28 October 2021 · Delegated - Principal Planner (Jason Singleton)
Tree Cassyn, Tromode Road, Douglas, Isle Of Man, IM2 5ej
The proposal involves erecting a pitched-roof single-storey rear extension to an existing single-storey detached dwelling on an elevated site in a predominantly residential area. The extension's design matches the main house, with no windows facing the neighbouring property to the west.
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The officer considered the main concerns to be the extension's impact on the design of the house itself, the character and appearance of the area, and the amenities of neighbours.
General Policy 2
GP2 permits development in accordance with land-use zoning if it respects the site and surroundings in terms of siting, layout, scale, form, design, does not adversely affect surrounding character, and does not harm neighbour amenities. The officer assessed the single-storey rear extension's design similarity to the main house, its lack of impact on neighbours via no overbearing, overshadowing or overlooking, and found it compliant.
Residential Design Guide 2019 - Dormer extensions
Provides guidance on rear extensions, focusing on neighbour amenity impacts like loss of light, overbearing, with limits such as single-storey projections not exceeding 3m. The officer noted the single-storey design and location avoids such impacts on the neighbouring property to the west.
Residential Design Guidance 5 (Architectural Details)
Addresses architectural details like windows and finishes to fit with the street scene and building. The extension's design was found similar to the main dwelling, ensuring it fits.
Residential Design Guidance 7 (Impact on Neighbouring Properties)
Considers impacts on neighbours including loss of light, overshadowing, overbearing, and overlooking. Assessed as having no such concerns due to single-storey height, positioning, and no facing windows.
Time limit
The development hereby approved shall be begun before the expiration of four years from the date of this decision notice. Reason: To comply with Article 26 of the Town and Country Planning (Development Procedure) Order 2019 and to avoid the accumulation of unimplemented planning approvals.
no highway interest in this application
Department of Infrastructure (DOI) Highways Division has no highways interest in the application.
Department of Infrastructure (DOI) Highways Division
No ObjectionNo Highways Interest; NHI on 14.09.2021
