Alterations and erection of extension to rear of elevation

Environment Policy 35

Requires development in Conservation Areas to preserve or enhance character and protect special features. Officer assessed rear extension's negligible public visibility and similarity to existing structures, concluding it preserves the Area's character formed by front elevations, pitched roofs, and streetscape.

General Policy 2

Permits development respecting site/surroundings in siting, scale, form, design; not adversely affecting townscape character or resident amenity. Proposal tested for rear scale matching existing (4.3m projection, 2.9m height), no new amenity harm, and contained to non-public rear yard.

Planning Policy Statement 1/01 - Conservation of the Historic Environment of the Isle of Man

Impact on Conservation Area's special character is a material consideration. Officer noted limited views to rear, similar massing to existing, preserving streetscene character reliant on front elevations and roofscape.

Residential Design Guide - Overlooking resulting in a loss of privacy

Uses 20m guide for overlooking between habitable windows, relaxable in dense urban areas with existing mutual overlooking. First-floor window accepted given established overlooking in compact terraced rear and no topography changes amplifying harm.