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Official casework recordDismissedCurrent release

Appeal 3313224

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

7 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 all new rear 6 metre flat roof extension, with a roof window, with demolition of the existing rear extensions.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Preliminary Matters

    [name] of the appeal form it is stated that the description of development has not changed but, nevertheless, a different wording has been entered from that on the application form. Neither of the main parties has provided written confirmation that a revised description of development has been agreed. Accordingly, I have used the description given on the original application.

  3. Section 04

    Background and Main Issue

    Under Article 3(1) and Schedule 2, Part 1, Class A of the GPDO, planning permission is granted for the enlargement of a dwellinghouse subject to limitations and conditions.

    Where an application is made for a determination as to whether prior approval is required for development which exceeds the limits in paragraph A.1(f) but is allowed by paragraph A.1(g) to Part 1, paragraph A.4(3) provides that the local planning authority may refuse the application where it considers that the proposed development does not comply with or, that the developer has provided insufficient information to enable the authority to establish whether the proposed development complies with the conditions, limitations or restrictions that are applicable to such permitted development.

    In this case, the Council contend that the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse and, would have a width greater than half the width of the original dwellinghouse. Consequently, the Council has determined that the development fails to comply with the limitations at A.1(j) of the GPDO and would not be permitted development. The main issue is, therefore, whether the proposal would be permitted development.

  4. Section 05

    Reasons

    There is no disagreement between the main parties that the proposed extension would be single storey and would not exceed 4m in height. There is also no disagreement that its width would be greater than half the width of the original dwellinghouse. However, the appellant submits that an existing outrigger wall, which would be demolished in the proposal and which the proposed extension would extend beyond, does not constitute a side wall of the original dwellinghouse.

    The host property, [site address] is a semi-detached bungalow located within a residential development of mainly traditionally designed properties. No 27 incorporates some distinctive design detailing, including front bay windows and a largely white coloured render finish to the external walls together with some brickwork banding. The property has a hipped roof outrigger, identified on the plans as containing a kitchen which has a tiled roof covering which matches that of the main roof of the property.

    The adjoining semi-detached property also contains an outrigger projection with a siting and of proportions reflective of that at the host property. On my site visit I noted that there are other properties which share some of the distinctive design features of the host property, including the same style of outrigger, the bay windows and the material finishes. This all indicates to me that the host property comprises one example of a particular housetype of which there are others within the residential estate. The outrigger is a part of that housetype.

    Given these observations, it appears to me that the outrigger is an original feature of the host property. Moreover, I have no substantive evidence before me which demonstrates otherwise. The permitted development limitations contained at A.1(j) are based on the original dwellinghouse and apply even if part of the original dwellinghouse is to be demolished, as would be the case here.

    Therefore, on the basis of all that is before me, I find that the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse and would have a width greater than half the width of the original dwellinghouse. I therefore conclude that the proposed development would not comply with the limitations contained at A.1(j) of the GPDO and would not amount to permitted development. Insufficient information has been supplied to enable me to come to the contrary view that it would comply with those limitations.

  5. Section 06

    Other Matters

    The appellant has drawn to my attention aspects of planning policy which they consider provide support for the proposed property enlargement whilst it is put to me that the proposal would be appropriate in design terms and result in no unacceptable harm to the living conditions of neighbouring occupiers. However, in this case these matters do not influence whether the proposal constitutes permitted development, the subject of the main issue above. This determination is a legal test and the matters drawn to my attention are not decisive.

    The appellant also refers to an application for a rear extension at neighbouring No 25 which, in December 2017, the Council determined did not require prior approval. The Council have stated that since that application was determined the interpretation of what constitutes a side wall has evolved over the passage of time. Regardless of the circumstances of the case at No 25, I must determine this proposal on its own merits and, against the provisions of the GPDO, the proposal would not amount to permitted development.

    No permitted development rights may have been removed from the property, nor may the site be located within a conservation area or be a listed building, but, again, this does not alter that the proposal would not amount to permitted development.

  6. Section 07

    Conclusion

    For the reasons given above, 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 3673No official casework-database value to compare
    Extracted decision date · page 1
    20 June 2023Matches the official casework database
    Extracted site visit dates
    25 April 2023 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3313224
Application reference
22/4355/pnh
Lead case reference
Not recorded
Planning authority
London Borough of Barnet
Planning authority code
E09000003

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
Unknown
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
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
15 December 2022
Valid date
15 December 2022
Start date
6 February 2023
Planning authority decision date
29 September 2022
Appeal decision date
20 June 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
34260
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