double glazed PVCu windows
Install Ecoseal A Rated, energy efficient double glazed PVCu windows and save on your heating bills
PVCu and composite doors
Add style and security with Ecoseal's wide range of double glazed PVCu and composite doors
PVCu conservatory or orangery
Add space and style to your home with an Ecoseal individually designed double glazed PVCu conservatory or orangery
Ecoseal's PVCu fascias
Ecoseal's PVCu fascias, soffits and gutter mean no more painting and decorating

Planning Permission and Building Regulations

Planning Permission

Adding a conservatory or orangery to your home is considered to be ‘permitted development’, that is, not needing an application for planning permission, subject to the conditions and limits summarised below: -
  • No more than 50% of the land around the ‘original house’* would be covered by new extensions.
  • No extension fronting a public highway.
  • No extension to be higher than the highest part of the roof of the house.
  • Single-storey rear conservatory must not extend beyond the rear wall of the ‘original house’* by more than three metres for a house attached to another, or by four metres for a detached house.
  • Maximum height of the single storey rear extension of four metres.
  • Maximum eaves height of an extension within two metres of a boundary, to be three metres.
  • Maximum eaves and ridge height of an extension to be no higher than the existing house.
  • Side extensions, not fronting a highway, to be single storey with maximum height of four metres and width no more than half that of the ‘original house’*.
  • Roof pitch of extensions higher than one storey to match existing house.
  • No verandahs, balconies or raised platforms.
  • On ‘designated land’, no permitted development for rear extensions of more than one storey, no cladding of the exterior and no side extensions.

*The term ‘original house’ means the house as it was first built or as it stood on 1st July 1948, if it was built prior to that date.  Extensions built by a previous owner are to be taken into account.

# ’Designated land’ includes national parks, the Norfolk Broads, Areas of Outstanding National Beauty, conservation areas and World Heritage Sites.

Additionally, where work is proposed on a listed building, listed building consent may be required.

Building Regulations

Building Regulations will normally apply if you want to build an extension to your home, though conservatories are normally exempt when: -
  • They are built at ground level and are less than 30 square metres of internal floor area.
  • The conservatory is partitioned from the rest of the house by external quality walls, doors or windows.
  • There should be an independent heating system with separate temperature and on / off controls
  • Glazing and any fixed electrical installations must comply with the applicable building regulations requirements.
  • Any new structural opening between the house and the proposed conservatory will require building regulations approval, even if the conservatory itself is exempt.
This information is for guidance only and you should check with your local planning authority or building control department for clarification regarding your particular situation and for any recent changes in regulations.


All new conservatories and orangeries from Ecoseal have their gutter and downpipes connected to either existing or new drainage, for example when a new gulley is installed along with the building work.  As a no cost option, in line with our ecological stance as a company, we offer every customer a FREE WATER BUTT connected to your new conservatory instead of a new gulley.  That way you will be able to collect rainwater from the roof of your new conservatory to re-use in your garden – just another way in which we are different from the ordinary conservatory company.

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