A noise survey is an important condition of planning permission and a requirement for the evaluation of a potential noise source by environmental health officers. The Control of Pollution Act (1974) identified noise as a type of pollution with the World Health Organisation identifying the impact to health of those who are affected. The impact of noise can refer to residents and commercial premises that are situated nearby.
Noise Impact Assessments (NIA) predict the impact that noise from a development is likely to have on the surrounding area. A noise impact assessment may be requested for a residential development or a commercial premise which wants to alter their operating hours. Planning Departments at the Local Authority may require the Assessment of Noise prior to granting permission for a development or as a condition of planning.