Appeal 3309453
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
[name] Extension.
Section 02
Decision
The appeal is allowed and approval granted under the provisions of Schedule 2, Part 1, Paragraph A4 of The Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) (the GPDO) for a rear single storey ground floor extension at [site address] in accordance with the details submitted pursuant to Schedule 2, Part 1, Paragraph A4 (2) of the GPDO.
Section 03
Main Issue
The main issue is whether or not the development is permitted development under Schedule 2, Part 1, Class A of the GPDO.
Section 04
Reasons
Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended (the GPDO), permits development consisting of the enlargement of a dwellinghouse by construction of a single storey rear extension up to a specific size for both detached and semi-detached dwellings. However, development is permitted under Class A subject to limitations and conditions as set out in the Schedule.
[name].4 requires that before beginning the development, the developer must apply to the Council for prior approval in relation to certain matters. The Council find that the proposal is not within the limitations of the GPDO and therefore refused the proposal. They consider this is because the extension would extend beyond a wall forming the side of the original dwellinghouse.
I could see from my inspection on site and agree with the Council that it would be reasonable to come to the view that the double height walk-in bay windows do form part of the original dwelling as this corresponds with the attached dwelling and adjacent houses. This bay extends across approximately half the width of the dwelling with the remaining part of the dwelling flat in its appearance.
The chamfered edge to the bay is set in off the party boundary and has a limited projection from the back wall of the dwelling. As a matter of fact and degree, this projection does not convince me to agree with the Council’s assertion that this serves to be considered as a wall forming a side elevation of the original dwellinghouse. Therefore, based on my own assessment of the facts on the ground, I am persuaded in favour of the appellant.
In granting approval, the Appellant should note that the GPDO requires the materials used in any exterior work to be of similar appearance to those used for the existing dwelling house. No further condition to this effect is therefore necessary.
Section 05
Conclusion
For the reasons given above, I conclude that the appeal should be allowed and approval granted.
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 296No official casework-database value to compare
- Extracted decision date · page 1
- 10 May 2023Matches the official casework database
- Extracted site visit dates
- 25 April 2023 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3309453
- Application reference
- 30330/APP/2022/2442
- Lead case reference
- Not recorded
- Planning authority
- London Borough of Hillingdon
- Planning authority code
- E09000017
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
- 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
- Not recorded
- 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
- Allowed
- Decision category
- Allowed
- Received date
- 20 October 2022
- Valid date
- 20 October 2022
- Start date
- 28 March 2023
- Planning authority decision date
- 12 September 2022
- Appeal decision date
- 10 May 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
- 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
- 32375
- 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