Appeal 3374551
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
demolition of the existing rear conservatory and the erection of a single storey rear and side extension with roof lights. First floor side and rear extension above existing garage with rooflights.
Section 02
Decision
The appeal is dismissed.
Section 03
Procedural Matters
I have utilised the Council’s description of the proposal as I find it describes the proposal more concisely.
Section 04
Main Issue
The main issue is the impact of the first-floor side extension on the character and appearance of the existing building and the visual amenity of the street scene and surrounding area.
Section 05
Reasons
The appeal site is a two-storey detached dwelling with an attached garage which is located within a residential area. The dwellings along [address] are characterised as two storey with a clipped gable roof design with the appeal site being representative of, and in-keeping with, the dwellings found within the immediate locality and within which the proposals would be generally viewed. The dwellings share architectural and general design features which, overall, results in visual continuity and a consistent character and appearance. The attached single storey garage is also a notable feature of dwellings on [address].
The proposed roof of the first-floor side extension, above the existing garage, would have a lean-to appearance which would result in the overall height of the extension being below the eave of the host dwelling. This, alone, would not result in the proposal being sufficiently subservient (or appropriate) as the overall design would be completely at odds and out of keeping with the character of the street scene and the surrounding area. The proposal would result in a proposed first floor side extension which would be entirely uncharacteristic for the host dwelling and the visual amenity of the street scene and surrounding area as a result of a bulky and unsympathetic addition to the host dwelling.
The additional storey above the existing garage would be out of character with the style of garaging which is characteristic within [address] and would result in competing and unsuitable design aspects which would look visually awkward as a result of the lean-to style/design and, in particular the proposal’s interaction with the first-floor window and roof. Furthermore, the lack of fenestration, at ground floor level, would lead to a large brick wall in the context of the street scene at ground floor level in the front elevation which I find would exacerbate the inappropriate visual bulk, scale and massing of the proposal to the side of the host dwelling in views along [address].
I note that the appellant outlines that the proposal has been designed to mirror the main house as a result of the lean-to design, however, whilst the proposal may be subservient insofar as the height does not exceed the eaves of the host dwelling I do not find that the proposal would be visually subservient due to the bulk scale and massing and design combined with the design features discussed above. In particular the interaction of the roof and the first-floor window, and lack of fenestration at ground floor, I find contributes to bulk, scale and massing visually which would be inappropriate for the host dwelling. The proposal would be set back, at first floor level, from the principal elevation of the dwelling, however, I do not find that this is sufficient to support the proposal in design terms with the awkward and contrived nature of the proposed side extension being further exacerbated by the interaction with the proposed rear extension.
The proposal would utilise matching materials and whilst reference has been made to other two storey side extensions granted, each application should be considered on its own merits. The appellant’s planning statement, submitted within the original application, references a project at [address] (21/015687/HOU), however, no details of this site have been submitted before me as part of the appeal submission. I have no details, therefore, of the proposal which is stated to have been approved other than the commentary by the Council that it allowed varied roof forms as being acceptable.
Overall, I find that the proposal would result in visual intrusion which would be detrimental to the character of the surrounding area where the street scene is characterised by appropriate additions, and consistent design to the side of properties, in terms of the general roof scape. The first-floor side extension, above the existing garage, would also be combined with a large single storey rear extension which, cumulatively, would result in an overbearing and unsympathetic addition to the appeal site and the host dwelling by the appellant.
The proposal would be contrary to Plan:MK 2016 to 2031 Policy D1 which requires proposals as a whole respond appropriately to the site and the surrounding context and Policy D2 which requires the massing/scale of a development and appearance of buildings to exhibit a positive character or sense of place for a development and that the design allows for visual interest through the careful use of detailing, where this is appropriate to the character of the area.
The proposal would also be contrary to Policy D3 which requires that the proposed scale and design of extensions to existing buildings relate well to the existing building and plot and do not detract from the character of the existing building and the surrounding area. The proposal would also be contrary to Campbell Park Neighbourhood Development Plan Design Policy 1 which requires proposals to integrate into surroundings in terms of scale, density and design and to respect the character of the area.
Section 06
Other Matters
The appellant has submitted a daylight and sunlight impact assessment, however, impact upon neighbouring residential amenity with regard to such matters does not form a refusal reason from the Council. I note from the Council’s delegated report that they consider the proposed first floor side extension would have some negative impact on the outlook afforded from the rear windows of [address] and its private rear amenity space, however, on balance the Council do not consider the proposal would cause unacceptable overbearing impact to the neighbouring garden.
I have no reason to conclude differently in relation to such matters and whilst I acknowledge the assessment submitted by the appellant the acceptability of the proposal in the context of residential amenity does not overcome the issues which I have found with the proposal in the context of design, siting and visibility in terms of character and appearance of the existing dwelling and the street scene itself.
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
- 10 November 2025Matches the official casework database
- Extracted site visit dates
- 5 November 2025 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3374551
- Application reference
- PLN/2025/1013
- Lead case reference
- Not recorded
- Planning authority
- Milton Keynes Council
- Planning authority code
- E06000042
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
- 49 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
- 13 October 2025
- Valid date
- 14 October 2025
- Start date
- 15 October 2025
- Planning authority decision date
- 21 July 2025
- Appeal decision date
- 10 November 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
- 79409
- 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