The local planning authority is of the opinion that the extension, due to its mono-pitched roof, the proportions of the front and side elevations in relation to the existing dwelling, the location and style of the window on the front elevation and the design of the forward projecting canopy roof over the garage doors, would generate an unbalanced appearance to this pair of semi-detached houses and compromise the integrity of the form and detail of the prominent front projecting gable on the house itself. This would combine to create an incongruous feature in the streetscene to the detriment of the visual amenities of the area. The development would therefore be contrary to Policy H/17 of the adopted Borough of Charnwood Local Plan, and to the advice given in the Borough Council's adopted Supplementary Planning Guidance on 'House Extensions'.