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Official casework recordDismissedCurrent release

Appeal 3337057

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

double storey front extension.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Preliminary Matters

    I’ve taken the site address above from the appeal form, albeit with a slight amendment to the order.

    The description of development cited in the planning application form differs to that contained within the decision notice and appeal form. There is no evidence that this change was formally agreed. In the interests of clarity, I rely upon the description as included in the application form for the purposes of the heading above.

  3. Section 04

    [name]

    The main issues are: • the effect of the proposal on the character and appearance of the area; and • the effect of the proposed development upon the living conditions of the occupiers of No 16 The Birches with particular regard to outlook.

  4. Section 05

    Character and Appearance

    The Birches is a modern cul-de-sac located off [address] which provides a main route to the surrounding streets. The character of The Birches is suburban and spacious, which is enhanced by largely unenclosed front gardens/driveways and the mature landscaping.

    The cul-de-sac consists predominately of two-storey detached and semi-detached houses with some minor variation in orientation to the road. Properties along the street display a variety of styles and designs, but all are of brick with pleasing design elements such as sections of first floor tile detailing.

    The proposal is to enlarge the property at the front by constructing a two-storey extension. It would share a similar gable appearance to that on the opposite elevation albeit narrower with a greater projection. It would be sited on the existing driveway and retain nearby landscaping.

    The proposed two storey extension would be of a projection that would not respect the character and massing of the locality when taking into account dwellings in the vicinity. Despite the use of matching materials, the proposal would add a bulky gable projection that would result in a two-storey front extension that would appear out of character for both the host dwelling as well as within the context of the neighbouring dwellings.

    Additionally, as a result of the layout of the street and even when taking into consideration nearby trees the flank elevation of the appeal property is visible from many viewpoints along The Birches. The development would result in the introduction of an unattractive, featureless elevation which would appear prominently within this street scene, detrimental to its overall character and appearance. The proposal would, therefore, result in an extension which would be uncharacteristic for the host dwelling and incongruous within the immediate surrounding area.

    For the reasons above, the proposed development would significantly harm the character and appearance of the area. It would fail to accord with Policy CS22 of the [name] (CS) and Policy SADM30 of the Site Allocations and Development Management Policies Plan (SADMPP). These seek, amongst other things, to ensure development is of high-quality design; recognises and complements the particular local character of the area in which it is located. In addition, it would conflict with the Council’s Planning and [name] (PDG) – [name], in relation to front extensions. It would also be contrary to the National Planning Policy Framework (the Framework) where it states developments should be sympathetic to local character.

  5. Section 06

    Living Conditions

    The proposed extension would have a lower ridge height than the existing dwelling with a matching eaves height. Notwithstanding this, the scheme would increase the depth of the built form that is set very close to the rear boundary of 16 The Birches (No 16). Given the short separation the extension would be a noticeable presence above and beyond the boundary fence and would be obvious from within the garden of No 16.

    The height, depth and close proximity of the elongated flank wall would result in it becoming an imposing and dominating feature from No 16. The scheme would create an uninviting outlook, and an increased sense of enclosure, from within the garden of No 16 particularly given the presence of existing tall trees to the side boundary adjacent the road.

    Therefore, the proposed development would unacceptably harm the living conditions of the occupiers of No 16 with regard to outlook. It would fail to accord with Policy SADM30 of the SADMPP, in so far as it seeks to limit the impact on the amenity of neighbouring occupiers. In addition, it would conflict with the aims of the Council’s PDG in relation to amenity. It would also be contrary to the Framework where it states developments should provide a high standard of amenity for existing users.

  6. Section 07

    Other Matters

    I acknowledge the appellant sought to work with the Council but was unable to reach an agreement on an amended development. However, this does not alter my findings or lead me to a different conclusion on the main issue.

    While a development that reduces carbon emissions is a positive benefit this does not overcome the harms identified.

    My attention has been drawn to a development at 22 The Birches. I do not have the full details before me. However, it does not entirely reflect the design or the scale of the proposal before me. The presence of this extension does not overcome the harm that I have otherwise found.

  7. Section 08

    Conclusion

    The proposed development conflicts with the development plan when considered as a whole and there are no material considerations, either individually or in combination, that outweighs the identified harm and associated development plan conflict.

    Therefore, for the reasons given above, 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 716No official casework-database value to compare
    Extracted site visit dates
    12 March 2024 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3337057
Application reference
23/0622/HSE
Lead case reference
Not recorded
Planning authority
Hertsmere Borough Council
Planning authority code
E07000098

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
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
Dismissed
Decision category
Dismissed
Received date
17 January 2024
Valid date
1 February 2024
Start date
19 February 2024
Planning authority decision date
27 December 2023
Appeal decision date
20 March 2024

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
48481
First seen
20 August 2026 at 14:24
Last seen
20 August 2026 at 16:27
Removed from release
Not recorded
Record created
20 August 2026 at 14:24
Record updated
24 August 2026 at 16:21