Appeal 3375728
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
6 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
a single storey rear extension.
Section 02
Decision
The appeal is dismissed.
Section 03
Main Issue
The main issue is whether the proposed development would be permitted development under Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) (the GPDO).
Section 04
Reasons
The appeal property is a semi-detached dwelling in a short row of similar properties. It has a single storey adjunct to the rear elevation, which, from my observations on site and in the absence of any substantive evidence to the contrary, appears to form part of the original property. There is no dispute that permitted development rights for extensions to the property remain intact.
Development is not permitted by Schedule 2, Part 1, Class A, paragraph (j) (iii) of the GPDO if the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse and would have a width greater than half the width of the original dwellinghouse.
The Permitted development rights for householders: technical guidance (September 2019) sets out that a wall forming a side elevation of a house will be any wall that cannot be identified as being a front wall or a rear wall and that houses will often have more than two side elevation walls. The guidance is clear that, where an extension fills the area between a side elevation and a rear wall, then the restrictions on extensions beyond rear walls and side walls will both apply. Accordingly, in this case, in addition to projecting beyond the rear wall, the proposed extension would project beyond a wall forming a side elevation of the original dwelling house for the purposes of Schedule 2, Part 1, Class A.1(j) of the GPDO.
The appellant’s submissions indicate that the extension would be 2.1m wide at the furthest point from the dwelling, which is less than half the width of the original dwelling. However, by virtue of the staggered nature of the side wall of the existing rear projection, the part of the proposed extension immediately to the rear of the dwelling, would project a greater distance from the side wall and would have a width greater than half the width of the original dwellinghouse.
I therefore conclude that, as the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse and would have a width greater than half the width of the original dwellinghouse, the appeal scheme would not constitute permitted development as set out in Part 1, Class A of GPDO. Consequently, express planning permission would be required for the extension, as proposed.
Section 05
Other Matters
The effects or otherwise of the development on the appearance of the dwelling or the street scene are not matters for consideration in the determination as to whether a proposed development would represent permitted development. Moreover, the provisions of the GPDO do not allow for a flexible approach to the interpretation of the regulations.
My attention is drawn by the appellant to a rear extension to the neighbouring property at 1 [name], which it is suggested is identical to the appeal proposal and the Council deemed prior approval was not required. However, I have determined the appeal on its own merits based on the evidence before me.
Section 06
Conclusion
For the reasons set out above, 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 4746No official casework-database value to compare
- Extracted decision date · page 1
- 20 February 2026Matches the official casework database
- Extracted site visit dates
- 17 February 2026 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3375728
- Application reference
- PL/25/3597/PNE
- Lead case reference
- Not recorded
- Planning authority
- Buckinghamshire Council - South Bucks Area *
- Planning authority code
- E07000006
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
- 3. Refused prior approval of permitted development rights
- Appeal reason
- Refusal
- Type detail
- Unknown
- 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
- 9 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
- 12 November 2025
- Valid date
- 12 November 2025
- Start date
- 17 November 2025
- Planning authority decision date
- 20 October 2025
- Appeal decision date
- 20 February 2026
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
- 84725
- 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