Loft conversion with front and rear dormers

Appeal Decision Site visit made on 27 July 2026 by K E Down MA(Oxon) MSc MRTPI an Inspector appointed by the Secretary of State Decision date: 11 August 2026 Appeal Ref: 6011527 7 Greenlands Close, Newport Pagnell, Milton Keynes, MK16 8JJ • The appeal is made under section 78 of the Town and Country Planning Act 1990 (as amended) against a refusal to grant planning permission. • The appeal is made by Mr Stroi against the decision of Milton Keynes City Council. • The application Ref is PLN/2026/0380. • The development proposed is a loft conversion with front and rear dormers. Decision 1. The appeal is dismissed. Main Issue 2. There is one main issue which is the effect of the proposed loft conversion on the character and appearance of the host dwelling, the street scene and the surrounding area. Reasons 3. Greenlands Close is a small cul-de-sac of modest, semi-detached bungalows, and detached chalet bungalows which span the junction with Walnut Close. The latter is a larger and more architecturally varied cul-de-sac with similar bungalows and two storey dwellings. 4. The bungalows, including the appeal dwelling, have shallow pitched roofs. A number in both Greenlands Close and Walnut Close have large roof dormers which project noticeably above the ridge. Most of the dormers are on rear roof slopes although two modest examples in Walnut Close are on front roof slopes. Overall, the existing dormers, owing to their rear facing orientation and/or modest scale sit comfortably with the host dwellings, notwithstanding the projection above ridge height. 5. The chalet bungalows have original side dormers which is some cases have been enlarged. However, these all sit noticeably below ridge height. This and their side orientation ensures they do not appear overwhelming or out of place in the context of the host dwellings or the street scene. 6. The proposed loft conversion would incorporate both a front and rear dormer. These would extend about two thirds of the way down the front and rear roof slopes and would join above the main ridge to form a single flat roof over most of the bungalow. Overall, the development would significantly increase the scale and alter and detract from the design of the original roof of the dwelling. Appeal Decision Ref: 6011527 2 7. In particular, the noticeable projection above ridge height of both dormers and the resultant single flat roof would lead to an incongruous and unsympathetic boxy roof form. This would be exacerbated by the depth and hence height of the dormers which would increase the overall bulk of the structure, adding to the harmful effect of a discordant and top heavy overdevelopment. 8. The scale and poor design of the proposed loft conversion would also detract from the simple symmetry of the semi-detached pair and from the street scene of Greenlands Close which is characterised by, low-profile bungalows. 9. The appellant suggests that the proposed development would echo others in Greenlands Close and Walnut Close. However, I do not consider the existing dormers to be readily comparable with the proposed twin dormer and single flat roof form which would be alien and inharmonious in the street scene. 10. The appellant refers to development that could be undertaken under permitted development rights. However, any permitted dormer would be restricted to the rear roof slope and should not project above the ridge, thus limiting its effect. In terms of Class AA, referred to by the appellant, which allows an extra storey to be added, whilst this may be applicable, I have no evidence relating to any compliant scheme. In any case the restrictions and conditions that apply would ensure that any development allowed would have a compatible and acceptable appearance. I do not therefore find that a more harmful realistic fallback has been demonstrated. Neither can I agree with the appellant’s view that the development would not be visually dominant. 11. It is concluded on the main issue that the proposed loft conversion would have a materially detrimental effect on the character and appearance of the host dwelling, the street scene and the surrounding area. In consequence, it would conflict with Policies D1, D2 and D3 of the Plan: MK 2016-2031, adopted 2019. Taken together and amongst other things these expect new development to respond appropriately to its site and surrounding context, be of an exemplary standard of design and create a positive sense of place in terms of, amongst other things, massing and scale. In particular the scale and design of extensions should relate well to the existing building and not detract from its character or that of the surrounding area. 12. Third parties raise a number of other issues relating to parking provision, effect on residential amenity and loss of accessible housing. However, I agree with the Council that the development would not result in undue harm to these interests. Nevertheless, this would not alter or outweigh the identified harm to character and appearance. 13. For the reasons set out above and having regard to all other matters raised, I conclude that the appeal should be dismissed. K E Down INSPECTOR