Occasionally called Right-to-Light evaluations, a BRE daylight, sunlight and overshadowing assessment should follow the guidance set out inside the Building Research Business doc ‘Site Layout Planning for Daylight and Sunlight: A Guide to Good Practice (2011)’.

Within thickly populated areas such as London or other important towns, or merely when a new advancement is in the close vicinity to existing attributes; many Local Authorities may request signs that the surrounding buildings is not going to be adversely affected by the proposed development.

To this end, numerous daylight and sunlight computer designs can be modeled to determine whether the natural sunshine obtained together with the prevailing qualities will be affected by the new development. These include:

• Obstruction Angle Evaluation

• Perpendicular Sky Component

• No Sky Line / Daylight Distribution inside every room

• Annual Likely Sunshine Hrs Received

• Overshadowing to any neighbouring Gardens or alternative Open Spaces

Figure 1 - Obstruction Angle Test for Existing Properties

Normally for BREEAM purposes or for another preparation requirement, Local Authorities will usually also obtain that the proposed development itself will get a satisfactory amount of natural light. A pc model may also be built for the brand new improvement itself and a number of simulations also can be run. Included in these are:

• Vertical Sky Component

• No Skyline / Sunlight Distribution within every room

• Annual Likely Sun Hours Received

• Overshadowing to other Spaces or any Gardens

• Room Depth Standard

• Typical Sunlight Variables

• Climate Based Daylight Modelling

Figure 2 - Vertical Sky Component Test for Proposed Developments

Should you're looking for right to light or day evaluations performed on your development, Ecodraw Sustainability Engineers and Energy Assessors are specialists in performing Day Light, Sunlight and Overshadowing assessments in compliance with all the Building Research Business file ‘Site Layout Planning for Daylight and Sunlight: A Guide to Good Practice (2011)’.

Ecodraw can supply daylight design guidance and evaluations on both fresh improvements and any present encompassing properties which will be accepted by all Neighborhood Regulators during the UK.