The proposed development by reason of its scale, in footprint and height, overall massing, bulk and design would detract from the character and form of the original dwelling and its setting within the locality. The varying topography of the site, combined with the proposed height of the development, would result in a building that would be elevated above the existing dwelling and as such would not be clearly subservient to the original dwelling. As such the development is deemed to be contrary to Strategic Policy C and Policy CO17 of the NYM Authority's Adopted Policies and the advice contained within Part 2, Sections 2 and 3.7 of the Authority's adopted Design Guide.