New Construction / UK / 2014 / 09-Pollution /

Pol 05 - Reduction of noise pollution

Information correct as of 5thDecember 2020. Please see for the latest compliance information.

Associate membership of the Institute of Acoustics - KBCN00064

Associate membership of the Institute of Acoustics (IOA) is not sufficient to demonstrate that the individual is a member of an appropriate professional body, to meet the requirements of a suitably qualified acoustician (SQA). The following is stated on the IOA website about Associate Membership; 'this class of membership is aimed primarily at persons who have obtained the appropriate academic qualifications for the grade of Member but who do not (yet) have the relevant period of experience in the profession for the grade of Member.'  
13/01/2020 Wording clarified and confirmed applicability to Issue Pol 05
06/01/2020 Clarification that this applies to BREEAM UK NC2018

Campus with multiple building assessments - KBCN0597

If a campus development project has multiple building assessments being built in conjunction with each other, each building should be assessed independently.  Where there are noise sensitive buildings; including any new buildings in the process of being built, the criteria requirements must still be met.

Compliant attenuated noise levels - KBCN00047

BS 4142 noise level requirements can be used to demonstrate compliance provided the best practice testing methodologies for noise attenuation outlined in BS 7445 are followed.    

Extension using existing building services - KBCN0914

When assessing an extension, which is served by existing building plant, the existing plant, should be considered as contributing to the existing pre-development background noise level. Any additional plant or changes to the operation of the existing plant should be considered as a new noise source. This Issue seeks to address any increase in background noise levels which result from the assessed development.
22/02/2018 Wording amended to clarify how existing plant should be considered
Superseded wording: Existing building services serving a building extension have to be included in the assessment of this issue. Issue Pol 05 is applicable to all treated buildings, even where existing building services are used for an extension building, without being upgraded. The issue assesses the impact on any nearby noise-sensitive buildings of existing and newly specified plant and the effectiveness of any fabric measures to reduce this.

No external plant specified - KBCN0931

Where there is no external plant specified and the acoustician confirms that there is no significant noise source, it is acceptable for the acoustician to provide a formal statement in lieu of the noise impact assessment. All other evidence for this issue must be provided as listed in the Evidence table. The formal statement should be produced by a 'suitably qualified acoustician' (as defined in the Relevant Definitions for this issue) and should justify this approach with reference to the specific internal plant to be installed and the proximity of any noise sensitive areas or buildings. The statement must explain clearly how the aim of the issue is being met.

Post construction noise level testing - KBCN00043

Noise level measurements do not need to be taken at the post construction stage if the acoustician has accurately modelled the noise level from the plant, using manufacturer's literature, and site measurements taken at the design stage. Any attenuation measures specified by the acoustician in their report must be confirmed as being present post construction. If the acoustician has been unable to model the noise level accurately, post construction measurements are needed to demonstrate compliance. Calculations and recommendations from the acoustician are relied on to be accurate and in keeping with best practice; attenuation measures are assumed to be specified and installed correctly.   

Temporary power solutions in noise impact assessments - KBCN0171

Plants such as standby generators that are only used temporarily are excluded from the noise impact assessment.
Information correct as of 5thDecember 2020. Please see for the latest compliance information.