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Official casework recordDismissedCurrent release

Appeal 3360944

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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

single storey extension and fenestration alterations.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Procedural Matters

    I have utilised the Council’s description of the proposal as I find it describes the proposal more concisely.

    This appeal is accompanied by an application for costs which is the subject of a separate decision.

  3. Section 04

    [name]

    The main issue is the impact of the proposal upon the character and appearance of the host dwelling and the area.

  4. Section 05

    Reasons

    The appeal site is located off an access track off [site address] and whilst there are a number of converted barns within the vicinity the site stands within the open countryside. The barn is set within a substantial plot, which includes a garden area to the south and with an area of hardstanding is used for car parking. The appeal site, as a result of its location, is not visible from the road. The dwelling is single storey and has been previously extended1 to add a single storey pitched roof extension to the northern elevation of the barn and a pitched roof car port and an attached workshop. The extension was noted, by the previous Inspector, to be large in scale but was considered to be a subordinate extension that would not dominate the existing building (as a result of a lower eave and ridge height than the existing (original) barn. The Inspector also confirmed their observation that a number of other barns within the vicinity of the appeal site were also ‘L shaped’.

    The previous extension, to the north, has been constructed with both a lower eaves and ridge height. The ridge height of the current proposal would not exceed that of the original barn, but it does propose to match, for part, the ridge height of the 1 18/02166/APP (allowed via appeal APP/J0405/D/18/3217964) original section of the barn/host dwelling combined with the extension itself being in the region of 9.4m x 5.5m. I find that this would result in the proposal failing be a clearly subordinate extension to the host dwelling. The appellant sets out that the submitted proposed drawings show the roof line of the proposed extension is set lower than the existing roof, however, I find this not to be the case with part of the extension showing a proposed ridge height at the same height of the original barn with the exception of the proposed link roof element (stated to be in the region of 300mm lower). If the extension is ‘slightly lower’ than the ridge line, as stated by the appellant, then the difference between the existing and proposed ridge heights is negligible and thus insufficient to show clear subservience to the host dwelling.

    Whilst the footprint of the proposal would be smaller than the original footprint, I find that it is a relevant consideration that the host dwelling has already been the subject of a large extension to the north and that the current proposal would, therefore, result in cumulative extensions which I find would alter the form of the former agricultural building. The proposal may well equate to in the region of 42 sq./m compared to 162 sq./m of existing footprint, however, the existing footprint stated is noted to include the existing extension to the north. On this basis, I find the cumulative extensions, due the footprint of the proposal as submitted, would result in a sprawling dwelling at odds with the original appearance of the dwelling which was, originally, a more compact linear building.

    On approach to the barn, I find that the extension would result in a visually dominant feature compared to the existing dwelling where the existing, lower, extension is more discretely located, and subordinate, to the rear on the north elevation. The lower ridge height and subordinance was the reasoning behind the previous Inspector’s support for that proposal. Whilst the appellant contends that the proposal would moderate what they consider to be a brutal flank wall of the original barn, the flank wall is still part of the original dwelling and its character as a simple, utilitarian, structure. I do not find that the proposal would safeguard the host dwelling and that, cumulatively, the extensions would be significant in the context of the original barn/building.

    The Vale of [name] 2023 (the [name]) is noted in the context of the extracts provided within the appellant statement of case. Whilst the proposal may be consistent with some elements of this guidance, and I note the submissions confirm use of red brick to match existing and slate roof tiles which would be character appropriate for the dwelling, I find that the proposed height and footprint would also be combined with flush mounted triple rooflights, to both sides of the roof within the link, as well as extensive glazing within the link element and the corner of the proposed extension. Whilst more modern designs can, in some cases, work successfully in contrast to traditional barns I find that in this case the glazing and design would exacerbate the proposals bulk, scale and massing in the context of the host dwelling. The provision of a link type element, with the proposed rooflights (with there being no other roof lights in the existing building), would further add to the complexity of the proposal at roof level compared to the existing simple form.

    The appellant includes plans from application reference 95/00729/APP which is stated to the original permission for a dwelling in this location. I note the appellant’s comments regarding the original proposal being reconstruction and extension of the timber field barn into a domestic dwelling and not, therefore, a barn conversion as a result of the reconstruction works outlined above the included plans. Regardless or not as to whether the site is considered by the Council to be an old or historic vernacular barn, I find that, from the plans before me, 95/00729/APP was clear in its permission for a dwelling that was a single storey, linear, building akin to that which historically stood there as an animal field shelter and which was a rural building. The original dwelling was therefore granted permission for the resulting residential dwelling to be a simple, utilitarian, structure.

    Even if I did not consider the proposal to be an old or historic barn as stated by the appellant and considered the proposal against standard policies, relating to extensions to properties within the context of rural development in the countryside, the application of policies of that nature still generally that extensions be subordinate and appropriate to a host dwelling in basic terms. Furthermore, the appellant’s assertion that the proposal should not be considered as an old or historic vernacular barn appears to then be slightly at odds with the approach as to the inclusion of extracts from, and commentary as to consistency with, Historic England’s guide to adapting traditional farm buildings.

    Whilst the original form of the barn has already been altered the previous Inspector noted that a number of other barns within the vicinity of the appeal site were also ‘L shaped’ contributing to the acceptability of the initial extension. I note imagery included by the appellant within their statement of case (figure 1 and 2) showing plan form barns which are stated to be within five miles of the appeal site. Five miles is a large, even in a rural context, and I do not find that the proposal could be reasonably be appreciated within the general context of an area of this size. I find that the barns within the more immediate locality are those which the appeal site would be reasonably considered are, generally, ‘L shaped’ or ‘U shaped’.

    I have also no further evidence or information before me as to the background for the barns shown in figure 1 and 2 respectively of the appellant’s statement of case in terms of their original form and/whether these have, for example, evolved by extension(s) akin to the proposals within this appeal. Even if I had found that a ‘Z shaped’ footprint in its basic form/in principle was generally acceptable, in terms of character and appearance of the area, this is an entirely separate matter to the impact I have identified in terms of a lack of subordinance to the host dwelling itself due to the scale of the proposal as currently submitted.

    The fact that proposal is not visible from the street scene is acknowledged but character, and appearance, are separate matters within character being the intrinsic qualities that make an area. In this case whilst there may limited visual impact within the open countryside, but a lack of visibility is separate to character and, in turn, the character and appearance of the host dwelling itself. Overall, I appreciate and acknowledge the appellant’s reasoning for the proposal in terms of creating a better entrance to the property and functional space, however, for the reasons outlined above I do not find that the proposal would be subordinate in scale in a manner which relates to the massing and character of the original barn.

    The proposal would be contrary to Vale of Aylesbury Local Plan 2021 (LP) Policy C1 which outlines that any extension should be modest in scale and subordinate to the main building and LP Policy BE2 which requires that proposals respect and complement the physical characteristics of the site including the scale and local distinctiveness and vernacular character in terms of proportions. The proposal would also be contrary to the [name] in terms of the guidance outlining that the original building should remain the dominant element of the property whether you have one extension or several. It goes on to advise that the effect of any extension should not overwhelm the house from any given viewpoint as well as that once an extension begins to exceed or match the size of the original building then the architectural integrity of the original structure tends to become lost.

    The proposal would also be contrary to National Planning Policy Framework 2024 Which requires that developments be sympathetic to the surrounding built environment and the National Design Guide 2021 in so far as it requires that development responds positively to the features of the site itself including the existing built development including layout, form and scale.

  5. Section 06

    Other Matters

    I note that comment has been made, by both parties, in relation to trees on site however this did not firm a refusal reason and, had the appeal been acceptable in all other regards, such matters could have been dealt with via condition alongside any landscaping proposals.

    Reference is made to an approved application (24/02866/APP) stated to be for a two-storey extension to an existing barn with extracts from the Council’s delegated report quoted. Whilst consistency is key to maintaining confidence within the planning system each case should be considered on its own merits. Based upon the limited information before me (a floor plan) I am unable to attribute weight to the decision at the appeal site. I have no information as to, for example, site context or elevational drawings or information relating to the original dwelling in order to fully understand the reasoning for the decision made.

  6. Section 07

    Conclusion

    For the reasons outlined above, and taking into account all other matters raised, 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 6324No official casework-database value to compare
    Extracted decision date · page 1
    22 May 2025Matches the official casework database
    Extracted site visit dates
    8 May 2025 (page 1)
  • Costs Decision

    Extracted inspector · page 1
    Inspector attribution ID 6324No official casework-database value to compare
    Extracted decision date · page 1
    22 May 2025Matches the official casework database
    Extracted site visit dates
    8 May 2025 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3360944
Application reference
24/03423/APP
Lead case reference
Not recorded
Planning authority
Buckinghamshire Council - Aylesbury Area *
Planning authority code
E07000004

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
45 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
19 February 2025
Valid date
19 February 2025
Start date
3 March 2025
Planning authority decision date
20 December 2024
Appeal decision date
22 May 2025

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
69884
First seen
20 August 2026 at 14:25
Last seen
20 August 2026 at 16:28
Removed from release
Not recorded
Record created
20 August 2026 at 14:25
Record updated
24 August 2026 at 16:21