Appeal 3274308
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Official decision document
The decision, section by section
10 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
erection of a roof extension including a dormer window to allow conversion of loft area into an office/storage area above the garage.
Section 02
Decision
The appeal is dismissed.
Section 03
Appeal Procedure
The site visit was undertaken by an Appeal Planning Officer whose recommendation is set out below and to which the Inspector has had regard before deciding the appeal.
Section 04
Preliminary Matters
The Government published on 20 July 2021 a revised version of the National Planning Policy Framework. [name] have had regard to the revised national policy as a material consideration in my decision-making, planning decisions must still be made in accordance with the development plan unless material considerations indicate otherwise. In this instance, the issues most relevant to the appeal remain unaffected by the revisions to the Framework. I am therefore satisfied that there is no requirement to seek further submissions on the revised Framework, and that no party would be disadvantaged by such a course of action.
Section 05
Main Issue
The main issues in the appeal are: • The effect of the development on the character and appearance of the surrounding area; and • The effect of the development on the living conditions of the occupiers of neighbouring properties with regard to outlook.
Section 06
Character and Appearance
The garage, which takes up the full width of the property, is located to the rear of No. [site address] , fronting [address]. [site address] is part of a short terrace of two storey properties. The properties in the terrace feature a mix of ground floor commercial uses with residential accommodation above, with some properties wholly in residential use. To the north, east and west of the terrace are more modern three and four storey blocks of residential flats which reflect the wider character of [address].
The rear of the terrace properties feature narrow courtyard gardens and either side of the appeal garage there are two similar flat roof garage structures. The gardens and single storey garages provide a relative sense of openness in the context of the surrounding tall residential blocks. The addition of a pitched roof and dormer to the garage would significantly increase the height and massing resulting in a prominent and unacceptably large outbuilding, reducing the sense of openness at first floor level. Whilst the appellant asserts that the roof of the proposed development would only be partially visible from the street and set back from the site boundary, the set back is minimal and would not reduce the visibility of the bulky dormer. Due to the constrained width of the rear gardens and proximity to neighbouring dwellings and the host dwelling, the scale of development would result in an outbuilding with an incongruous appearance. The additional height would be out of keeping with the scale of the dwellings that form the terrace and other garage structures. The use of matching materials and similar sized openings in the proposal would not address the more fundamental issues of scale and design.
I therefore conclude that, for the above reasons, the proposed development would have a harmful effect on the character and appearance of the area and would be contrary to Policy CC1, CC2 and SC7 of the London Borough of Hounslow Local Plan (2015-2030) (the ‘Local Plan’) which seek, amongst other things to ensure development responds and maintains an areas character and complements the area through good design. Policy SC7 also seeks to ensure that over development does not occur in terms of mass and density.
At 4.85m in height, the proposed roof extension also conflicts with the guidelines set out in the London Borough of [name] Planning Document A Guide for Householders (adopted 20th December 2017) (the ‘SPD’), which sets out that the maximum height for outbuildings with a pitched roof is 4m. The SPD also seeks to ensure that where an outbuilding is located within one metre of the boundary of a property, as is the case with the proposal, steps should be made to reduce its height to minimise impact. I concur with the Council that the design of the proposal does not reflect this requirement.
Section 07
Living Conditions
The additional scale and height of the proposal would be considerably greater than the existing garage. Whilst the appellant states that there is separation from the extension to the neighbouring properties, it appears the existing garage is built up to the boundary with No. 251 and [address] and there is no set back proposed. The proposal would be higher than the existing garage, boundary wall and fencing and so these features would not provide screening. [name] am satisfied that no overlooking would occur, given the narrow width of the terrace properties and lack of any set back, the development would be imposing and the outlook from neighbouring properties would be dominated by the proposed roof extension.
[name] agree with the appellant that given the orientation of the garage it is unlikely to impede the amount of sunlight received by neighbouring properties, the scale and proximity of the development would have an oppressive impact, that would cause unacceptable harm to the outlook of the occupants of the neighbouring properties.
I note the appellants point that the proposal would increase privacy for the appeal property from the flats on [address]. However, given the relatively large separation distance from the appeal site to the flats, I do not consider overlooking to be a significant issue and this consideration does not lend any positive weight to the development.
I therefore conclude that the proposal would be harmful to the living conditions of the occupants of the neighbouring properties contrary to Policy SC7 of the Local Plan. Policy SC7 seeks to ensure development maintains the character of an area and the amenity of private spaces (including rear gardens) and minimise harm to neighbouring residents from loss of outlook or by creating an unacceptable sense of enclosure.
Section 08
Other Matters
In support of the appeal, the appellant has referred me to [address] and [address] as examples of similar developments. [name] have not been provided with any further details of these developments, they are located some distance from the appeal site and it is clear that these sites have different characteristics, for example the properties are more spacious. The circumstances are not directly comparable with those which apply in this appeal. I have not therefore attached any significant weight to them in support of the development.
The appellant’s wish to improve their living environment and better utilise the garden are understood and I note the occupants of the immediate neighbouring properties have not objected to the proposal. I also recognise that the proposed development would not impact vehicle access and parking, transport links, refuse and trees and would incorporate sustainable design features. However, these considerations do not outweigh the concerns which I have identified above.
Section 09
Conclusion and Recommendation
For the reasons given above and having had regard to all other matters raised, I recommend that the appeal should be dismissed.
Section 10
Inspector’s Decision
I have considered all the submitted evidence and the Appeal Planning Officer’s report and on that basis 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 376No official casework-database value to compare
- Extracted decision date · page 1
- 2 September 2021Matches the official casework database
- Extracted site visit dates
- 18 August 2021 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3274308
- Application reference
- 01054/249/P6
- Lead case reference
- Not recorded
- Planning authority
- London Borough of Hounslow
- Planning authority code
- E09000018
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
- 8 m²
- Number of residences
- 1
- Site in Green Belt
- No
- Agricultural holding
- No
- 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
- 4 May 2021
- Valid date
- 4 May 2021
- Start date
- 19 July 2021
- Planning authority decision date
- 12 February 2021
- Appeal decision date
- 2 September 2021
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
- 2606
- First seen
- 20 August 2026 at 14:24
- Last seen
- 20 August 2026 at 16:25
- Removed from release
- Not recorded
- Record created
- 20 August 2026 at 14:24
- Record updated
- 24 August 2026 at 16:21