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Official casework recordAllowedCurrent release

Appeal 6004321

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

9 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

part single-storey/part two-storey, side/rear extension and alterations to fenestration.

  1. Section 02

    Decision

    The appeal is allowed and planning permission is granted for part single-storey/part two-storey, side/rear extension and alterations to fenestration at [site address] , [site address] , Maidenhead, Windsor and Maidenhead [postcode] in accordance with the terms of the application, Ref 25/02586/FULL, subject to the following conditions:

    The development hereby permitted shall begin not later than three years from the date of this decision;

    The development hereby permitted shall be carried out in accordance with drawing numbers 0254-GA-0002 P02, 0254-GA-0003 P02, 0254-GA-0010 P01, 0254-GA-0011 P01, and 0254-GA-0012 P01;

    The external materials of the extension hereby permitted shall match those used in the existing dwelling; and

    No development shall take place above slab level until the details and locations of biodiversity enhancements, to include but not be limited to one bat or bird box installed integral to the building or on a mature tree, have been submitted to and approved in writing by the Local Planning Authority by way of relevant plans and elevations. The biodiversity enhancements shall be installed prior to the first occupation of the development hereby permitted and retained as such thereafter.

  2. Section 03

    Appeal Procedure

    The site visit was undertaken by a representative of the Inspector whose recommendation is set out below and to which the Inspector has had regard before deciding the appeal.

  3. Section 04

    Main Issue

    The main issue is whether the proposal would be inappropriate development in the Green Belt having regard to the National Planning Policy Framework (the Framework) and any relevant development plan policies.

  4. Section 05

    Reasons for the Recommendation

    The appeal site falls within land defined as Green Belt. The Framework establishes that development within the Green Belt should be regarded as inappropriate unless one of the specified exceptions applies. Policy QP5 of the Borough Local Plan 2013-2033 (2022) (the LP) is consistent in its overall approach with the Green Belt aims of the Framework. It is not disputed that the appeal site is previously developed land, and I find no reason to come to an alternate view. The exception at Framework Paragraph154 g) allows for limited infilling or the partial or complete redevelopment of previously developed land (including a material change of use to residential or mixed use including residential), whether redundant or in continuing use (excluding temporary buildings), which would not cause substantial harm to the openness of the Green Belt.

    There is no definition of partial redevelopment specified within the Framework or LP Policy QP5. Notwithstanding the scale and location of the proposal it would involve the demolition of the conservatory and new additions to the dwelling. Taken together, this would reasonably result in the partial redevelopment of the site. As a result, and in the absence of any pertinent evidence to suggest otherwise, the proposal falls within the scope of partial redevelopment of previously developed land for the purposes of the exception at Framework 154 g). The issue therefore turns on whether any harm to the openness of the Green Belt arising from the proposed development would be “substantial.”

    Openness is an essential characteristic of the Green Belt that is commonly taken to have both spatial and visual aspects. The proposal would introduce a three-dimensional form onto areas currently occupied by hardstanding, alongside the vertical extension of existing single‐storey elements. This would increase both the overall footprint and volume of the dwelling, resulting in more built form than currently exists at the site. In particular, the first-floor extensions would add bulk and massing eroding the sense of openness by extending built form upwards and outwards. Consequently, the proposal would have a greater physical presence within the Green Belt, reducing spatial openness.

    The appeal site, and the location of the proposal, is generally well enclosed by established vegetation and surrounding built form. Nevertheless, the proposal would be perceptible from the public realm, largely confined to short‐range, perpendicular views from [site address] . The overall increased bulk of built form would therefore be visible from these vantage points, and the proposal would inevitably lead to a loss of openness in a visual sense.

    Considering the modest scale of the proposal in relation to the existing dwelling, overall, the loss of openness would be localised, mitigated by the limited degree of public visibility, resulting in limited harm to openness.

    As such, I conclude that the proposal would be the partial redevelopment of previously developed land which would not cause substantial harm to the openness of the Green Belt. It would consequently comply with the exception set out in Framework paragraph 154 g) and would not be inappropriate development in the Green Belt. A case for special circumstances is not therefore required and it is not necessary to consider the other exceptions. There would be no conflict with Policy QP5 of the LP or the Green Belt aims of the Framework.

  5. Section 06

    Other Matters

    The appeal site is located within the setting of The Church of [name] the Less (the Church), a Grade II Listed Building. I am required by Section 66(1) of the Planning (Conservation Areas and [name]) Act 1990 to have special regard to the desirability of preserving the building or its setting or any features of special architectural or historic interest it possesses. Pertinent to this appeal, the Church’s special interest and significance is derived from its architectural, historic and community value. Given the location, extent and nature of the proposal in relation to the listed building, its setting would be preserved and the contribution it makes to the asset’s significance would not be harmed. I note the Council raised no concerns in this respect either.

  6. Section 07

    Conditions

    In addition to the standard time limit condition, I recommend a condition is imposed requiring that the development be carried out in accordance with the approved plans for certainty. In the interests of protecting character and appearance I recommend a condition securing matching materials. It is also recommended that in the interest of enhancing biodiversity, that a condition is imposed requiring the development to include the installation of a bird or bat box.

    The Framework states that permitted development rights should not be restricted unless there is clear justification to do so, and the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) includes conditions on the extent of development permitted by Class A including that any upper windows located in a wall or roof slope forming the side elevation shall be obscure glazed to provide privacy. That being the case, there is no clear justification for restricting the exercise of permitted development rights by existing or future occupiers, should they choose to do so. I recommend that it is therefore not necessary to impose a condition restricting the addition of west facing windows in the side elevation at first floor.

  7. Section 08

    Conclusion and Recommendation

    For the reasons given above, I recommend that the appeal should be allowed.

  8. Section 09

    Inspector’s Decision

    I have considered all the submitted evidence and my representative’s report and on that basis the appeal is allowed.

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 3895No official casework-database value to compare
    Extracted decision date · page 1
    23 June 2026Matches the official casework database
    Extracted site visit dates
    26 March 2026 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
6004321
Application reference
25/02586/FULL
Lead case reference
Not recorded
Planning authority
Royal Borough of Windsor and Maidenhead
Planning authority code
E06000040

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
Not recorded
Appeal reason
refused
Type detail
Householder
Jurisdiction
No Jurisdiction Associated
Link status
Not recorded

Site and development

Published appeal-site measurements and planning designations, without the withheld precise location fields.

Site area
0 hectares
Floor space
630 m²
Number of residences
Not recorded
Site in Green Belt
Yes
Agricultural holding
Not recorded
Affects setting of a listed building
Yes
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
Allowed
Decision category
Allowed
Received date
29 January 2026
Valid date
29 January 2026
Start date
5 February 2026
Planning authority decision date
27 November 2025
Appeal decision date
23 June 2026

Case administration

Published recovery, call-in, costs and enforcement information for this case.

Redetermined
Not recorded
Bespoke
Not recorded
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
Back Office
Dataset status
Current release
Catalogue record ID
90850
First seen
20 August 2026 at 14:25
Last seen
20 August 2026 at 16:29
Removed from release
Not recorded
Record created
20 August 2026 at 14:25
Record updated
24 August 2026 at 16:21