Daylight and Sunlight
We provide analysis, design advice and reports to confirm that new developments meet planning and BREEAM requirements.
Daylight and sunlight assessments are often a requirement of Planning and BREEAM. The Building Research Establishment (BRE) document ‘Site Layout Planning for Daylight and Sunlight: A guide to good practice (2022)’ sets out the tests to be considered.
We provide analysis, design advice and reports to confirm that new developments meet planning and BREEAM requirements.
There are generally two reports that might be asked for, depending on your development:
Neighboring Properties Report
These are generally required to ascertain the impact of your proposals on neighboring buildings, with respect to daylight levels and access to direct sunlight. A BRE neighbouring properties report will typically contain the following tests:
Local Authorities sometimes require a report to confirm adequate light levels within the proposed development itself. Where site constraints exist, these can be overcome by ensuring large enough windows, limiting room depths and light coloured interiors.
A BRE within development report will typically contain the following tests:
We provide analysis, design advice and reports to confirm that new developments meet planning and BREEAM requirements.
There are generally two reports that might be asked for, depending on your development:
Neighboring Properties Report
These are generally required to ascertain the impact of your proposals on neighboring buildings, with respect to daylight levels and access to direct sunlight. A BRE neighbouring properties report will typically contain the following tests:
- Vertical Sky Component
- Daylight Distribution /No Sky Line (where room layouts are known)
- Daylight Provision (where BRE Appendix F criteria applies)
- Annual Probable Sunlight Hours
- Overshadowing to Gardens and Open Spaces
Local Authorities sometimes require a report to confirm adequate light levels within the proposed development itself. Where site constraints exist, these can be overcome by ensuring large enough windows, limiting room depths and light coloured interiors.
A BRE within development report will typically contain the following tests:
- Daylight Provision
- Exposure to Sunlight
- Overshadowing to Gardens and Open Spaces