Birmingham Planning Appeal Allowed: The 45-Degree Code Is Not Always Decisive
Cedar Planning secured planning permission on appeal for a ground floor side and rear extension in Brandwood after Birmingham City Council refused the original application over concerns relating to neighbouring light and outlook.
Challenging a refusal of a house extension in Birmingham
The appeal concerned a proposed ground floor side and rear extension to a residential property in Brandwood, Birmingham.
Birmingham City Council refused planning permission, with the principal concern relating to the impact of the extension on the living conditions of the occupiers of the neighbouring properties.
In particular, the Council relied upon Birmingham's 45-degree code when assessing the relationship between the proposed extension and the neighbouring habitable-room windows.
Cedar Planning challenged the refusal through a Section 78 planning appeal.
The appeal was subsequently allowed, with planning permission granted for the development.
Birmingham's 45-degree code
Birmingham City Council considered that the extension did not comply with the 45-degree code contained within the Birmingham Design Guide.
The code involves drawing a line at 45 degrees from the nearest primary habitable-room window towards a proposed extension. It is intended to help identify development which could adversely affect neighbouring properties.
The Council considered that the relationship between the proposed extension and the neighbouring properties justified refusal.
The appeal challenged both the way in which the code had been interpreted and the weight that should be attached to a technical conflict with it when the actual effects upon neighbouring amenity were assessed.
A planning guideline is not the same as an absolute rule
The Inspector recognised that Birmingham's 45-degree code is a useful assessment tool, but that the Birmingham Design Guide allows flexibility where residential amenity would not be compromised.
The decision therefore required an assessment of the real effects of the development rather than simply determining whether a line on a drawing had been crossed.
The height, depth, orientation and physical relationship between the extension and the neighbouring properties all remained relevant.
The central question was whether the proposal would actually cause unacceptable harm to neighbouring daylight, sunlight or outlook.
A technical conflict with the 45-degree code was not automatically sufficient to justify refusing planning permission.
Looking at the actual impact on neighbouring properties
The Inspector considered the proposal on its individual planning merits and examined the relationship with both adjoining properties.
Daylight and sunlight
The Inspector accepted that there would be some loss of sunlight and daylight to one neighbouring property.
However, the extension would be modest in height and set back from the shared boundary. Existing fencing and established planting already affected light reaching the neighbouring property.
The additional impact was therefore found to be limited.
Outlook and dominance
Existing boundary treatment and vegetation would partly screen and soften the proposed extension.
The principal direction of outlook from the neighbouring windows across the rear garden would remain largely unaffected.
The development would therefore not appear unduly dominant or overbearing.
Limited overall impact
For the property on the opposite side, the orientation of the extension meant that any reduction in sunlight or daylight would be minimal.
Its limited height and modest rearward projection also meant that it would not have an unacceptable effect upon outlook.
The Inspector found that the proposal would not conflict with the underlying purpose of the code, which is to safeguard residential amenity.
Applying the flexibility recognised within the Birmingham Design Guide, any technical conflict with the code was not sufficient to justify refusal where the evidence showed that neighbouring living conditions would remain acceptable.
Birmingham's 45-degree rule should not be applied in isolation
This decision does not mean that Birmingham's 45-degree code can be ignored. It remains a relevant tool for assessing the potential effect of house extensions upon neighbouring properties.
What the decision demonstrates is that the code must be considered as part of the wider planning assessment.
Height matters.
A relatively modest extension may have a materially
different impact from a taller proposal.
Orientation matters.
The position of the extension relative to neighbouring
windows can significantly affect daylight and sunlight.
Existing boundaries matter.
Fences, walls and established planting can form part
of the existing context against which an extension
should be assessed.
Actual amenity impacts matter.
A technical breach of guidance should not replace an
assessment of the real effect upon neighbouring
occupiers.
Planning permission granted
The Inspector concluded that the proposed development would not cause unacceptable harm to the living conditions of the neighbouring occupiers.
The appeal was therefore allowed and planning permission granted for the ground floor side and rear extension, subject to conditions.
The result also means that Cedar Planning maintains a 100% success rate on Birmingham planning appeals handled to date.
Has Birmingham City Council refused your planning application?
A refusal of planning permission does not necessarily mean the end of your project. If your application has been refused because of the 45-degree rule, neighbouring amenity, loss of light, outlook or another planning issue, Cedar Planning can review the decision and advise on your prospects of appeal.
Every planning application and appeal is determined on its individual merits. Previous results do not guarantee the outcome of future cases.