Appeal 6004256
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
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
the addition of one storey 2.7m in total height including the new floor structure zone. Walls and fenestration to the principal front and rear elevations of the building at the new proposed first floor level, including masonry walls to match the existing and roof tiles and pitch to match the existing, with all hips and valley replicated.
Section 02
Decision
The appeal is dismissed.
Section 03
[name]
The provisions of Article 3(1), Schedule 2, Part 1, Class AA of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended (GPDO), subject to limitations and conditions, grants planning permission for the enlargement of a dwellinghouse through the construction of additional storeys. As set out in the GPDO, the developer must, before beginning the development, apply to the local planning authority for a determination as to whether the prior approval of the authority will be required.
Section 04
[name]
The main issues are: • Whether any additional storey is constructed other than on the principal part of the dwellinghouse; and • Whether prior approval should be granted having regard to the external appearance of the dwellinghouse.
Section 05
Reasons
The appeal site is formed of an extended bungalow set within a spacious and leafy plot. The bungalow is constructed from facing brickwork with a central element and subservient parts either side defined by a lower ridge height. The bungalow has been extended to the rear including in the form of a conservatory and modest flat roof element. [address] is characterised by large detached dwellings of varying sizes and designs set within spacious plots.
[name].1(i) states that development is not permitted if any additional storey is constructed other than on the principal part of the dwellinghouse.
[name].4 defines the ‘principal part’ of the dwellinghouse as ‘the main part of the dwellinghouse excluding any front, side or rear extension of a lower height, whether this forms part of the original dwellinghouse or is a subsequent addition’.
I acknowledge that the parts of the dwelling either side of the central section have the same eaves height. However, on account of their lower roof heights compared to the central section I am of the view that these parts do not form the main part of the dwellinghouse. Therefore, the scheme as proposed would not be solely constructed on the principal part of the dwellinghouse.
Whilst the appellants comments are noted, it is not for me under consideration of a s78 appeal to come to a view as to whether a scheme is or is not within the spirit of the GPDO. My determination is focused upon the contents of the GPDO.
Consequently, I conclude that the proposed development does not comply with Schedule 2, Part 1, Class AA of the GPDO.
Section 06
Other Matters
[name] have found that the proposal is not permitted development, it is not necessary for me to consider the external appearance of the dwellinghouse.
Section 07
Conclusion
For the reasons set out above the appeal does not succeed.
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 180No official casework-database value to compare
- Extracted decision date · page 1
- 29 April 2026Matches the official casework database
- Extracted site visit dates
- 9 April 2026 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 6004256
- Application reference
- 6/2025/2186/PN27
- Lead case reference
- Not recorded
- Planning authority
- Welwyn Hatfield Council
- Planning authority code
- E07000241
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
- Not recorded
- Appeal reason
- refused
- Type detail
- Prior Approval
- Jurisdiction
- No Jurisdiction Associated
- Link status
- Not recorded
Site and development
Published appeal-site measurements and planning designations, without the withheld precise location fields.
- Site area
- 0 hectares
- Floor space
- 450 m²
- Number of residences
- Not recorded
- Site in Green Belt
- No
- Agricultural holding
- Not recorded
- Affects setting of a listed building
- Yes
- 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
- 28 January 2026
- Valid date
- 4 February 2026
- Start date
- 4 February 2026
- Planning authority decision date
- 9 December 2025
- Appeal decision date
- 29 April 2026
Case administration
Published recovery, call-in, costs and enforcement information for this case.
- Redetermined
- Not recorded
- Bespoke
- Not recorded
- 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
- Back Office
- Dataset status
- Current release
- Catalogue record ID
- 88038
- 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