Appeal 3373104
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
5 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
conversion of part of the existing garage and associated alterations to the workshop, laundry, guest accommodation and associated facilities, including alteration and loft conversion, to provide additional living accommodation.
Section 02
Decision
The appeal is dismissed.
Section 03
Main Issue
The main issue raised by this appeal is the effect of the proposed development on the character and appearance of the host dwelling and surrounding area.
Section 04
Reasons
The proposed alterations, although not significantly increasing the height of the roof, would substantially alter the roof form of the off-shot and significantly alter the appearance of this projection. The dormer windows would project above the roof ridge and beyond the roof slopes and would appear as wide large additions that would have a prominent appearance within the roof. The overall large alterations to the roof would create a development of top heavy roof design that would not appear as subordinate additions to the off-shot. Further to this, the varying window forms, both within the elevations and the roof, would create a disjointed appearance to the off-shot.
I accept that the off-shot in its altered form would remain a subordinate structure to that of the host dwelling. Nonetheless, the form and design of the alterations to the off-shot, having a large flat roofed appearance, horizontal proportions and disjointed fenestration, would not relate well to the roof pitches and vertical proportions of the host dwelling. Therefore, I do not agree with the appellant that the contemporary design approach for the off-shot would blend with the context of the replacement farmhouse, even if of modern design in itself. Contrary to this view, the alterations to the off-shot would be visually jarring as they would not successfully visually assimilate with the new farmhouse.
The harm arising from the proposed development would be clearly visible in public views from the public footpath to the west of the appeal property. The retaining wall and vegetation would not screen the proposal sufficiently from such public views that would obviate the visual harm arising from the proposal.
For these reasons, I conclude that the proposed development would be harmful to the character and appearance of the host dwelling and surrounding area. The proposal would, therefore conflict with Policies DP12 and DP26 of the Mid Sussex District Plan, Policy EG3 of the [site address] Neighbourhood Plan, the [name] Planning Document (SPD) and the provisions of the National Planning Policy Framework. These policies seek development, amongst other matters, including alterations and extensions to existing buildings and replacement dwellings, to be well designed while being sensitive to the countryside. The SPD seeks extensions to respond to the design of the original dwelling and to be of simple, uncomplicated building form to complement and coordinate with the scale, form and massing of the original dwelling.
I acknowledge that the roof extensions would make better use of the space within the off-shot and that adapting the space within it would provide increased living space for the appellants and their family. Whilst this is a personal benefit for the appellants, this does not outweigh the visual harm arising from the development, as set out above, and does not justify the proposed development.
I have been referred to a contemporary new home that has been granted planning permission by the Council at [address] Mill, to which I am advised is a very sizeable contemporary dwelling. I have not been provided the full details of that case that would enable me to determine what similarity, if any, that development would have to the proposal that is before me. Notwithstanding this, that proposal relates to a different location in which different considerations will have applied. The proposal before me can and should be considered on its own individual merits taking into consideration the context of the site.
Section 05
Conclusion
Having regard to the above findings, 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 309No official casework-database value to compare
- Extracted decision date · page 1
- 11 November 2025Matches the official casework database
- Extracted site visit dates
- 29 October 2025 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3373104
- Application reference
- DM/25/1084
- 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
- 16 September 2025
- Valid date
- 22 September 2025
- Start date
- 22 September 2025
- Planning authority decision date
- 30 July 2025
- Appeal decision date
- 11 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
- 79503
- 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