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Official casework recordDismissedCurrent release

Appeal 3355242

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

the demolition of existing rear conservatory and construction of double storey side extensions, single storey side and rear extension, single storey front porch extension and renovation of existing property to alter materials.

  1. Section 02

    Decision

    The appeal is dismissed

  2. Section 03

    Procedural Matter

    The National Planning Policy Framework was revised in December 2024 but its contents do not alter the assessment of this appeal.

  3. Section 04

    [name]

    It is considered that the main issues are the effect of the proposed development on (a) the character and appearance of the surrounding area, in particular the streetscene, and (b) a protected species.

  4. Section 05

    Character and Appearance

    The appeal property is an altered 2-storey detached dwelling occupying a corner plot situated within a predominately residential area within which there are a mix of dwelling types and sizes. As identified by the appellant, there are variations in the design of the dwellings, their orientation to the roads and choice of external materials, including brick, render and boarding. Some of the dwellings have been altered with side extensions. There is no cohesive character or appearance associated with the design of the surrounding dwellings. However, the dwellings possess gable and hipped roofs and are set back a similar distance from the footways to the rear of front gardens. These gardens are variously landscaped and used for off-street parking.

    The proposed development includes the erection of what would appear to be 2-storey extensions either side of the host property when viewed from [address]. One extension would replace a detached garage and the second would be a first floor extension erected above existing single storey additions. At the rear a single storey extension would replace, in part, a conservatory. From the road, and taking into account the choice of external materials, the resulting property would have the appearance of a new dwelling and this appeal has been assessed on this basis.

    The scale and massing of the resulting property would be visually and physically larger than other dwellings fronting [address]. However, it would not appear a cramped form of development because the size of this corner plot is larger than the curtilages of the other dwellings. Although a porch is proposed, there would remain a similar relationship between the resulting property and the footway as other dwellings fronting [address]. The use of the front garden for parking would replicate the situation at other dwellings fronting the road. Overall, the rhythm and appearance of the streetscene along [address] would not be materially harmed by the appeal scheme.

    By reason of the design, the resulting property would have a double fronted appearance with a central element with a gable roof facing towards the road and the side extensions possessing hipped roof forms. The eaves of these extensions would face the road. Although there are examples of extended dwellings with a mix of gable and hipped roof forms, no double fronted dwellings were observed during the site visit. However, because of the property’s location on a corner plot and the variation in the design of the surrounding dwellings, the appeal scheme would not result in an incongruous form of development which would fail to respect the general character and appearance of this residential area.

    As already noted, there are a variety of external materials present within the surrounding area. The proposed cedar cladding, render and concrete tiles would be sympathetic to these other dwellings and, although sited on a corner plot, would not result in the extended property being a particularly conspicuous form of development which would fail to assimilate into the prevailing character and appearance of the streetscene along [address]. Further, by reason of its modest scale, the proposed crown roof element would not be a particularly noticeable feature when viewed from the adjacent roads. The overall height of the resulting property would be similar to the surrounding 2-storey dwellings.

    Accordingly, it is concluded that the proposed development would not cause unacceptable harm to the character and appearance of the surrounding area, in particular the streetscene, and, as such, it would not conflict with Policy QP3 of the Borough Local Plan 2013-2033 (LP) and Policy NP/DG2 of the Ascot, Sunninghill and Sunningdale Neighbourhood Plan. Amongst other matters, these policies require development to demonstrate that it would respect and not harm local character, including by reason of layout, rhythm, density, height, scale, bulk and materials.

  5. Section 06

    [name]

    As part of the appeal, a Preliminary Bat Roost Assessment has been submitted by the appellant which identifies that both the property and the surrounding area offer a value to bats. The Assessment also identifies that there is no firm evidence of bats being present at the property during the survey but there are potential opportunities for bat roosting to occur within its roof. Although it might be a low value opportunity, the Assessment recommends that an emergence survey should be undertaken to rule out or confirm bat activity. In the absence of any recommended emergence survey information about the presence or not of this protected species and any associated level of activity, it is not possible to ascertain the likely impact, if any, on bats.

    Having had regard to the duties under Regulations 9(1) and 9(3) of the Conservation of Habitats and Species Regulations 2017 (as amended) (the Regulations) and the three tests in Article 16(1) of the [name], there is no certainty that a licence would be issued by Natural England for the proposed development works which might affect bats. Therefore, and in the absence of being able to identify potential levels of bat activity and any necessary mitigation, it is not possible to be satisfied that the imposition of the condition suggested by the council would be appropriate in this case because there is no certainty that no adverse harm would be caused to a protected species.

    In the absence of the required evidence, it is concluded that the proposed development could cause unacceptable harm to a protected species and, as such, there would be a conflict with LP Policy NR2 which refers to protected species and their habitats being safeguarded from harm or loss.

  6. Section 07

    Conclusion

    Although the proposed development would not cause unacceptable harm to the character and appearance of the surrounding area, in particular the streetscene, this matter is demonstrably outweighed by the unacceptable harm which could be caused to a protected species. Accordingly, it is concluded that this 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 1351No official casework-database value to compare
    Extracted decision date · page 1
    10 February 2025Matches the official casework database
    Extracted site visit dates
    21 January 2025 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3355242
Application reference
24/01597
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
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
8 November 2024
Valid date
8 November 2024
Start date
26 November 2024
Planning authority decision date
10 September 2024
Appeal decision date
10 February 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
64327
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