Appeal 6008200

The appeal is dismissed.

The main issue is the effect of the development on the character and appearance of the host dwelling and the surrounding area.

The appeal property forms part of a cul-de-sac characterised by modest semi-detached bungalows of similar scale and form. The street scene is predominantly typified by simple, low-profile roofscapes with consistent ridge heights and a generally uniform appearance. Whilst there are some examples of alterations within the street, these are limited in number and do not undermine the prevailing character. Overall, the consistency of roof form and proportion remains a key and readily appreciable characteristic of the area.

The proposal would introduce substantial flat-roofed dormers across both the front and rear roof slopes. Taken together, these would create a near continuous built form extending from the front to the rear of the roof, projecting marginally above the existing ridge. By reason of their combined scale, width and depth, the dormers would be perceived as a dominant alteration to the roof rather than a subservient addition. They would fundamentally alter the simple roof form of the host dwelling, introducing a bulky and visually intrusive element that would erode the established rhythm of the street scene.

I have had regard to the specific examples of roof alterations referred to by the appellant, including those within [address]. Whilst these demonstrate that some variation exists, they are few in number and differ in their form and extent. They do not collectively create a consistent or prevailing pattern of development comparable to the appeal proposal, nor do they alter the predominantly uniform character identified above. In this respect, the [address] Extensions and Alterations Supplementary Planning Document 2012 (SPD) makes clear that isolated or poor-quality examples should not be relied upon as precedents unless they have become characteristic of the area, which is not the case here.

The proposal would also involve a modest increase in ridge height relative to the adjoining semi-detached dwelling. This would disrupt the symmetry and visual balance of the pair, which presently reads as a coherent composition. The resulting form would appear incongruous and would further exacerbate the identified harm. This conflicts with the guidance of the SPD, which seeks to ensure that dormers remain subservient and that alterations do not result in an unbalanced form, particularly within semi-detached pairs.

The semi-detached pair occupies a corner plot, which increases the prominence of its roof slopes within the street scene. As such, the development would be readily visible from multiple vantage points, thereby amplifying its visual impact and the degree of harm to the character and appearance of the host dwelling and surrounding area.

I therefore conclude that the scale, form and combined extent of the proposed dormers would result in an over-dominant and unsympathetic form of development that would harm the character and appearance of both the host dwelling and the surrounding area. The proposal would conflict with Policies D1 and D11 of the City of York Local Plan (2025) and Policy H4 of the Huntington Neighbourhood Plan (2021), which, taken together, seek to ensure that development responds positively to its context and respects local character in terms of scale, massing and height.

The proposal would provide improved internal accommodation, including additional bedrooms. Whilst this attracts some limited weight, it is a private benefit that does not outweigh the identified harm.

I have also considered the suggestion that the adjoining property could be altered in a similar manner in the future, potentially restoring symmetry. However, this is a speculative scenario to which I attach no weight.

For the reasons given, the proposal conflicts with the development plan taken as a whole and there are no material considerations which indicate that the appeal should be determined otherwise. Accordingly, the appeal should be dismissed.