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Official casework recordDismissedCurrent release

Appeal 3346374

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

the erection of a single storey rear extension following the demolition of the existing conservatory. Conversion of the existing garage into a habitable space with a front extension and replacement of garage door with window.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Main Issue

    The main issue is the effect of the proposal on the character and appearance of the host property and the locality.

  3. Section 04

    Character and appearance

    The appeal property is a three-storey semi-detached home set a little back and off to the side of the end of a cul de sac. The locality is one of established residential character and the arrangement of 1990’s Palladian style villas results in an area of very pleasing appearance. The proposal is as described above.

    The site lies within the [address] Conservation Area (CA). There is a duty imposed by Section 72(1) of the Planning (Listed Buildings and Conservation Areas) Act 1990 requiring decision makers to have special regard to the desirability of preserving or enhancing the character or appearance of a Conservation Area. The Council’s Local Plan (LP) Policy CC4 and the London Plan’s (LoP) Policy (HC1) reflect this. [name] CC1 and CC2 and LoP Policy D4 are also all relevant to the case. Taken together and amongst other matters they seek to secure development which would display good quality design, complement the original building and its context and reflect local distinctiveness.

    The Council’s concerns rest with the proposed front extension and replacement of garage door with a window. It concludes that through design, position and appearance there would be aesthetic harm the appeal property, the pair of semi-detached houses and the wider scene. The Council considers that the plans would not reflect the locality and would be harmful to the CA. The Appellant puts the case that there would be no immediate or wider harm, respectful design is proposed, the development would be subordinate, and looking more widely would have very limited visibility in this grouping at the end of the cul de sac.

    For my part I find the frontage symmetry of dwellings, and of pairs in particular, to be so important to the qualities and characteristics of this area of the neighbourhood that I would be unable to condone change as proposed. The appeal scheme, notwithstanding some subtlety, would unbalance the pair and this would be seen more widely. The proposal would be jarring on the eye and would very obviously be an unfortunate post original development alteration not for the greater visual good.

    Given the foregoing I conclude that the change proposed would be contrary to the aims of Section 72(1) and would conflict with the development plan polices which I cite in paragraph 4 above.

  4. Section 05

    Other matters

    I do understand the Appellant’s wish for improved accommodation. I would agree that the scheme would not directly detract from residential amenity for neighbours. I can see that thought has been given to the use of matching materials and window style.

    An appeal decision (APP/F5540/D/17/3180814) at no. 15 was drawn to my attention. This removed a garage door but the difference there was it is a mid-terrace home and the Inspector found that the planned change would introduce more symmetry. The two other examples drawn to my attention are also not comparable in that garage doors remained albeit they were changed in form. In any event I must determine this case on its own merits and my reasoning is set out above.

    I have carefully considered all the points raised by the Appellant but these matters do not outweigh the concerns which I have in relation to the main issue identified above.

    I confirm that policies in the National Planning Policy Framework (the Framework) have been considered. Key objectives of the Framework are to protect and enhance the qualities of the built environment as well as to safeguard heritage assets; development plan policies which I cite mirror these. The Framework underlines that great weight should be given to a heritage asset’s conservation. The appeal proposal would lead to less than substantial harm to the significance of the designated heritage asset however what public benefits there would be would not outweigh this harm. Furthermore, there are no other benefits, including to the Appellant, which to my mind would be of a scale to outweigh the harm to the Conservation Area which I have identified. 2

  5. Section 06

    Overall conclusion

    For the reasons given above I conclude that the appeal proposal would have unacceptable adverse effects on the character and appearance of the host property and the locality. Accordingly, 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 352No official casework-database value to compare
    Extracted decision date · page 1
    7 November 2024Matches the official casework database
    Extracted site visit dates
    26 October 2024 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3346374
Application reference
01615/10/P3
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
Not recorded
Number of residences
0
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
No
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
14 June 2024
Valid date
19 June 2024
Start date
8 July 2024
Planning authority decision date
22 March 2024
Appeal decision date
7 November 2024

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
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
Horizon
Dataset status
Current release
Catalogue record ID
59658
First seen
20 August 2026 at 14:24
Last seen
20 August 2026 at 16:28
Removed from release
Not recorded
Record created
20 August 2026 at 14:24
Record updated
24 August 2026 at 16:21