Permitted Development2018-09-10T13:39:31+00:00

Permitted Development

Under regulations that came into effect in 2008 an extension, or addition to your home, could be considered as a permitted development if it meets certain criteria. Permitted developments do not require an application for planning permission; however it depends on where you live. Conservation areas and listed buildings have different rules, but broadly speaking small extensions, loft conversions and conservatories can all be permitted developments.

We would however recommend that if you are extending under permitted development you apply for a certificate of lawfulness from the local planning authority to prove that it complies with the regulations. The typical cost of this certificate is £103, and when compared to a full application fee of £206, it is often worth applying for full permission, and can work out quicker in the long run if it is deemed not to comply with permitted development.

What are the restrictions?

  • All extensions and other buildings must not exceed 50% of the total area around the house as it stood on 1 July 1948, or the day it was built.
  • The extension is not forward of the principal elevation or on the side of the house that faces a highway.
  • On a detached house a single storey extension can be up to 4m, now 8m with neighbour consultation (see below) long and side extensions can only be a single storey.
  • On a terraced or semi-detached house a single storey extension can only be 3m, now 6m with neighbour consultation (see below) long.
  • Materials to be similar in appearance to the existing house – if you want to do something that doesn’t match the exterior of your house you will need to get the council’s permission.
  • Single storey extensions must not exceed 4m in height or have a maximum 3m eaves height if within 2m of a boundary.

What are the restrictions?

  • Two storey extensions can only be 3m from the building including ground floor.
  • Two-storey extensions no closer than seven metres to the rear boundary.
  • No verandas, balconies or raised platforms
  • Upper floor, side facing windows to be obscure-glazed any opening to be 1.7m above the floor
  • Roof mounted photovoltaic panels, or solar hot water panels as long as they do not protrude more than 200mm from the roof
  • Small porch to front max 3m2 minimum 2m from highway, max 3m high.
  • Alterations to driveways and patios using impermeable surfaces are not included and planning is require

What are the restrictions?

How has permitted development changed recently?

On the 30th May 2013 new rules on rear extensions, doubled the length allowable.  This extension to permitted development has been extended and now will remain in place until 30th May 2019.  This will mean:

  • on a detached house a single storey extension can be up to 8m long.
  • on a terraced or semi-detached house a single storey extension can be 6m long.

However, extensions that fall into this larger size are required to comply with a new neighbour consultation scheme which requires the following process:

  • Notify local planning authority of the proposal and provide a written description including the length that the extension extends beyond the rear wall of the original house, the height at the eaves and the height at the highest point of the extension, a site plan showing proposed development, the addresses of any adjoining properties and a contact address for the developer.

How has permitted development changed recently?

  • The planning authority will notify adjoining owners of the proposal, when the application was submitted, when the 42 day determination period will expire, how long they have to object to the proposal (a minimum of 21 days) and the date by which objections must be received.
  • If an adjoining neighbour raises an objection within the 21 day period the planning authority will take this into account and decide whether the impact on adjoining properties is acceptable.
  • If no objection is received within the 21 day period or if objections are received and the local authority decides that the effect on adjoining properties is acceptable, then the development can go ahead.
  • The local authority must inform the developer of their decision within the 42 day determination period.
  • If approval is refused, the developer can appeal the decision.

How has permitted development changed recently?

Will we need to notify our neighbours?

When a homeowner applies for planning permission the council sends out letters to neighbours asking if they have any objections. These are taken into account when a planning officer makes a decision, although the fact a neighbour has complained does not necessarily mean a scheme will be rejected.

This process doesn’t occur if you are building under the old smaller permitted development, but you will still

 Will we

need to notify your next-door neighbours if you are building near to your boundary. Once you start building, any neighbour who believes you are breaking the permitted development rules can contact the council, who will then send round an enforcement officer to inspect.

For more information on permitted development, please visit the Planning Portal or give us a call for an informal discussion on your project.

Loft Conversions

Most loft conversions are permitted developments, however you will require permission to add a dormer to the front of your house or raise the roof level in any way. You will also be restricted to creating space equal to 40 cubic metres in a terraced house and 50 cubic meters in a semi-detached property.