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The rules and regulations.

Do You Need Planning Permission for a Conservatory?

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If you’re intending to purchase a conservatory, then you’re probably wondering about all the rules and regulations you need to be aware of.

And the biggest question that you’ll be asking yourself is:

Do I need planning permission for my conservatory?
The vast majority of the time, and subject to certain criteria, you will not need to obtain planning permission in order to build a DIY conservatory. This is because they are considered to be ‘permitted development’. However, you should always check this with your local authority.

However, this is only the case when the following conservatory planning permission conditions are met:

    1. Conservatories do not extend beyond the side wall of the house.
    2. Conservatories must not take up more than 50% of the land area around the ‘original house’.*
    3. Conservatories cannot be higher than the original roof of the home.
    4. No conservatory can be forward of the principal elevation or side elevation fronting a highway.
    5. A single-storey rear extension cannot exceed four metres in height.
    6. A single-storey rear extension cannot exceed three metres in depth, for an attached house, and four metres in depth for a detached house.
    7. The maximum depth of a rear extension (more than one storey) is three metres – including the ground floor.
  1. Side extensions must be single storey – and cannot exceed four metres in height, or a width of more than half of the ‘original house’.
  2. The eaves and ridge height of a conservatory cannot be higher than the house.
  3. The eaves within two metres of the boundary cannot exceed three metres.
  4. An extension cannot include balconies, raised platforms or verandas.
  5. A roof pitch on conservatories higher than one storey must match exiting house.

*The original house is the state of the house when it was first built, or exactly how it stood on July 1st 1948.

Most of the time, meeting these requirements will be simple.


Here at Conservatory Land, we’ll manufacture a DIY conservatory that is the perfect size for you. We will take all building restrictions into account when doing this.

If you’d like to learn more, don’t hesitate to contact us on 0800 952 8000 or get a free conservatory brochureWe are always happy to help in any way we can.

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