DC Casebook: Householder development - Permission required for changes to roof

The owners of a house in south-west London have been refused a lawful development certificate for proposed changes to the roof to facilitate a loft conversion.

The appellants claimed that the works fell within either class B or class C of part 1, schedule 2 of the General Permitted Development Order 1995 as amended. Since the terms "additions" and "alterations" in those classes are not defined, they maintained that it was a matter of fact and degree whether the extent of the works fell in either class. Since a substantial part of the existing roof would be retained, they claimed that a rear dormer would not require specific permission.

The inspector agreed that the two terms are not defined in the order, so whether particular works constitute alterations is a matter of fact and degree. The courts have held that a similar approach should be followed in assessing whether works involve an addition to a roof rather than a complete replacement, he noted.

The property had a double-hipped roof that would have its ridge lowered to comprise a single gable. A dormer would be inserted into the slope. While it might be possible to reuse timbers and other materials, the inspector considered that the changes involved a complete demolition and rebuilding of the roof. On this basis, he held that the works could not fall in class B or C.

DCS Number 100-069-244

Inspector Colin Thompson; Written representations


Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Join the conversation with PlanningResource on social media

Follow Us:
Planning Jobs