Sustainability for Planning
To support planning applications Eight Associates examines the impact of both the construction and operational phases on the air quality of a particular development. The impacts are compared against UK air quality objectives and/or significance criteria defined within relevant air quality guidance. Depending on the scale of these impacts the air quality assessment may also discuss the mitigation measures that will need to be adopted. For developments in London, an Air Quality Neutral statement is provided as part of the assessment. Where there is the potential for a development to have a significant impact for local air quality, or new sensitive receptors are being introduced into an area with particularly poor air quality, a detailed assessment of impacts will be undertaken, which uses dispersion modelling to determine the impact for specific pollutants at key locations on or around the development site.
Daylight and Sunlight Impact assessments calculate the impact on the daylight levels experienced by existing neighbouring amenities (dwellings, non-domestic uses, gardens, open spaces) as a result of a proposed development. The daylight impact is measured in terms of VSC, ASPH, No-sky line and daylight hours. This analysis forms an essential component of any planning application that would increase overshadowing or decrease access to natural light on an existing amenity.
Energy Assessments are the accompanying reports for planning applications for domestic and non-domestic buildings that demonstrate the proposed CO2 emissions reductions over Part L and the financial contribution for ‘zero carbon’ homes. The reports demonstrate compliance with national and local policies and regulations, thus establishing a scheme’s suitability for planning approval and ensuring the approved scheme can achieve its planning conditions at practical completion.
Whether for a residential or commercial site, planners, architects, and property developers need to understand the potential risk of flooding when designing and developing a new site. Eight Associates can assess sites to determine the risk and recommend mitigation measures to manage these risks for all stakeholders involved.
An internal daylight analysis calculates the daylight levels and distribution of the daylight inside a room, which is key tool in the design of a building’s fenestration and form. As well as ensuring the building will receive the necessary levels of daylight and maximise occupant comfort, the analysis can be used to comply with the BREEAM or LEED daylighting credits.
An LZC study assesses the feasibility of installing low and zero carbon energy technologies and quantifies the anticipated energy savings and CO2 emissions reductions. This report can be used to gain BREEAM credits and demonstrate compliance with planning requirements.
A right of light (ROL) may be acquired by ‘anyone who has had uninterrupted use of something over someone else’s land for 20 years without consent, openly and without threat, and without interruption for more than a year,’ according to RICS. Where development will have any impact on the light received by neighbouring properties it is essential that Right of Light is considered. The Right of Light assessment will calculate the book value compensation and will highlight what options there are for dealing with the resulting ROL issues.
Eight Associates develops Sustainable Urban Drainage (SuDS) Strategies to reduce the likelihood and impact of surface water flooding from new developments. This comprises encouraging the use of design measures to mimic ‘natural’ drainage by adopting techniques to deal with surface water runoff locally, through collection, storage and cleaning before allowing it to be slowly released back into the environment.
Local authorities often require Sustainability Statements to be submitted as part of the planning application. Eight Associates works with clients to develop these strategies by looking at how the development holistically meets or exceeds all local sustainability planning policy.
Dynamic simulation modelling is used to ascertain the risk of overheating and maximise occupant comfort within a building, it is also necessary to demonstrate compliance with the London Plan. The analysis aims to ‘design out’ and reduce need for active cooling as much as practically possible. Guidance on U-values, thermal mass, airtightness, shading and the optimal ventilation and mechanical services strategy can be provided by our team based on the modelling outputs.