery

Planning permission is concerned with the visual impact and size of the structure and not the technical integrity, whereas building regulations cover all aspects of construction and are constantly reviewed. Make sure your contractor or designer is aware of the latest regulations and purchase only through a trusted supplier.

Adding a small domestic conservatory or orangery to your house is considered to be a permitted development. You won’t need to apply for planning permission or comply to building regulations provided you meet the criteria listed below.

When do you need planning permission?

  • If the house is in a conservation area, national park or designated Area of Outstanding Natural Beauty.
  • The conservatory is not at ground level.
  • The house has already been extended.
  • It is a terraced house.
  • The volume of the house will be increased by more than 15 per cent or 70 cubic metres, whichever is the greater.

When is a conservatory or orangery exempt from building regulations?

  • Built on to a domestic dwelling and divided from the rest of the house by a door that complies with the requirements for an exterior door.
  • Under 30msq in floor area.
  • A single storey.
  • Built at ground floor level.
  • Glazed in compliance with safety glazing requirements of approved Document N of the Building Regulations and BS6262 Part 4 1994.
  • Not within 1m of the boundary.
  • Fitted with a roof that is 75% glazed and with walls that are 50% glazed.

For more information about planning permission for your conservatory or orangery visit the UK Government’s online planning and building regulations resource for England and Wales.