Appeal 3324578
Public case and site metadata stored from the official casework database, including fields that were empty in the source release.
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Official decision document
The decision, section by section
6 sections
Read the development description and the Inspector’s text from the official decision PDF in source order. Source headings are retained where available. Personal and contact details are removed by an automated privacy filter; this is source material, not Rules for You analysis.
Section 01
Development description
a first floor rear extension.
Section 02
Decision
The appeal is dismissed.
Section 03
[name]
The main issues are: • the effect of the proposed development on the character and appearance of the host dwelling and of the area; and • whether the proposal would create satisfactory living conditions for its future occupiers with regard to outdoor space.
Section 04
Character and appearance
The appeal site comprises a two-storey detached dwelling, which has been substantially extended to the rear. In addition, there is a large outbuilding located in the rear garden taking up a significant proportion of the plot.
The roofscape in the vicinity is varied and includes elements such as hipped roofs, cat slides and gables. The site lies on the corner of [address] and [address] and, as such, it occupies a prominent position with its side and rear elevations visible within the street scene of [address]. The back of the adjoining plots are also visible in this street scene and some dwellings have been enlarged with ground and first floor rear extensions.
The proposed development would be substantial in size, thereby failing to appear as a subservient addition to the host dwelling. Due to the extension’s significant width, the design of the hipped roof would create a disparity of angles with the pitch of the main roof. Consequently, the roof form would appear convoluted and fail to reflect the existing architectural detailing of the host dwelling.
The proposal would be prominent in views within [address]. Given its bulk and design, it would be markedly at odds with the less substantial amount of built form in the rear of neighbouring properties, including the first-floor rear extension at [address] (No 80). That extension is not as substantial in size as the proposal and, in addition, it maintains the roof slope of its host dwelling. For these reasons, the proposal would not be justified by the extension at No 80.
The proposal would not be detrimental to the living conditions of the adjoining neighbours. However, the lack of harm is a neutral consideration of this appeal.
In conclusion, the proposal would be harmful to the character and appearance of the host dwelling and of the area. The proposal would conflict with Policies DMHD1, DMHB11 and DMHB12 of the Local Plan Part 2 - Development Management Policies (DMP), Policy BE1 of the Local Plan Part 1 - [name] 2012 and Policies D4 and D8 of the London Plan 2021, where these policies support high quality design that integrates well with the surrounding area. The proposal would also be contrary to the National Planning Policy Framework, which promotes developments that are visually attractive and sympathetic to local character.
Section 05
Living conditions
The site retains some space to the rear which is laid to hardstanding and appears to be used for parking. Nevertheless, the space remains available and, as such, the increase in number of bedrooms would not reduce the standard of accommodation. In addition, the site is well located in relation to public amenity space.
On this basis, the proposal would create satisfactory living conditions for its future occupiers with regard to outdoor space. As such, it would not conflict with Policy DMHD1 of the DMP, which amongst other criteria, requires that adequate garden space is retained when dwellings are extended.
Section 06
Conclusion
Overall, I conclude that the proposal conflicts with the development plan as a whole and there are no material considerations of sufficient weight to indicate that a decision should be made otherwise than in accordance with it. Therefore, the appeal is dismissed.
Planning inspector and document dates
The official casework attribution is grouped under a one-way keyed hash and shown only by its local identifier. Decision-letter dates and page references are extracted by fixed first-page rules and checked against that authoritative record.
Appeal Decision
- Extracted inspector · page 1
- Inspector attribution ID 5985No official casework-database value to compare
- Extracted decision date · page 1
- 6 November 2023Matches the official casework database
- Extracted site visit dates
- 3 October 2023 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3324578
- Application reference
- 29767/APP/2023/435
- Lead case reference
- Not recorded
- Planning authority
- London Borough of Hillingdon
- Planning authority code
- E09000017
Casework details
The casework, procedure, development and linking details supplied by the official record.
- Casework type
- Householder (HAS)
- Procedure
- Written Representations
- Development type
- Householder developments
- Appeal type reason
- 1. Refused planning permission
- Appeal reason
- Refusal
- Type detail
- Planning Appeals - Full
- Jurisdiction
- Transferred
- Link status
- Not Linked
Site and development
Published appeal-site measurements and planning designations, without the withheld precise location fields.
- Site area
- Not recorded
- Floor space
- Not recorded
- Number of residences
- 0
- Site in Green Belt
- No
- Agricultural holding
- Not recorded
- Affects setting of a listed building
- Not recorded
- Historic building grant made
- Not recorded
- Relates to a conservation area
- Not recorded
- Flooding is an issue
- Not recorded
- Site within an AONB
- Not recorded
- Site within an SSSI
- Not recorded
Decision and dates
The published outcome and every imported case date.
- Official decision
- Dismissed
- Decision category
- Dismissed
- Received date
- 21 June 2023
- Valid date
- 19 July 2023
- Start date
- 21 August 2023
- Planning authority decision date
- 14 June 2023
- Appeal decision date
- 6 November 2023
Case administration
Published recovery, call-in, costs and enforcement information for this case.
- Redetermined
- No
- Bespoke
- No
- Date recovered
- Not recorded
- Date not recovered or derecovered
- Not recorded
- Call-in date
- Not recorded
- Costs applied for
- Not recorded
- Enforcement grounds count
- Not recorded
- Enforcement grounds
- Not recorded
Source and catalogue history
When this record appeared in the rolling official release and when the catalogue stored it.
- Source
- Planning Inspectorate casework database
- Source data system
- Horizon
- Dataset status
- Current release
- Catalogue record ID
- 41483
- First seen
- 20 August 2026 at 14:24
- Last seen
- 20 August 2026 at 16:27
- Removed from release
- Not recorded
- Record created
- 20 August 2026 at 14:24
- Record updated
- 24 August 2026 at 16:21