Do You Need Planning Permission for a Conservatory?

Building a conservatory for your home is a great way to create space and light in your house, while at the same time establishing a connection with your outdoor space and increasing the value of your property. The problem is that many homeowners are bored with the idea of building a conservatory, often out of confusion about conservatory planning permission rules. Do you need planning permission for a conservatory? Just read on!

According to the law, to construct or modify the use of land or buildings in the UK, you must obtain planning permission.

The planning permission aims to consider the visual and aesthetic effects of the new building or expansion on the existing houses in the surrounding area.

It is often confused with building codes-its full details are outlined later in this guide.

Due to the “permission development rights” granted by the council, you can build certain types of structures without applying for planning permission. Some conservatorys and single-story extensions fall into this category.

At EYG, we always recommend that you check whether your conservatory requires planning permission before the construction process begins. We believe this will give you complete peace of mind before spending a penny.

Permitted development rights

Conservatory planning permission is not required if subject to the following restrictions and conditions:

(The permitted development allowance described here applies to houses, not apartments, duplex villas, or other buildings.)

* The conservatory cannot extend beyond the wall in the main facade of the original house. Guidance on what constitutes the main elevation is included in the household guide.

* The land area covered by the conservatory does not exceed half of the land area around the original house.

* The conservatory cannot be higher than the eaves of the existing house.

* If your conservatory is located within 2 meters of the boundary of your house, the height of the eaves of the conservatory cannot exceed 3 meters.

* It is not allowed to develop conservatory in mansions of protected buildings.

* The length and height of the conservatory shall not exceed 4 meters.

* For side conservatory, the width of your conservatory cannot exceed half the width of the original house.

* Side conservatory impose additional restrictions on the size of protected areas, national parks, natural beauty areas, or world heritage sites. They extend no more than 3 meters from the side elevation of the original residence and must be set back at least 1 meter from the main elevation of the original residence.

Do need conservatory planning permission if:

* The extension is located in front of the front or side of the “original house” facing the road

How big a conservatory can you build without conservatory planning permission?

The possible size of your conservatory depends on the size of the property you are expanding. To be built without planning permission, the area of the conservatory cannot exceed 50% of the area around the original house (including sheds and outbuildings).

If you want to avoid planning permission, there are also restrictions on how far you can build from the back and sides of the house:

* The height of the rear conservatory cannot exceed four meters, but if it is within two meters of the boundary, the height must be less than three meters.

* The conservatory built on the side cannot exceed 50% of the original house area.

In addition to planning permission, building regulations will apply to conservatory with a construction area of more than 30 square meters.

If the following situations occur, conservatory needs planning permission:

* The height of eaves and ridge is higher than existing houses (single-story and two-story)

The height of the eaves exceeds 3 meters, if it is within 2 meters of the boundary

If the following situations occur, the conservatory on the side needs planning permission:

* They are wider than half the width of the “original house”

The conservatory built in the rear needs planning permission if:

* They are more than 4 meters high

Do you need planning permission for a conservatory roof?

Do you need planning permission for a conservatory with a radiator ?

To ensure that your conservatory is classified as a conservatory and does not require building regulations, it must have a heating system independent of the house. This is defined by having a separate heating control in the conservatory, for example, an independent electric radiator.


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