During the planning process for new residential properties, it is common to have a planning condition from the Local Planning Authority, to ensure the internal noise levels meet the requirements of BS8233:2014, meaning you will require a noise assessment. The external noise environment in the proximity of the proposed development is impacted on heavily by noise sources such as road traffic, rail traffic, industrial and commercial.
An Environmental Noise Impact Assessment will normally involve a number of microphone positions externally, for measurement over a representative time period. A report will then be provided detailing the process of the survey, measurement data taken and recommendations moving forward to achieve the requirements of BS8233:2014.
It is key to measure these external noises, to enable building façade specifications with specific reference to glazing and ventilation, to be created to ensure the internal noise level targets are achieved.