55 Clifden Road Worminghall Buckinghamshire HP18 9JR

1. 1.The proposed roof extension, including the introduction of front and rear gables, would result in a substantial increase in the bulk, scale and massing of the host dwelling. The development would erode the established single-storey character of the street scene, which is defined by modest bungalows with simple roof forms, and would appear overly dominant and incongruous within its context. As such, the proposal fails to respond positively to the site and its surroundings and would result in harm to the character and appearance of the area. The proposal is therefore contrary to Policy BE2 of the Vale of Aylesbury Local Plan, Policy RC1 of the Worminghall Neighbourhood Plan, the design principles set out within the Council's Design Guide: Residential Extensions, and the National Planning Policy Framework (2024), which requires development to be sympathetic to local character and maintain a high standard of design.
2. 2.The proposed roof extension, including the introduction of additional habitable accommodation, rooflights and a rear-facing Juliet balcony, would result in unacceptable overlooking and a significant loss of privacy to neighbouring properties. Given the close proximity and insufficient separation distances between properties, the development would create a harmful relationship between facing habitable rooms and private amenity spaces. The proposal therefore fails to safeguard the residential amenities of neighbouring occupiers. The development is therefore contrary to Policy BE3 of the Vale of Aylesbury Local Plan, the guidance contained within the Council's Design Guide: Residential Extensions, and the National Planning Policy Framework (2024), which seeks to secure a high standard of amenity for existing and future users.

From the council's decision notice.

Postcode

HP18 9JR

Application type

Full Application

Scale / size

Small

Parish

Worminghall

Date validated

2 January 2026

Consultation expiry

3 February 2026

Consultation start

13 January 2026

Consultation end

3 February 2026

Neighbour consultation start

2 January 2026

Neighbour consultation end

23 January 2026

Last date for comments

3 February 2026

Target decision date

27 February 2026

Statutory period

56 days

Documents

11