Appeal 6000051
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
8 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
described on the application form as, “single storey rear extension”.
Section 02
Decision
The appeal is dismissed.
Section 03
Application for costs
The appellant made an application for costs. This application for costs has been dealt with in a separate decision.
Section 04
Preliminary Matters
Under Article 3(1) and Class A of Part 1 of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) (GPDO), planning permission is granted for the enlargement, improvement or other alteration of a dwellinghouse, subject to limitations and conditions.
Where an application is made for a determination as to whether prior approval is required for development which exceeds the limits in paragraph A.1(f) but is allowed by paragraph A.1(g) of Class A, paragraph A.4(3)(b) provides that the Local Planning Authority may refuse an application where, in the opinion of the authority the developer has provided insufficient information to enable the authority to establish whether the proposed development complies with the conditions, limitations or restrictions applicable to development permitted by Class A. The Council refused the application under paragraph A.4(3)(b). This has been reflected in the main issue, below.
The Council also refused the application under paragraph A.4(7) of Class A, which requires the Local Planning Authority to assess the impact of the proposed development on the amenity of all adjoining premises, taking into account any representations received. However, this matter only falls to be considered if the proposed development would constitute permitted development, which I address in the main issue below.
Regulation 8(1) of the Town and Country Planning (Appeals) (Written Representations Procedure) (England) Regulations 2009 (the Regulations) provides that, amongst other things, the Secretary of State may in writing require the Local Planning Authority to provide such further information relevant to the appeal as may be specified.
The submitted version of the Council’s Delegated Report was missing all of the pages after page 1. That version is clearly not a full and complete copy of the report, as no text is given for the ‘Officer’s Assessment’ section, apart from the words ‘Site Description’. Consequently, under Regulation 8(1) of the Regulations, the Council were asked to provide a full copy of the report, and this was received. The appellant was given an opportunity to comment on the full copy of the report, and I have taken the comments received into account. I am therefore satisfied that the appellant’s interests have not been prejudiced by the full copy of the report being considered in this appeal.
I have had regard to the copy of the metadata submitted by the appellant. Metadata relates to the PDF itself, not to the text within the document. It would be highly unlikely that the Council would seek to frustrate a legitimate request made by an Inspector, by providing a copy of a report that is different from that produced prior to the issuing of the Council’s decision on the planning application. In any event, the report itself is dated 4 December 2024, meaning that the recommendations within it were made before the Council’s decision was issued on 6 December 2024. I have therefore considered the report as being a true reflection of the Council’s decision-making at the time the application was determined.
Section 05
Main Issue
The main issue is whether sufficient information has been provided to establish whether the proposed development would be permitted development under Class A of Part 1 of Schedule 2 of the GPDO.
Section 06
Reasons
The appeal site comprises a semi-detached dwelling, [site address] (No 59), which has a patio and a garden to its rear.
Article 2(2) of the GPDO provides that, amongst other things, unless the context otherwise requires, any reference in the GPDO to the height of a building or of plant or machinery is to be construed as a reference to its height when measured from ground level; and “ground level” means the level of the surface of the ground immediately adjacent to the building or plant or machinery in question or, where the level of the surface of the ground on which it is situated or is to be situated is not uniform, the level of the highest part of the surface of the ground adjacent to it.
The area of garden to the rear of the site clearly constitutes the natural ground level on site. The surface level has however been artificially raised by the incorporation of a patio to the rear of No 59. In this regard, the Permitted development rights for householders: Technical Guidance (published 2019) clarifies that ground level would not include any addition laid on top of the ground such as decking.
As the patio is in-situ, and in the absence of historical information showing the surface levels on site prior to the introduction of the patio, the exact surface level adjacent to No 59 is not certain. However, considering the gently sloping nature of the rear garden area and noting that the garden area continues past the patio up to the gates adjacent to the driveway at a low-lying level relative to No 59, it is likely that the level of the highest part of the surface of the ground adjacent to No 59 – the ground level in this case – is actually much lower than as indicated on Figure 1 submitted in the Appeal Statement1, which shows the proposed extension sited upon the existing patio.
It follows that, as measurements must be taken from ground level, it has not been demonstrated that the proposed development would comply with paragraph A.1(i) of Class A which provides that development is not permitted by Class A if the enlarged part of the dwellinghouse would be within 2 metres of the boundary of the curtilage of the dwellinghouse, and the height of the eaves of the enlarged part would exceed 3 metres. As it has not been demonstrated that accurate information has been provided in this regard, the requirement under paragraph A.4(2)(a)(iii) of Class A, that the developer must provide the height of the eaves of the enlarged part of the dwellinghouse, has not been fulfilled.
The appellant has mentioned that the proposed extension would not incorporate the existing raised patio. Even so, as it appears that the maximum height of the proposed extension as stated on the application form has not been accurately calculated from ground level, it has not been demonstrated that the total height of the proposed extension would comply with paragraph A.1(g)(ii) of Class A, which restricts the enlarged part of the dwellinghouse to 4 metres in height.
For the reasons given above, I find that sufficient information has not been provided to establish whether the proposed development would be permitted development under Class A of Part 1 of Schedule 2 of the GPDO.
Section 07
Other Matters
Following my finding on the main issue above, that it has not been demonstrated that the proposed development would be permitted development, it is not necessary to consider the effect of the proposed development on the living conditions of the occupiers of 61 [name], under paragraph A.4(7) of Class A.
Mention has been made of the potential application for a Lawful Development Certificate or for a compliance check via enforcement action to clarify the original ground level on site. However, neither of these options obviates the necessity for it to be demonstrated that the requirements of the GPDO would be met, which is the main issue in this appeal. The Council had the opportunity to request further information in line with paragraph A.4(8) of Class A. However, there is nothing in the GPDO which requires this power to be used before a Local Planning Authority refuses an application under paragraph A.4(3)(b) of Class A. Therefore, none of the above-mentioned matters changes my findings on the main issue above.
Section 08
Conclusion
For the reasons given above, having considered all matters raised, I conclude that 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 368No official casework-database value to compare
- Extracted decision date · page 1
- 10 March 2025Matches the official casework database
- Extracted site visit dates
- 20 February 2025 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 6000051
- Application reference
- 24/3926/PNH
- Lead case reference
- Not recorded
- Planning authority
- London Borough of Barnet
- Planning authority code
- E09000003
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
- No Application Type Assocaited
- 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
- 677 m²
- Number of residences
- Not recorded
- Site in Green Belt
- Yes
- 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
- 11 December 2024
- Valid date
- 11 December 2024
- Start date
- 16 December 2024
- Planning authority decision date
- 6 December 2024
- Appeal decision date
- 10 March 2025
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
- Yes
- 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
- 65974
- 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