Local Authority Planning Departments are able to request a developer to provide an assessment of Daylight and Sunlight as part of the planning application.
Daylight and Sunlight Tests are integral to the Planning System.
What is a Daylight and Sunlight assessment?
A daylight and sunlight assessment is a technical document that analyses the potential impact of a development on the daylight, sunlight and overshadowing on the surrounding properties, or, assesses how much daylight and sunlight your proposed house will get…
What’s the difference between a daylight and sunlight assessment and rights of light assessment?
Local planning authorities will often request daylight and sunlight assessments from a developer. Right of light is a separate legal matter to the planning process. Daylight and sunlight (for planning) only considers impact on habitable rooms, whereas right to light also considers non-habitable areas too.
At this stage, it should be noted that the Daylight and Sunlight Tests and assessments are integral to the Planning system and are entirely separate from the Legal Right to Light, which uses different parameters to assess the acceptability of light implications on a neighbouring property.
Even though in many circumstances, satisfactory results for the Daylight and Sunlight tests will probably also mean reasonable conclusions regarding Legal Right to Light assessments, this is not always the case and both need to be considered separately. The normal assessment method for Daylight and Sunlight assessments regarding applications for planning permission uses ‘Site Layout Planning for Daylight and Sunlight’, formerly referred to as BRE 209.
Factors considered during an assessment:
- Height of construction
- Distance to external boundaries
- Size of construction
How we can help
We can provide detailed Daylight and Sunlight assessments that would involve 3D CAD modelling and the use of specialist software.
We are always pleased to discuss the possible need for the tests described in the BRE document Site Layout Planning for Daylight & Sunlight with Local Authorities, developers or neighbours to a development.
Contact our team to discuss any questions or assessments you would like us to carry out.