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Official casework recordDismissedCurrent release

Appeal 3360904

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

4 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

an attic conversion including a new dormer and an extension to the roof to form 1 No. bedroom and a home working space. Ridge height and eaves height to remain as existing.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Main Issue

    The main issue is the effect of the roof extensions on the character and appearance of the host dwelling and the [address] street scene.

  3. Section 04

    Reasons

    The appeal scheme seeks to provide increased living space within the roof through a combination of a rear dormer and a side hip to gable extension. In respect of the proposed dormer the Council argues that this would be excessively wide for the existing roof plane and have a boxed appearance.

    However the dormer would be slightly lower than the ridge and significantly set up from the eaves. The windows would be of a matching design to those of the existing rear and appropriately spaced to break up the dormer face. Furthermore, the roof of No. 5 next door has a similarly sized dormer and the roof addition cannot be seen from the street scene or any other part of the public realm.

    The Officer’s Report points out that the dormers at No. 5 and indeed those at No. 9 (with pitched roofs) were assessed under a different development plan and prior to the adoption of the [name] (‘the SPD’). Nonetheless, they are now part and parcel of the rearward context for the appeal scheme and in my view carry significant weight in the appraisal of those now proposed at No. 7. On balance I consider the dormer to be acceptable, notwithstanding an element of conflict with the Council’s SPD.

    Turning to the proposed hip to gable, I acknowledge that this is needed to combine with the dormer to achieve the required additional living space in the roof. However, the continuation of the ridge and the gable end would result in a significant alteration to the roof form. This would both unbalance the dwelling given the hipped roof on the other side and reduce the openness between it and No. 9, especially as both houses are already tight to the shared boundary.

    The grounds of appeal are only able to refer to one hip to gable extension in [address], at No. 56, which suggests that they are otherwise absent from [address]. That extension is seen from the road as being next to the hipped roof of a neighbouring property, as would be the case here. And in my view it serves only to demonstrate the harm caused to the character and appearance of the original property and its disruptive effect to the street scene. The other examples shown are similarly obtrusive and I consider that hip to gable additions are only normally acceptable when they create balance as opposed to imbalance or at a corner where they may signal a turning point and a change to the character and appearance of the locality. And even in those circumstances they require careful scrutiny.

    Overall, and notwithstanding my acceptance of the proposed dormer, I consider that the proposal would be in harmful conflict with Policy DP26 of the Mid Sussex District Plan 2018; Policy EG3 of the [site address] Neighbourhood Plan 2016; Principle DG52 of the SPD and with Government policy in paragraph 135 a), b) & c) of the National Planning Policy Framework December 2024.

    The appeal therefore fails.

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 204No official casework-database value to compare
    Extracted decision date · page 1
    1 April 2025Matches the official casework database
    Extracted site visit dates
    19 March 2025 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3360904
Application reference
DM/24/2478
Lead case reference
Not recorded
Planning authority
Mid Sussex District Council
Planning authority code
E07000228

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
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 February 2025
Valid date
18 February 2025
Start date
28 February 2025
Planning authority decision date
28 November 2024
Appeal decision date
1 April 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
67278
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