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Official casework recordDismissedCurrent release

Appeal 3295770

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

Additional storey to existing dwellinghouse (maximum height increase 2.9 metres) (following planning permission PL/21/3241/ FA).

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Preliminary Matters

    I have used the description of development given in the appellant’s appeal statement which also matches that included on the Council’s decision notice. This is more succinct than that included on the application form.

    The Council’s decision notice states that prior approval is required but does not explicitly state that prior approval is refused. Looking at the notice as a whole, including the reason as set out, it is reasonable to read the notice as a refusal of prior approval.

  3. Section 04

    Main Issue

    The main issue is whether the proposed development would be granted planning permission by Article 3(1), Schedule 2, Part 1, Class AA of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended (the GPDO).

  4. Section 05

    Reasons

    The proposal is for an additional storey to the existing dwelling. The evidence before me indicates that planning permission was previously granted by the Council under reference PL/21/3241/FA for various extensions. During my site visit I noted that these appear to have been constructed. The existing dwelling includes two front extensions which have a lower height than the rest of the building. The proposed additional storey would be partly located above one of these front extensions.

    [name].1 sets out the instances where development will not be permitted under Class AA including where any additional storey is constructed other than on the principal part of the dwellinghouse (AA.1(i)). [name].4(1) provides interpretations in respect of terms used under Class AA. It states: ‘”principal part", in relation to a dwellinghouse, means the main part of the dwellinghouse excluding any front, side or rear extension of a lower height, whether this forms part of the original dwellinghouse or is a subsequent addition’.

    The interpretation is clear in defining the principal part of the dwelling as excluding a front extension of a lower height than the main part of the dwelling, regardless of whether or not it formed part of the original dwelling. Whilst it is likely that the front extension is part of the original dwelling, as indicated by the proliferation of similar and consistent building layouts in the surrounding area, within the interpretation of the GPDO this is not a consideration which determines the ‘principal part’ of the dwelling.

    Indeed, the exclusion outlined under the interpretation focuses on the position of any extension being to the front of the dwelling and of a lower height than the main part of the dwelling. In the case of the appeal property, the extension is to the front of the building and is lower than the main part of the dwelling. Within these terms, the principal part of the dwelling at [site address] excludes the existing front extension. Given that the proposal includes an additional storey partially above the existing front extension it would therefore exceed the limitation set out at [name].1(i). The proposal is not therefore permitted development.

    As a result, the proposed development does not constitute permitted development under Schedule 2, Part 1, Class AA of the GPDO. On that basis, there is no need for me to consider prior approval matters under [name].2(3), pertaining to ‘the external appearance of the dwellinghouse’.

  5. Section 06

    Conclusion

    For the reasons given above, I conclude that the appeal should 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 350No official casework-database value to compare
    Extracted decision date · page 1
    5 January 2023Matches the official casework database
    Extracted site visit dates
    4 January 2023 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3295770
Application reference
PL/21/4288/PAHAS
Lead case reference
Not recorded
Planning authority
Buckinghamshire Council - Chiltern Area *
Planning authority code
E07000005

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
3. Refused prior approval of permitted development rights
Appeal reason
Refusal
Type detail
Planning Appeals - Outline
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
72 m²
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
28 March 2022
Valid date
28 March 2022
Start date
3 May 2022
Planning authority decision date
14 January 2022
Appeal decision date
5 January 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
26018
First seen
20 August 2026 at 14:24
Last seen
20 August 2026 at 16:26
Removed from release
Not recorded
Record created
20 August 2026 at 14:24
Record updated
24 August 2026 at 16:21