Noise Impact Assessments
Walnut Acoustics provide clear and understandable noise impact assessments to support applicants, planning consultants and architects throughout the planning process.
Let’s hear about your projectNoise impact assessments determine whether a proposed development will generate unacceptable levels of noise. Our assessments:
Evaluate noise impact from industrial sites, transport, and commercial developments.
Provide detailed reports to support planning applications using BS 4142 methodology
Work with local authorities to establish acceptable noise criteria
Provide mitigation strategies to reduce noise levels and meet required criteria
Our detailed, easy-to-understand reports and noise mitigation strategies help applicants to progress their proposals through the planning process.
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Our Noise Impact Assessment Process

Free Consultation
We begin by discussing your project proposal, relevant guidance and requirements, and potential noise concerns to determine the best approach to producing your Noise Impact Assessment.

On-Site Noise Measuring
Our consultants conduct precise noise measurements using precision-calibrated sound level meters, capturing both noise levels at the proposed site and noise levels from existing operations where required.

Data Analysis & Noise Mapping
Using industry-leading noise software, we analyse the data measured and assess how noise from the proposal will impact on the nearest residential receptors.
This often includes using noise modelling software (SoundPLAN) to be able to predict noise levels at multiple receptors.

Reporting & Recommendations
You’ll receive a detailed yet easy-to-understand report outlining key findings, presenting the noise impacts and recommended mitigation measures to reduce noise impacts where necessary.
Our reports are designed to be clear and understandable to provide effective support for your planning application and to satisfy noise conditions when they are stipulated in planning approvals.
Noise Impact Assessment Use Cases

Industrial & Commercial Developments
Evaluate noise generated by noise sources at new or re-located factories, auto repair centres, aggregates, transportation businesses, supermarkets and other developments.
Prepare robust noise impact assessments and mitigation solutions for planning proposals and submissions.
Our assessments help developers and business owners demonstrate regulatory compliance, avoid planning delays, and implement effective noise control measures.

Energy Sector – Solar Farm and BESS Projects
Determine how noise from proposed Solar Farm and BESS projects will affect the nearest residential areas and advise on effective mitigation strategies including layout design and required plant noise levels.
Our assessments help developers and planning consultants address noise concerns early in the planning process and present proposals that aim to meet local authority and EHO criteria, minimising revisions and delays in planning.

Entertainment & Hospitality Venues
Assess and advise on noise impacts from pubs, bars, nightclubs, and event spaces to ensure compliance with current guidance and local environmental health criteria.
We provide mitigation and noise management plan solutions to help businesses meet noise limits, prevent complaints, and maintain a good relationship with local authorities and the community.

New Residential and Mixed-Use Developments
Assess the impact of mechanical plant (usually HVAC) and other new noise sources associated with a proposed development to ensure future and existing residents experience acceptable noise levels.
Our assessments are based on the relevant and most current guidance and methodologies (e.g. BS 4142 and BS 8233), ensuring compliance with local authority requirements and helping applicants to reach their planning goals.
Get in touch to discuss your specific requirements.

Why Walnut Acoustics?
With over 20 years of experience, Walnut Acoustics delivers bespoke noise and acoustic consultancy solutions tailored to meet your planning needs. Trusted by our clients, we produce the necessary information in a timely manner to help achieve successful planning applications.
Learn More About UsWhat Our Clients Say
Nick is extremely engaging and professional, he delivers nothing but high-quality advice. My experience with Nick and the team involved the preparation of a noise impact assessment which greatly helped to resolve a long-standing issue we were dealing with. Truly worth every penny.”
His service was nothing short of outstanding, and he guided and advised us every step of the way. We wouldn’t hesitate to recommended his services and would happily use Walnut Acoustics for our next project – Fantastic.”
We are extremely grateful for all the advice and assistance that was provided. I would recommend Walnut Acoustics without any hesitation. Nick, the acoustic consultant, was very professional and provided an excellent level of customer service.”
A quick response, knowledgeable and reliable consultants, comprehensive and understandable reports. I wish all my partners had the same level of professionalism and service delivery. Well done, Walnut Acoustics.”
Our Technical Expertise
We cover all the key noise standards, including BS 8233:2014 and BS 4142:2014+A1:2019, while also working with a wide range of other guidance and methodologies.
We use industry-leading software tools, including SoundPLAN, INSUL and high quality sound measuring equipment from Cirrus Research and Svantek to acquire robust noise data for our noise assessments.