Dormer Window Extensions on offshoots

Planning Advisory Service (PAS)

Open group | Started - July 2012 | Last activity - This week

Former Member, modified 16 Years ago.

Dormer Window Extensions on offshoots

I have been investigating a case of alleged HMO, which involves the extension of the property by way of a box dormer extension on the original rear offshoot of a victorian terraced property. It has always been our view that dormers on offshoots do not require permission, if they do not intersect the main roof, as they do not front the highway. However, a complainant is arguing that as the GPDO states 'any part of the dwellinghouse would, as a result of the works, extend beyond the plain of ANY exisiting roofslope which fronts the highway', that it does require permission. Our legal team agree it does not need permission but cannot find any case law to this effect. Can anyone help?

Former Member, modified 16 Years ago.

Dormer Window Extensions on offshoots

Have a look at Waltham Forest L.B. 30/5/95 (DCS No.040-727-342) which concerned an extension of a hipped roof to form a gable fronting the side of a property. It was decided that it did not interfere with the plane of the existing front roof slope.

Former Member, modified 16 Years ago.

Dormer window extensions

Looking at the image of the dormer under construction, is not the rear alleyway that the rear outrigger overlooks a 'public highway' ?

Former Member, modified 16 Years ago.

Dormer window

In your initial thread you mention that the investigation relates to an alleged unauthorised HMO. If you can substantiate that the premises are indeed in use and occupied as an HMO then they cannot claim any benefit from dwellinghouse P.D. rights. You could then take action against the material change of use (if there is one) and also tackle the operational development element. Of course you should have full regard to the potential fall back position if the property was reverted back to a single dwellinghouse.