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Official casework recordDismissedCurrent release

Appeal 3309727

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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

construction of two storey rear extension, dormer to side roof slope and relocation of garage.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Preliminary Matters

    The decision notice and [name] indicate that the appeal proposal was determined on the basis on the application drawings validated on 18 June 2021 (original plans). However, the [name] of Appeal included a revised set of plans that they indicated were submitted to the Council on 10 October 2021, well before the decision to refuse planning permission. During my site visit it also became clear that the Appellant had constructed the rear extension in accord with these revised plans. This was on the basis that the Appellant considered the reduction in the size of the proposed extension, as shown on the revised plans, resulted in that part of the proposal falling within the scope of permitted development.

    I invited the Council and the Appellant to comment on these events. [name] looked at the option of considering the revised plans, the Council’s response was that these plans were never substituted and that they determined the application on the basis of the original plans. The Council went on to indicate that the failure to substitute the plans was due to human error, but that they had not considered the revised plans and to do so would require a new planning application to be submitted.

    There were four objections from interested parties to the original application, which included several photographs of the alleged impact of the proposal on neighbours living conditions. The revised plans showed that substantial changes had been made to the original scheme and those interested parties should have been given the opportunity to comment on these changes. However, as the plans were not substituted by the Council these interested parties were never reconsulted. Whilst the revised plans were submitted with the appeal through the [name] (HAS), the latter only requires interested parties to be notified that an appeal has been submitted. The HAS process does not provide interested parties with a further opportunity to comment or to be consulted on any revised submissions (plans).

    Given the above and in applying the ‘[name], in my view, the determination of the appeal on the basis of the revised plans would prejudice the interests of those interested parties as they have not been consulted on or had an opportunity to comment on these revised plans. I have, therefore, proceeded to determine the appeal on the basis of the original plans.

    In doing so, I fully understand the Appellant’s frustrations in that it appears that they sought to address the concerns raised by the Planning Case Officer (PCO) and interested parties through the submission of these revised plans. Even so, it is not possible for me to determine whether or not those changes would have led to the interested parties maintaining or withdrawing their objections. Whilst the Council contend that the failure to substitute the plans was human error, that does not appear to fully explain how, in responding to the Appellants email that accompanied the revised plans, officers did not make note of the submission of these plans or why they were not picked up when the file was allocated to a new PCO.

    I note that the Appellant considers that their interests to have been prejudiced by the delays and errors in processing the application. However, it is essential that the appeal process is fair and open to all parties, including interested parties. [name] confirmed, the changes shown on the revised plans are substantial and they were not formally substituted or subject to further consultation with the objectors. If the Appellant wishes to pursue this matter further the only suggestion I can make is that they take this complaint up directly with the Council.

  3. Section 04

    [name]

    The main issues are the effect of the proposed development on: (a) the character and appearance of the host property and surrounding area; and (b) the living conditions of neighbouring occupiers.

  4. Section 05

    Character and appearance

    The appeal site is located on the southern side of [address] close to its junction with [address] and comprises a large two storey semi detached property located within a good sized plot. The surrounding area comprises similar semi-detached and detached two storey properties, as well as some chalet style properties, that vary in terms of their style, scale, roof forms and materials.

    The other half of the semi to the host property is formed by [address] (No.28). Whilst the latter has been extended at the rear, on the ground and part first floor, these additions are on a much smaller scale to the proposed rear extension to the host property. In this respect, I agree with the Council that the size, depth and location of the proposed rear extension would result in it being visually prominent and overbearing, and thus harmful to the character and appearance of the host and wider area. Although sited at the rear, the proposed extension is very visible due to the elevated position of the appeal site relative to [address], from where there are clear views of the rear of the host and its neighbours.

    The size, height and length of the proposed dormer, on the side roof slope (as extended), would also be visually prominent within the roofscape to the host and streetscene. It would sit marginally below the ridge and marginally above the eaves to the existing main roof (as extended), covering a large part of the side roofscape. As such, it would represent a discordant feature that would overwhelm this part of the roof. [name] accept that there are examples of other roof dormers in the area, these appear more subservient and proportional to their hosts. [name] also consider that a dormer, on this part of the roof, could, in principle, be acceptable, the size, height and length of the proposed dormer would be excessive resulting in a feature that would not sit comfortably on the roofscape to the host property.

    The proposed relocation of the existing single storey garage would be acceptable and would not result in any harm to the character or appearance of the host or surrounding area. Any common boundary issues that this relocation gives rise to are matters covered by other legislation.

    In relation to the revised plans, as I confirmed earlier, these show a reduction in the size of the proposed rear extension and side dormer, albeit some of the plans are marked ‘Not to Scale’ but then have a scale in the ‘key’ and although, for example, the depth of the new rear extension is noted as being 3 metres, as drawn (on plan and elevation) it appears to be the same size as the original 4 metre extension. Even so, the Appellant contends that the construction of the revised rear extension and side dormer would constitute permitted development, and on this basis the extension has been constructed on site.

    [name] made clear when I invited the parties to comment on these events, whether a proposal is permitted development or not and thus is lawful is not a matter that I can determine within the context of an appeal that has been submitted under section 78 of the Town & Country Planning Act 1990 (TCPA 1990). I can only consider the proposal that is before me, which seeks planning permission for, amongst other works, a rear extension and dormer window. It remains open to the Appellant to apply to the Council under section 191 or 192 of the TCPA 1990 to establish the lawfulness or otherwise of the as constructed extension and/or the proposed revised dormer, and the determination of that application would not be affected by my decision on this appeal.

    Accordingly, I find that the proposed rear extension and side dormer would be contrary to policy PCS23 of The Portsmouth Plan ([name]) (January 2012) (TPP), which seeks, amongst other requirements, to ensure that new development is sympathetic to local character and the surrounding built environment, and is also appropriate in terms of its scale and appearance.

  5. Section 06

    Living conditions – neighbours

    I am satisfied that the proposed relocation of the existing garage and new side dormer would not result in any significant harm to the living conditions of neighbouring occupiers. The proposed dormer would be sited within the plane of the main roof (as extended) and there would remain a reasonable gap between this part of the host property and the side of [address] (to the west). Any issues of overlooking, from the proposed windows to the new dormer, could, if I were minded to allow the appeal, be addressed by a condition requiring obscure glazing and non-opening windows below eye level.

    The proposed rear extension would have a depth of approximately 4 metres, with the first and second floor elements set back from the common boundary with No.28. The second floor would also be designed as a gable end. Even with the setback, the impact of this part of the extension on the living conditions of No.28 would, in my view, be harmful. That harm would result from the overbearing impact that the proposed extension would have on the rear windows and private amenity area to No.28. It would also lead to a harmful sense of enclosure.

    For similar reasons, the proposed extension would be harmful to the living conditions of the neighbouring occupiers at [address]. Whilst the latter fronts onto [address], it occupies the corner plot with [address] and in view of this and its orientation to the host property, the proposed extension would be very visible from the garden and windows of [address], from where it would have an overbearing impact on their outlook.

    With regard to the new windows, at first and second floor level, within the proposed rear extension, any views over adjoining properties would either be at an oblique angle or towards the rearmost part of their gardens or would not be materially different to the views which existed from the original first floor windows to the host property. In view of this and the distances between the proposed extension and some neighbouring properties, I am satisfied that these windows would not result in any harmful overlooking of neighbouring occupiers. Moreover, the relationships that arise would reflect those commonly found in built up suburban areas such as this, where mutual overlooking of adjoining windows and gardens is an inherent characteristic.

    The Appellant has referred to the existence of permitted development rights as a fallback option and I accept that this can be a material consideration to which weight should be accorded. In this case, the relevance of this issue has largely been overtaken by the construction of the rear extension, as the Appellant contends, under permitted development rights. Even so, assuming the rear extension, as constructed, is lawful the impact on the living conditions of neighbouring occupiers of an extension that is 1 metre shorter is, in my view, materially different to the impact that would result from the appeal proposal.

    Accordingly, I find that the proposed rear extension would be contrary to policy PCS23 of TPP and paragraph 130 f) of the National Planning Policy Framework (July 2021), which seek to ensure, amongst other requirements, that new development results in the provision of a good standard of living environment for neighbouring occupiers as well as future residents.

  6. Section 07

    Conclusion

    For the reasons given above and having taken all the matters raised into account, 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 248No official casework-database value to compare
    Extracted decision date · page 1
    21 March 2023Matches the official casework database
    Extracted site visit dates
    2 February 2023 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3309727
Application reference
21/00906/HOU
Lead case reference
Not recorded
Planning authority
Portsmouth City Council
Planning authority code
E06000044

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
45 m²
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
26 October 2022
Valid date
26 October 2022
Start date
20 January 2023
Planning authority decision date
3 August 2022
Appeal decision date
21 March 2023

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
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
Horizon
Dataset status
Current release
Catalogue record ID
29992
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