The proposed rear extension to the dwelling, when taken with the existing side extension, would cumulatively result in a significant increase in the habitable floor space of the original dwelling, in excess of the 30% threshold set out under Policy CO17 of the North York Moors Local Plan. The proposal would further extend what is a modestly sized three bedroom cottage significantly beyond its original size and would consequently have a detrimental impact on the mix of dwelling types needed to sustain balanced communities within the National Park and result in the loss of a smaller more affordable dwelling.
It is considered that the proposed rear extension would by virtue of its scale, height, form, position and design detract from the very linear form of the host property and dominate the rear elevation of the property, which acts as the principal entrance. Furthermore the choice of materials takes no reference from those of the host property such that the extension would appear very much as a separate, unrelated structure, exacerbating its prominence on and dominance of the rear elevation. As such it is considered that it would have a detrimental impact on the character and form of the orignal dwellig and its setting in the landscape contrary to Strategic Policy C and Policy CO17 of the North York Moors Local Plan.