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Loft Conversions Planning Permission

When thinking about loft conversions planning permission is something that needs to be considered.

In the United Kingdom, most building alterations and conversions are covered by the planning laws. Before you can go ahead with a project you will accordingly have to secure permission from your local authority.

However, as far as loft conversions are concerned there is every chance you will not need to go down the planning route for the work to be started.

Since October 2008 they have been classed as a permitted development, hence planning permission will not have to be applied for – in most cases.

But while loft conversions ordinarily do not require planning permission, there are some circumstances when it will need to be obtained.

This will apply should you increase or alter the volume of your loft space in excess of certain limits. These statutory limits are 40 cubic metres for terraced houses,and 50 for semi-detached properties.

To avoid having to apply for planning permission any extension to your roof space must not extend beyond the existing slope of the roof at the front of the property.

Also any extension must not be higher than the height of the roof itself. And in order to escape the demands of the planning laws any work done must be with similar materials to those already used in the property.

However should you decide to include a veranda, balcony or raised platform as part of your loft conversion you will have to apply for planning permission.

In order for your loft conversion to remain a permitted development and avoid the application for planning permission, side windows must be obscure glazed with the openings 1.7m higher than the floor.

loft conversions planning permission

Roof extensions, apart from hip gable ones, must also be set back 200mm from the eaves. In designated areas, which include national parks, World Heritage sites and areas deemed as being of outstanding beauty, roof extensions will not be permitted.

Obviously before drawing up plans for the conversion it is obviously in your own interest to check with your local authority what is and what is not permitted in order for it to remain a “permitted development.”

It should also be understood that permitted development regulations for other buildings such as flats and maisonettes are different, and that this should betaken into consideration when considering loft conversions planning permission for your property.

For more info see the related pages below or complete the form at the bottom of the page for a free no obligation quote from tradesmen near you for your loft conversion project...

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