Appeal 3277318
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
11 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 erection of a mansard roof extension.
Section 02
Decision
The appeal is dismissed.
Section 03
Appeal Procedure
The site visit was undertaken by an Appeal Planning Officer whose recommendation is set out below and to which the Inspector has had regard before deciding the appeal.
Section 04
Procedural Matters
The Government published a revised version of the National Planning Policy Framework (the Framework) on 20 July 2021. Regard has been had to the revised national policy as a material consideration in the decision-making process. However, in this instance, the issues most relevant to the appeal remain unaffected by the revisions to the Framework. There is therefore no requirement to seek further submissions on the revised Framework.
A number of revised plans were been provided as part of the application process. The appellant has made it clear that aside from the original plans (drawing nos. 102 [name], 103 [name], 104 [name], 105 [name]) ([name]) and the plans which propose a roof extension set in from the northern side only (drawing nos. 106, 107, 108, 109) ([name]), the other revised plans would be unviable. The appeal will therefore have regard to both [name] and [name] only.
Section 05
Main Issue
The main issue is whether the proposal would preserve or enhance the character or appearance of the [address] Conservation Area.
Section 06
Reasons for the Recommendation
The site is within the [address] Conservation Area (CA). Section 72(1) of the Planning (Listed Building and Conservation Areas) Act 1990 requires that special attention is paid to the desirability of preserving or enhancing the character or appearance of conservation areas. Paragraph 199 of the Framework states that great weight should be given to the conservation of designated heritage assets. Irrespective of the degree to which the development would be seen from outside the site, harm to the character and appearance of the building would still inherently result in a failure to preserve or enhance the character or appearance of the CA.
[address] Conservation Area Appraisal & [name] notes a mixture of building types, architectural styles, and ages in the CA. The site is a mid-terrace house located towards the corner whereby Wimbledon Park Road meets [address]. The property and the terrace as a whole is well maintained and represents a distinct character which contributes positively to the CA. The main body of the property has a pitched roof. There are currently no roof extensions on the main roof of the property, or those either side of it.
Section 07
[name]
Due to its size, and flat roof, the roof extension would dominate the rear roof slope of [site address] and alter its form and appearance. It would be unsympathetic to the existing character of the building and the wider terrace, and disrupt the terrace’s rear roofscape. It would appear incongruous between the properties adjacent to it, for which the roofs are currently unaltered, and cause harm to the character and appearance of the host dwelling and the terrace as a whole.
Although there are trees to the rear of the property, the roof extension would still be partially visible from the public realm, and the trees could not in any case be relied upon to provide screening in perpetuity. The appeal is considered with respect to its own individual merits. The roof extensions at other properties in the vicinity of the site are different to the one proposed and possess different contextual circumstances. They do not justify or mitigate the harm that would arise from the roof extension proposed.
The Wandsworth Local Plan Supplementary Planning Document Housing (SPD) states that extensions should respect the form and proportions of the original house, aim to be sympathetic to the style and character of the house, and complement the surrounding buildings. For the reasons above, the roof extension would not adhere to the guidance provided in the SPD.
The amendments made to the size, design, and placement of the roof extension would result in a minor mitigation of the harm identified in [name]. The amendments would not be sufficient to alleviate the harm, and the roof extension in [name] would therefore also fail to preserve or enhance the character or appearance of the CA.
Section 08
Conclusion
[name] and [name] would be seen from a very small proportion of the CA and the extent of the harm to the heritage asset would therefore be less than substantial. However, no substantive public benefits have been put forward to weigh against this harm.
For these reasons, the roof extensions in [name] and [name] would fail to preserve or enhance the character or appearance of the CA. They would fail to comply with Policy D6 of the London Plan (March 2021), Policy IS 3 of the Wandsworth Local Plan Core Strategy (March 2016), and [name] 1, DMS 2, and DMH 5 of the Wandsworth Local Plan Development Management [name] (March 2016) which together seek to ensure development is of a high quality and well designed, that heritage assets are conserved, and that the existing character of the borough is protected. They would also fail to align with the Framework and its aim to conserve heritage assets.
Section 09
Other Matters
The Council have found no issue with the proposed rooflights. These would be minor alterations and there is therefore no reason to disagree with the Council on this matter. This would not mitigate the harm identified.
Although other schemes which could potentially avoid harm to the character or appearance of the CA are not considered viable options, this does not justify or mitigate the harm that would arise from [name] or [name].
Providing additional space for the appellant’s growing family is a personal circumstance and it seems some additional accommodation could be achieved by other means. It therefore holds very little weight which would not outweigh the harm identified.
Section 10
Conclusion and Recommendation
Based on the above, and having regard to all matters raised, I recommend that the appeal should be dismissed.
Section 11
Inspector’s Decision
I have considered all the submitted evidence and the Appeal Planning Officer’s report and on that basis 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 inspector · page 1
- Inspector attribution ID 859No official casework-database value to compare
- Extracted decision date · page 1
- 30 November 2021Matches the official casework database
- Extracted site visit dates
- 26 October 2021 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3277318
- Application reference
- 2021/0313
- Lead case reference
- Not recorded
- Planning authority
- London Borough of Wandsworth
- Planning authority code
- E09000032
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
- 20 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
- 18 June 2021
- Valid date
- 18 June 2021
- Start date
- 7 September 2021
- Planning authority decision date
- 1 June 2021
- Appeal decision date
- 30 November 2021
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
- 6810
- First seen
- 20 August 2026 at 14:24
- Last seen
- 20 August 2026 at 16:25
- Removed from release
- Not recorded
- Record created
- 20 August 2026 at 14:24
- Record updated
- 24 August 2026 at 16:21