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Official casework recordDismissedCurrent release

Appeal 3351933

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Official decision document

The decision, section by section

12 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

erection of two detached outbuildings.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Appeal Procedure

    The site visit was undertaken by a representative of the Inspector whose recommendation is set out below and to which the Inspector has had regard before deciding the appeal.

  3. Section 04

    Preliminary Matters

    On 12 December 2024 the Government published a revised National Planning Policy Framework (the Framework). Both parties have had the opportunity to comment on any implications for the appeal, and I have taken comments received into account.

    I have used the Council’s description of development as it more clearly and concisely describes the proposals. The description on the application form also only refers to one outbuilding, when two are proposed.

  4. Section 05

    [name]

    The main issues in the appeal are: • Whether the proposal would be inappropriate development in the Green Belt having regard to the Framework; • The effect of the proposal on the openness of the Green Belt; • The effect of the proposed development on flood risk, flood defences and maintenance of the adjacent [name] and [name] watercourse; and • If the development would be inappropriate, whether the harm to the Green Belt by way of inappropriateness and any other harm, would be clearly outweighed by other considerations so as to amount to the very special circumstances necessary to justify it.

  5. Section 06

    Whether it would be inappropriate development

    The appeal property contains a large, detached dwelling, with a spacious rear garden intersected by small branches of the [name]. It features a patio area and swimming pool, areas laid to lawn, footbridge river crossings and a number of outbuildings and structures. The main branch of the [name] is located outside, but immediately adjacent to the appeal site.

    The proposal is for the construction of two detached outbuildings. Paragraph 154 of the Framework states that new buildings are inappropriate in the Green Belt unless they fall within the given list of exceptions. Policy CP11 of the Local Development Framework Core Strategy (adopted 17 October 2011) (the ‘[name]) is generally consistent with the Framework relating to the Green Belt. It refers to the pressure on the Green Belt within the District, emphasising the general presumption against inappropriate development. Policy DM2 of the [name]

  6. Section 07

    Development Management Policies Local Development Document (adopted July

    (the ‘LDD’) states that proposals for new buildings in the Green Belt will be assessed in accordance with the Framework. However, it also supports the provision of ancillary buildings in the Green Belt subject to demonstrating, amongst other things, that the proposal would not adversely affect the openness of the Green Belt and the landscape.

    One of the exceptions in the Framework is the extension or alteration of a building provided that it does not result in disproportionate additions over and above the size of the original building. As the proposed outbuildings are set away from the main dwelling, I consider that the substantial physical separation means that the proposal should not be considered as an extension to the existing building. The Council have come to the same conclusion and the appellant does not dispute this.

    The appellant has however stated that the outbuildings have been designed to store garden equipment and should therefore be classified as buildings for agriculture. Buildings for agriculture is another exception listed in the Framework where development would not be inappropriate in the Green Belt. However, the appeal property is a residential dwelling and on this basis I cannot accept the proposed buildings are for agricultural use.

    The updated Framework has introduced the concept of grey belt land. This establishes that development would not be regarded as inappropriate where it would utilise grey belt land and would not fundamentally undermine the purposes of the remaining Green Belt; where it would meet a demonstrable need; would be in a sustainable location; and (where applicable) meets the ‘[name].

    The appeal site does not strongly contribute to the purposes of the Green Belt. The appeal site is located close to [name] and appears to me to be a reasonably sustainable location. However, there is no demonstrable unmet need for this type of development according to the Council, albeit I note the appellant claims a personal need, and the ‘[name] are not applicable.

    The proposed development is therefore inappropriate development in the Green Belt and is contrary to the Framework, Policy CP11 of the [name] and Policy DM2 of the LDD.

  7. Section 08

    Openness

    The Framework states that “the fundamental aim of Green Belt policy is to prevent urban sprawl by keeping land permanently open; the essential characteristics of Green Belts are their openness and their permanence”. Openness can be determined by visual and spatial aspects.

    Whilst of a fairly modest size in the context of the appeal site, spatially, the proposed outbuildings would add structures in a previously undeveloped part of the appeal site, within the Green Belt. It would therefore reduce its openness.

    The two outbuildings would be located in a relatively discreet corner of the appeal property, away from the main dwelling. The proposed outbuildings would be screened from view by mature landscaping and a high boundary wall. The proposed outbuildings would therefore not be highly visible from within or outside the appeal site and would have a very limited impact on visual openness.

    Overall, therefore, the proposal would have a harmful, albeit limited, effect on openness. This harmful impact on openness, and the inappropriateness of the proposal in principle, both carry substantial weight.

  8. Section 09

    [name] and [name]

    The proposed outbuildings are located on a section of garden that has a branch of the [name] running adjacent to it on one side (within the site boundary) and the [name] on the other, just outside the site boundary.

    The appellant has stated that the appeal site is located in [name] 1, however, the evidence provided by the Council and the Environment Agency indicate the proposed outbuildings would be located within [name] 3b (functional flood plain). As an ancillary building to a residential dwelling, the proposed building would fall within the ‘more vulnerable’ flood risk classification.

    The appellant’s view is that the outbuildings would have a minimum impact on flooding. The appellant has stated that the floor slab of the outbuildings would be set 300mm above the design flood level (although this has not been shown on the planning drawings). Whilst the evidence from the Environment Agency refers to a flood risk assessment prepared by the appellant, this has not been provided to me as part of the appeal. I therefore do not have the evidence before me that demonstrates that the proposed development would not be at risk from flooding and not increase flood risk.

    The Environment Agency have also objected to the proposals on the basis that the outbuildings would potentially restrict essential maintenance and emergency access to the watercourse, adversely impact the stability of the flood bank, interfere with natural geomorphological processes and be placed at risk of damage arising from channel migration and erosion. The Environment Agency also state that the applicant has not considered the space required (8m) for future flood defence maintenance or replacement, including the use of vehicles and heavy-duty machinery.

    The appellant has highlighted to me that the proposed outbuildings would be separated from the [name] by a tall fence and mature vegetation and there would be a minimal impact on maintenance of the watercourse. I do not agree this would be the case as if future maintenance is needed it would be impeded by the location of the proposed outbuildings.

    On the basis of the above, it has not been demonstrated that the proposal would not increase the risk of flooding and prevent other potential adverse impacts on the [name] and the [name]. The proposal would be contrary to the Framework and Policy CP1 of the [name] and Policy DM8 of the LDD, that seek, amongst other things, to avoid development in areas at risk of flooding, provide appropriate flood protection and mitigation measures and ensure development is normally set back from a main river with a minimum 8m wide buffer zone to prevent any significant impact from flooding.

  9. Section 10

    [name]

    Paragraph 153 of the Framework states that inappropriate development is, by definition, harmful. Paragraph 153 requires substantial weight to be given to any harm to the Green Belt and requires very special circumstances to be demonstrated to clearly outweigh any harm to the Green Belt by way of inappropriateness, or any other harm.

    The proposed outbuildings would enable the appellant to store garden and household equipment. I also note that there will be no change to road access arrangements and landscaping. These matters in favour of the development are weighed in the planning balance below.

  10. Section 11

    Planning Balance and Conclusion

    The development is inappropriate development in the Green Belt, and harms its openness, to which I must attribute substantial weight against the development. Added to which is the harm relating to flood risk and adverse impacts on the [name] and [name]. Balanced against that are the other considerations identified above. The appellants need for the proposed development attracts only limited weight, the lack of harm to access arrangements and landscaping carries neutral weight. I conclude that the other considerations do not clearly outweigh the harm to the Green Belt and therefore there are no very special circumstances to justify the proposal.

    Therefore the proposed development would be contrary to the Framework and Policies CP1 and CP11 of the [name] and Policies DM2 and DM8 of the LDD as described above.

    For the reasons given above, and having regard to all other matters raised, I conclude that the appeal should be dismissed.

  11. Section 12

    Inspector’s Decision

    I have considered all the submitted evidence and my representative’s report and on that basis 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 942No official casework-database value to compare
    Extracted decision date · page 1
    2 September 2025Matches the official casework database
    Extracted site visit dates
    17 June 2025 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3351933
Application reference
24/0745/FUL
Lead case reference
Not recorded
Planning authority
Three Rivers District Council
Planning authority code
E07000102

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
1
Site in Green Belt
Yes
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
Dismissed
Decision category
Dismissed
Received date
15 September 2024
Valid date
15 September 2024
Start date
9 October 2024
Planning authority decision date
12 July 2024
Appeal decision date
2 September 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
75604
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