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Official casework recordDismissedCurrent release

Appeal 3263235

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

8 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 single storey rear extension, two storey side extension including conversion of garage to habitable room and extension to porch to front.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. 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.

  3. Section 04

    [name]

    The main issues are: (i) the effect of the single storey rear extension on the living conditions of the current and future occupiers of the appeal dwelling, with regard to garden space. (ii) the effect of the two-storey side extension on the character and appearance of the area

  4. Section 05

    Living conditions

    The back garden of the dwelling is modest and consists of a smaller area of patio in comparison to the lawn. This backs onto the beer garden located to the rear of [address] on [address]. It is also enclosed to the sides and rear by fencing.

    The proposal includes the erection of a single storey rear extension with a flat roof. This would cover almost the entire rear elevation, with the plans indicating it would project 2.3m. Policy DMHD 1 and Policy DMHB 18 of the London Borough of Hillingdon Local Plan Part 2 Development Management Policies 2020 (The Local Plan Part 2) state that alterations and extensions to residential dwellings should retain adequate garden space. It is noted that this private amenity space provision would not meet the required [address] metres (minimum) for a four-bedroom dwelling and would therefore not comply with Policy DMHB 18 of The Local Plan. The proposal would result in very limited usable outside space for the current and future occupiers of the property. As the dwelling already has a very modest garden, as well as being enclosed on each side by either the house or relatively tall boundary treatments, the proposal would lead to a confined form of development. This would result in a poor environment in terms of the outside space available. Therefore, the proposal would cause harm to the living conditions of the current and future occupiers of the property.

    Even if a four-bedroom dwelling could be created through alterations and extensions that would not require express planning permission, this would take a different form than the proposals subject to this appeal. Therefore, I give this factor limited weight and it would not outweigh the harmful effects of the development.

    Considering the above, it is concluded that the proposal would result in harm to the living conditions of the current and future occupants of the appeal dwelling. This would therefore not accord with [name] 1 and DMHB 18 of the Local Plan Part 2. These policies seek to retain and provide adequate and good quality, useable outdoor amenity space.

  5. Section 06

    Character and appearance

    The appeal dwelling is one of four two-storey houses of a similar design, located within a residential setting. The detailed design and spacing of these four properties varies, with the appeal dwelling and the neighbouring house, number 2, being link-detached. A single storey garage separates these houses from numbers 4 and [address] together, with only a narrow access gap between them. Between 2A and 4, there is both the attached garage to 2A and a similar narrow access gap. The area is not comprised of uniform building styles, with terraced housing opposite the site. Therefore, the gaps between neighbouring properties varies significantly.

    The proposal consists of a two-storey side extension including conversion of garage to a habitable a room and extending to the rear wrapping around with the proposed single storey rear element. As the side extension is proposed to be set down from the main ridge as well as being set back from the front elevation, it would give the general appearance of being subservient to the host dwelling. Any terracing effect would not be dissimilar to that found in the immediate area.

    The proposal would not meet certain criteria of Policy DMHD 1 of the Local Plan Part 2, including relating to the degree of set in from the side boundary. However, this was considered as acceptable through the previous appeal decision which was considered under a similar policy context. When considered in its particular context, this element of the proposal would not be harmful to the character and appearance of the area or contrary to the aims of the development plan policies when they are considered as a whole.

    For the reasons above, the side extension would not result in harm to the character and appearance of the area. It would accord with Policy BE1 of the Hillingdon Local Plan: Part 1 - [name] (November 2012) and Policy DMHB 11 of the Local Plan Part 2. Together, these Policies seek to improve and maintain the quality of the built environment and to protect the character and appearance of the area. It would also accord with the overarching principles of Policy DMHD 1 of the Local Plan Part 2, which seeks to ensure that extensions to dwellings have no adverse cumulative impact on the character, appearance and quality of the area.

  6. Section 07

    Conclusion and Recommendation

    The lack of harm in respect of the effect of the development on the character and appearance of the area would not mitigate or outweigh the harm in respect of the first main issue.

    Based on the above, and having regard to all matters raised, I recommend that the appeal should be dismissed.

  7. Section 08

    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 859No official casework-database value to compare
    Extracted decision date · page 1
    20 July 2021Matches the official casework database

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3263235
Application reference
59942/APP/2020/2495
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
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
16 November 2020
Valid date
16 November 2020
Start date
18 March 2021
Planning authority decision date
1 October 2020
Appeal decision date
20 July 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
992
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