Why councils ask for a noise assessment
Local planning authorities have to consider whether a development is acceptable for the people who will live or work nearby. Noise is one of the issues they look at, alongside things like design, traffic and amenity.
A noise assessment (sometimes called an acoustic assessment or noise impact assessment) is a report prepared by an acoustic consultant that gives the council the information it needs to make that judgement.
Two broad types of situation
Most planning-related noise enquiries fall into one of two groups:
- Your project could create noise — for example plant, heat pumps, extraction systems, commercial or industrial uses, or venues.
- Your project could be affected by noise — for example new homes near a busy road, railway, airport or existing business.
What an assessment might involve
The scope varies a lot. Some projects need a desktop review and calculations; others need a site visit and noise monitoring over several days. The consultant will usually refer to relevant British Standards and national or local planning guidance.
You don't need to know which approach applies to you. That's what the consultant confirms once they understand your project and what the council has asked for.
What helps a consultant most
The more clearly you can describe the situation, the quicker a consultant can scope the work. Useful information includes:
- the exact wording from the council, planning officer or planning condition;
- your planning application reference, if you have one;
- the site address or postcode;
- drawings, site plans or equipment details;
- any deadline you're working to.
Common questions
Is a noise assessment the same as an acoustic assessment?
In everyday planning use, the terms are often used interchangeably. The exact scope depends on the project and on what the planning authority requires.
Will an assessment guarantee planning approval?
No. An assessment provides evidence for the council to consider. The decision rests with the planning authority.
Can I do the assessment myself?
Councils generally expect assessments to be carried out by a suitably qualified acoustic consultant. If in doubt, a consultant can confirm what's needed.
This page is general information, not professional acoustic or planning advice. An acoustic consultant can confirm what applies to your project.