Permitted Development

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Permitted development rights are a set of regulations in the UK that allow certain types of building work to be carried out without the need for planning permission. These rights are intended to make it easier for property owners to make small changes to their properties without having to go through the time and expense of applying for planning permission.

The types of work that are covered by permitted development rights can vary depending on the type of property and the nature of the work being carried out. In general, permitted development rights are more extensive for detached and semi-detached houses than for flats and other types of properties.

Permitted development rights can include things like:

Building small single-story rear extensions, up to a certain size

Building dormer windows in the roof

Installing or replacing windows and doors

Converting a loft or garage into living space

Erecting a porch

Installing solar panels or other energy-saving measures

It is important to note that even if a type of work is covered by permitted development rights, it may still need to comply with building regulations. Additionally, certain areas, such as conservation areas or national parks, may have stricter rules regarding permitted development rights.

If your proposed development falls within the permitted development criteria then it is advisable to apply for a Certificate of Lawfulness, the certificate proves to both the local council and future buys that the development was lawful and protects you if the planning policies change.

The application process is like that of a planning application, in that:

An application form

Evidence to support application

Architectural plans and elevations

A site location plan

A fee

So, what falls under permitted development?

If the development is to the side (not facing a highway) or rear of the house.

The development must not extend 3m beyond the rear wall of the existing development if an attached house or 4m if detached.

The materials used must be similar or match that of the existing property.

The development must be less that 50% the size of the land around the house

If the development is a side extension, it must be less than 50% the width of the existing house.

The development eves and ridge must be no taller than that of the existing house.

For anything outside of these criteria, a planning permission application will need be submitted.