The new edition of this highly regarded BRE guide has been fully revised and updated. It gives advice on site layout planning to achieve good sunlighting and daylighting both within buildings and in the open spaces between them. This authoritative advisory document is widely used during the planning and design stages of building development in the UK and Ireland. New material in this edition covers dense urban areas, trees and hedges. Intended for use in conjunction with the British Standard Code of Practice for daylighting, the guide contains guidance on site layout to provide good sunlighting and daylighting within a new development; safeguarding of daylight and sunlight within existing buildings nearby; and the protection of daylighting of adjoining land for future development. A special section deals with passive solar site layout. Guidance is also given on the sunlighting of gardens and amenity areas. Issues like privacy, enclosure, microclimate, road layout and security are also reviewed. The appendices contain methods to quantify access to sunlight and daylight within a layout.