Hillview, Chapel Lane, Box, Corsham, SN13 8NU

1. 1.By reason of its scale, height, form, and inclusion of features such as an external staircase and flat roof, the proposal will result in a poorly integrated and visually awkward addition to the existing building. The extension would be partly visible from public areas within the locality and along Chapel Lane, introducing an urbanising element that is at odds with the modest and organic pattern of development in the area. The proposal would also fail to conserve or enhance the special qualities of the Cotswolds National Landscape. Accordingly, the development is therefore contrary to Core Policies 51 and 57 of the Wiltshire Core Strategy (2015), Appendix D of the Wiltshire Design Guide SPD, and paragraphs 131 and 135 of the National Planning Policy Framework, which collectively seek to ensure high-quality design that respects local character and protects designated landscapes.
2. 2.The proposed development would have a significant overbearing impact on the attached neighbouring property, Hillside, adversely affecting the enjoyment of its rear garden and habitable rooms. As such, the proposal is contrary to Core Policy 57(vii) of the Wiltshire Core Strategy (2015) and paragraph 135 of the National Planning Policy Framework, which seek to ensure a high standard of amenity for existing and future users.

From the council's decision notice.

Postcode

SN13 8NU

Application type

Householder planning permission

Scale / size

Small

Parish

Box CP

Date validated

17 November 2025

Consultation expiry

17 December 2025

Consultation end

17 December 2025

Target decision date

12 January 2026

Statutory period

56 days

Documents

9