Appeal 3292598
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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
described as a two storey side extension and part single/part two storey rear extension following demolition of existing element.
Section 02
Decision
The appeal is dismissed.
Section 03
Procedural Matters
It is noted that the Reasons for Refusal in the Council’s Decision Notice cited Saved Policy DG1 and HG14 of the Borough Local Plan (BLP). During the appeal process, the Royal Borough of Windsor and Maidenhead Local Plan 2013-2033 (LP) was adopted on 8 February 2022 which supersedes the policies of the BLP. The Council have suppled copies of [name] QP1 and QP3 which this decision is to be assessed against and have commented that this change in policy does not change any of the elements of the reasons for refusal1. That said, I have therefore made my decision on this basis and have only referred to the adopted policies of the LP in this decision.
Section 04
[name]
The main issues are the effect of the proposed development upon the existing building and the character and appearance of the locality.
Section 05
Reasons
The appeal site is located along [address], a residential road that is part of a larger estate of Ellington Park that appears to have been developed in the early to mid-twentieth century. [address] contains pairs of semi-detached dwellings with a functional design that have been laid out in a formal speculative housing development which maintains the same designs with two storey construction, hipped roof forms with large central coaxial chimney stacks. The dwellings along [address] have been laid out in a regimented fashion with the same setbacks from front and side boundaries and gaps in between dwellings enabling glimpses to the tops of trees behind. These details along with vegetated front gardens assists in creating positive elements which 1 Letter to the Planning Inspectorate from Royal Borough of Windsor and Maidenhead, Dated 1 March 2022 Appeal Decision: APP/T0355/W/21/3292598 reflect the qualities of character, appearance and local distinctiveness for this particular location. Whilst there is evidence of extensions and alterations seen throughout the estate, they are generally subservient to the main dwelling and retain the positive characteristics which contribute to local distinctiveness.
The appeal site is one of the original characteristic semi-detached dwellings constructed as part of the residential estate in a functional design. Unfortunately, the front garden has been removed for vehicular parking, but maintains its symmetrical appearance and regimented setbacks within the street scene. Whilst the existing side chimney stack has been removed, and a front porch erected, the extension is generally subservient to the original component of the dwelling.
In undertaking extensions to existing buildings, [name] QP1 and QP3 seeks that development fosters high quality design and a sense of place, with particular regard given to urban grain, layouts, rhythm, scale, bulk, and massing, amongst others. The Borough Wide Design Guide (BWDG) supports these policies and gives further specific guidance in relation to design principles and detailed considerations where for extensions there is an emphasis on subservience and responding to the existing site and context of the locality.
The proposed extension would elongate the existing ridge a further 1 metre an mimic the existing pitch with the two storey element not being setback from the front façade or the ridge. The extension would continue past the rear elevation and create a two storey wing to the rear with a lower hipped roof and ridge to the two storey rear wing that takes up the majority of the rear façade. The space remaining between the proposed rear wing and the shared boundary would then have a two storey infill extension with flat roof leading onto a lean-to roof of a single storey component.
Whilst the BWDG places an emphasis on subservience, the proposed side and rear extensions would wrap around the existing dwelling and subsume the building rather than be subservient to it. The lack of setback from the ridge and front façade would mean that the dwelling would mimic the same details as existing and the additional width would unbalance the pair of semi-detached dwellings and remove the important visual gap in between the properties which is seen as a positive characteristic in the street scene.
Turning to rear extension, the proposed infill component with flat roof does not maintain the same eave level, and the additional lean-to roof of the single storey alongside the hipped roof of the rear extension would overcomplicate the functional design and be like nothing else surrounding. I note reference in the [name] of Case that other dwellings surrounding such as No.[address] have similar wrap around extensions. Whilst no details as to the considerations of this scheme have been forwarded in the appeal for comparison, this dwelling appears to have only extended the ground floor leaving a visual gap at first floor as opposed to the appeal proposal which has a sheer two storey wall to the side without setback.
I acknowledge that there are two storey extensions to existing dwellings as illustrated in Appendix 1 of the appellant’s statement, however these are all to the sides of the dwellings and subservient in their form and appearance. Neither of the extensions shown are without the setbacks of the extension to the dwelling or overcomplicate and present a massing or visual bulk towards the dwelling’s design in a similar way to the proposal at the appeal site. As Appeal Decision: APP/T0355/W/21/3292598 such these examples to not add justification for the appropriateness of the appeal proposal. The rear wing is also hipped leading into a single storey lean-to roof that follows similar lines of the hipped roof. This is not the same as the appeal proposal which introduces different roof forms which has an overcomplicated appearance to the rear. Taking this into account, I am not persuaded that the approval at No.27 has similarities to the appeal scheme.
In conclusion of this matter, the proposed extensions would be clearly disproportionate and would be harmful to the character and appearance of the existing building, and the local distinctiveness of the locality. The proposed scheme would therefore be contrary to LP policies QP1 and QP3, which are supported by the BWDG as described previously.
Section 06
Other Matters
I note comments from an interested party with regards to loss of light, main drainage pipe accessibility, noise and disturbance during construction and highway safety. The council has assessed the scheme as being appropriate in terms of living conditions and highway safety and I have no reason or additional evidence which would result in me disagreeing with this assessment. Access to drainage is not a planning matter and construction noise if granted could adequately be controlled via conditions placed on the permission.
Section 07
Conclusion
For the reasons given above, I conclude that 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 decision date · page 1
- 21 June 2022Matches the official casework database
- Extracted site visit dates
- 24 May 2022 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3292598
- Application reference
- 21/03109
- 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
- 24 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
- 17 January 2022
- Valid date
- 17 January 2022
- Start date
- 23 February 2022
- Planning authority decision date
- 10 December 2021
- Appeal decision date
- 21 June 2022
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
- 16706
- 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