Appeal 6006787
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
4 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
the erection of outbuilding to rear garden for use as an annexe.
Section 02
Decision
The appeal is dismissed.
Section 03
[name]
The main issues in this case are: i) the effect of the proposed building on the character and appearance of the appeal property and the surrounding area; ii), as a building capable of being an independent, self-contained residential unit, the effect it would have on the character and appearance of the area, and the amenity of neighbouring occupants/residents; and iii) whether it would provide acceptable living conditions for occupants.
Section 04
Reasons
The appeal site is a two-story semi-detached house, which has had a loft conversion with a rear dormer. The proposed annexe would be sited on the rear boundary of the garden. There is a three-story block of flats to the rear and a number of trees along the boundary of No.6 [name]. The surrounding area is predominantly residential. The location plan for the site shows a rear access running from [address] next to No.2, and along the back of the residential gardens ending at the rear of the appeal site. However, at my site visit I saw that this was gated and locked, and there was no means of access from the appeal site to this track.
There are a number of single-storey outbuildings in the rear gardens of houses in the vicinity, but nothing that represents a development on the scale as proposed in this appeal. In this situation, the proposed two-story building would have a substantial presence in the locality, with a large footprint. It would appear incongruous in the surroundings. The accommodation in the building would consist of a garden room and study on the ground floor with WC accommodation. On the first floor there would be a bedroom and bathroom/utility room. Whilst there is no kitchen facility shown on the drawing, it would be capable of providing such provision in the floor area that would be provided. It would be capable of independent occupation.
There would be a separation distance of some 17m with the host dwelling and a similar distance from Nos. 6 and 10. The use of the proposed building as an independent dwelling, having no separate private space, would be likely to lead to noise and general disturbance and a loss of privacy. The proposal would therefore have an adverse effect on the character and appearance of the garden side of the adjacent dwellings, and the living conditions of the occupants. The appellant’s appeal statement describes the proposal as a novel singular visual and physical presence. That would be true, and reinforces my conclusion on the effects of the proposal. There is no explanation of a private need for the annexe which could be considered against the public harm that would result from the proposed development.
For these reasons the proposed building would have an adverse effect on the character and appearance of the appeal property and the surrounding area, and the living conditions of neighbouring residents. It would also fail to provide acceptable living conditions for future occupiers due to lack of privacy and lack of private outdoor space.
It is necessary to consider whether a satisfactory permission could be given with the use of a planning condition, such as one requiring that the building only be occupied as ancillary accommodation to the host dwelling. However, this would be difficult to monitor and for that reason would not be a reasonable, and unlikely to avoid public harm.
For these reasons, the appeal will be 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 129No official casework-database value to compare
- Extracted decision date · page 1
- 28 May 2026Matches the official casework database
- Extracted site visit dates
- 12 May 2026 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 6006787
- Application reference
- 1782/APP/2025/2173
- 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
- Not recorded
- Appeal reason
- refused
- Type detail
- Householder
- Jurisdiction
- No Jurisdiction Associated
- Link status
- Not recorded
Site and development
Published appeal-site measurements and planning designations, without the withheld precise location fields.
- Site area
- 0 hectares
- Floor space
- 305 m²
- Number of residences
- Not recorded
- Site in Green Belt
- No
- Agricultural holding
- Not recorded
- Affects setting of a listed building
- Yes
- 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
- 20 March 2026
- Valid date
- 20 March 2026
- Start date
- 27 March 2026
- Planning authority decision date
- 6 January 2026
- Appeal decision date
- 28 May 2026
Case administration
Published recovery, call-in, costs and enforcement information for this case.
- Redetermined
- Not recorded
- Bespoke
- Not recorded
- Date recovered
- Not recorded
- Date not recovered or derecovered
- Not recorded
- Call-in date
- Not recorded
- Costs applied for
- No
- 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
- Back Office
- Dataset status
- Current release
- Catalogue record ID
- 89484
- First seen
- 20 August 2026 at 14:25
- Last seen
- 20 August 2026 at 16:29
- Removed from release
- Not recorded
- Record created
- 20 August 2026 at 14:25
- Record updated
- 24 August 2026 at 16:21