BS8233 Noise Survey & Assessment: A Practical Guide to BS8233 Noise Assessments and Planning Permission

Posted in Acoustic Consultants News on Apr 05, 2019

BS8233:2014 set’s out appropriate internal and external noise levels for Bedrooms, Living Rooms, Dining Rooms and Gardens for the day time (07:00 – 23:00) and night time (23:00 – 07:00). It also provides guidance on the design of sound insulation for buildings and methods of achieving appropriate noise reduction for new build dwellings and refurbished dwellings undergoing change of use.

Why do you need a BS8233 noise assessment? 

When developing a residential house or flat, schools, healthcare facilities or hotels, if the development site is near to a transport noise source such as a road or railway then it is likely that during the planning permission process the Local Authority will request a BS8233 noise survey to be undertaken to ensure that appropriate internal and external noise levels can be achieved to guarantee the amenity of the future occupants. 

A BS8233 noise report can be requested at the pre-application stage of planning permission, if the Local Authority considers noise to be a high enough risk to affect the likelihood of the planning application being accepted. Or it may be conditioned under the planning permission approval. The information submitted within a noise survey report allows the Planning and Environmental Health Departments to assess the level of noise impact expected on the development and ensure appropriate protection measures are put in to place.

Ultimately, the purpose of the BS8233 noise survey is to ensure that the development is compliant with the National Planning and Policy Framework and Noise Policy Statement for England.

Typical Planning Conditions? 

Here are some examples of typical planning conditions that relate to BS8233:2014:

Example 1: No development shall commence until details of a noise assessment have been submitted to and approved in writing by the Council. The report shall include details of noise attenuation measures required to meet the standard for internal noise levels defined in table 4 of BS8233:2014 (including glazing and ventilation details). The dwelling hereby permitted shall not be occupied until the noise mitigation measures have been provided in accordance with the approved details and shall thereafter in retained in perpetuity.

Example 2: Prior to the commencement of the development, an environmental noise assessment and sound insulation scheme shall be submitted to and be approved in writing by the Local Planning Authority. The environmental noise assessment shall include the impact of any transportation noise, noise from people on the street and be carried out whilst any premises and/or activities in the vicinity that are likely to have an adverse effect on noise levels are operating. In addition, it shall include predicted noise levels for any plant and equipment which will form part of the development, octave band analysis and all assumptions made (e.g.glazing and façade areas).

The sound insulation scheme shall include the specification and acoustic data sheets for glazed areas of the development and any complementary acoustic ventilation scheme and be designed to achieve the following internal noise levels:

  • Not exceeding 30dB LAeq(1 hour) and not exceeding NR 25 in bedrooms for any hourbetween 23.00 and 07.00,
  • Not exceeding 35dB LAeq(1 hour) and not exceeding NR 30 for bedrooms and living rooms for any hour between 07.00 and 23.00,
  • Not more than 45dB LAmax(5 min) in bedrooms (measured with F time weighting) between the hours of 23.00 and 07.00,
  • Not more than 50dB LAeq(1 hour) for garden areas (including garden areas associated with residential homes or similar properties).

Example 3: No residential conversion works shall take place until a detailed acoustic report on the existing noise climate at the development site has been submitted to and been approved in writing by the local planning authority. If required, the report shall include a scheme of noise insulation measures for all residential accommodation. The noise insulation measures shall be designed to achieve noise insulation to a standard that nuisance will not be caused to the occupiers of residential accommodation by noise. The noise assessment shall be carried out by a suitably qualified acoustic consultant/engineer andshall take into account the provisions of BS4142:2014 and BS8233: 2014. The Approved scheme shall be implemented prior to the first occupation of any residential unit and be permanently maintained thereafter.

How is a BS8233 noise survey conducted? 

The aim of a noise survey is to gain a baseline measurement of the noise environment within the vicinity of your proposed development. Once the noise environment has been defined, the potential noise impact on residential dwellings can be assessed. The level of noise impact is analysed according toBS8233:2014 to ensure the future occupants will not be adversely affected by noise.

  • We will carry out an environmental noise measurements and acoustic calculations to establish the noise levels across the development site.
  • We recommend and assess appropriate mitigation measures to protect the external areas.
  • We will calculate the internal noise levels to allow the provision of appropriate glazing and ventilation specifications for the development.
  • We will provide a technical report for submission to your local authority to support your planning application

What will be in the technical report? 

The purpose of the technical report is to concisely outline to the Local Authority how ‘Good Acoustic Design’ has been implemented in the design of the development to ensure appropriate control measures are being installed. The noise survey report will outline the following:

  • A statement outlining the purpose and objectives of the report
  • A detailed review of the proposed development
  • A description of the surrounding area and the noise sources incident on site
  • The method that has been applied to assess the noise incident on site, including monitoring locations, the equipment used, calibration details, a weather summary and when the survey was conducted
  • A summary of the results pertinent to the survey which typically include, LAeq,t, LAMax,T, LA90, LA10 and 1/1 octave LZeq,t.
  • A assessment of the noise level results in accordance with the relevant British Standards
  • Recommendations and Mitigations measures required to protect the amenity of the future occupants including calculations of the expected noise reduction from the sound insulation scheme.

What Recommendations and Mitigations measures can be expected from your noise report?

The report will aim to apply all reasonable noise control measures to ensure the internal and external noise requirements of BS8233:2014 can be achieved. It is always preferable for noise to be controlled at source, however this is not always feasible. The following mitigations measures can be applied:

  • Distance Separation
  • Building Orientation
  • Screening and Acoustic Barriers
  • Building Layout and Design
  • Sound Insulation Schemes
  • Acoustic Glazing and Doors
  • Alternative Ventilation Strategies

What do you need to do? 

Once you have had your BS8233 noise survey completed and received your technical report, you will need to review the recommendations and ensure any amendments to the design of the development are clearly outlined in your site layouts, detailed plans and any other supporting documents. The report will need to be sent to the council for approval, which should be received in writing.

Following this, the responsibility then falls on the developer to ensure all the recommendations and mitigations measures are installed. Quality control and workmanship can have a huge impact on the adequate performance of noise control measures, so it is imperative to have a high standard of workmanship to ensure the correct execution of the acoustic detailing recommended.

How can we help?

We listen to our clients’ needs and present them with practical, cost-effective solutions. This means that we offer a truly bespoke acoustic consultancy service for prices that are considered among the most competitive in the industry. NOVA Acoustics Ltd places a team of highly skilled, qualified and experienced acoustic consultants at our client’s full disposable; this is combined with the latest equipment, technological insights and expert guidance and recommendation, to ensure that clients are getting a guaranteed quality service every time they decide to get in touch.

We would love to hear from you, so get in touch now!

Clients we’ve worked with

  • barnfield
  • bedford
  • barnfield
  • continental
  • essex
  • hobson
  • interserve
  • kfc
  • leicester
  • persimmon
  • puregym
  • snap
  • starbucks
  • tacobell
  • tower hamlets
  • ITV
  • Unilever
  • Sig
  • Leeds University
  • Morrisons
  • Taylor Wimpey
  • City of Stoke On Trent
  • Hambleton District
  • Calvert Trust
  • Aldi
  • Arnold Laver
  • Broadley
  • Engie
  • Gardiner Theo
  • Iggesund
  • Oxford University
  • PepsiCo
  • Richmonshire
  • Savills

Service Areas

We provide our services nationwide through our in-house network of local engineers... call to book now!

Service Map - NOVA Acoustics

Accreditations & Memberships

  • Builders Profile
  •  Institute Of Acoustics
  • SSIP
  • Construction Line
  • LABC
  • IEMA
  • HAS


- Paul Hastings

★ ★ ★ ★ ★

I engaged Nova at the outset of my project (which I recommend you do) to assist with providing a detailed material specification and installation guidance. There was always someone available to help with practical enquiries and advice...

- C.G. Henry

★ ★ ★ ★ ★

I had Adam come round to a property which i thought was beyond repair. He gave sound advice with exact details of what needed to be carried out in the most cost effective manner. Once the works were carried out he returned, tested it...

- Andrew Youngson

★ ★ ★ ★ ★

I have worked with the team at nova on a number of projects and have always been very helpful and competitively priced. Highly recommend this company for any sound test and report.

- Carol Chaplin

★ ★ ★ ★ ★

Excellent service, engineer was very informative and helpful.  Good customer service being able to speak to knowledgeable people on the telephone when making inquires about the procedure involved for the sound testing of our property...

- Bun Bar

★ ★ ★ ★ ★

Good efficient service. Recommend it to all.

Bright Construction UK Ltd

- Gavin Boby

★ ★ ★ ★ ★

Very attentive and friendly service, keen to serve the client, and absolutely not about dragging the case out for fees - will work to save the client fees, and understand the practicalities of the case and the opposition that applications...

- Ejaz Shah

★ ★ ★ ★ ★

Adam was very attentive and very professional answered all my questions and returned all calls the engineer arrived at the time agreed and again explained everything before carrying out the test , and we received our report within couple...

- Charles OKell

★ ★ ★ ★ ★

Its a tricky area and you need the right support, Paul Robinson  brought Adam's team to the table and we'll be working together again in future for sure.

- Ainsley Black

★ ★ ★ ★ ★

Although we had followed the building reg, in terms of sound insulation the property conversion still failed the sound Test. Adam was very helpful and professional and guided us to the point that when it was retested again we passed. Would...

- Robert Buchanan

★ ★ ★ ★ ★

Friendly efficient and cost effective service, without complication

- Hepple Property Care Ltd

★ ★ ★ ★ ★

Very quick service, would recommend to others

- Ian Fairbairn

★ ★ ★ ★ ★

Excellent service and communication with all the members of staff we had dealings with.  A very professional approach and attitude by all.  An experience that is refreshing within the building sector and a company I could recommend...

- Daniel Cogdon

★ ★ ★ ★ ★

Fast turn around and great service, recommended

- Allan Proctor

★ ★ ★ ★ ★

Excellent service by Adam and the team at Nova. The service they delivered was efficient, competitive and I would highly recommend them!

- Carol Richards

★ ★ ★ ★ ★

Having selected Nova Accoustics to perform a sound test on my latest project, I found the whole process completely professional, prompt & efficient .

The phone contact to set up the appointment was extremely  helpful...

- Michael Dickinson

★ ★ ★ ★ ★

Having used Nova Acoustics on several projects, I would not hesitate in recommending this company.

- Steph Openshaw

★ ★ ★ ★ ★

Fantastic service very quick and punctual highly recommended.

- Chris Bullerwell

★ ★ ★ ★ ★

Used Nova Acoustics to sound test a property we'd converted in the Newcastle area.

Excellent service from start to finish. Professional, helpful & reliable throughout...highly recommended.

- Andrew Holmes

★ ★ ★ ★ ★

Really helpful team of people and very quick service, which was greatly appreciated.

- Siying Lid

★ ★ ★ ★ ★

We are a small design firm and NOVA Acoustics provided very sufficient services to our clients with reasonable price. And they are quick to respond too.  Highly recommended.

- Floors By Design Leicester

★ ★ ★ ★ ★

Very good company, communicated all the way through.  Competitive pricing, I will be using them again in the near future.

- Stewart Greenhalgh

★ ★ ★ ★ ★

First Class, prompt professional service. I will recommend to other clients.

- Frank Kenny

★ ★ ★ ★ ★

Excellent  service so far and will be contacting them again for their services.

- Kelly Freakley

★ ★ ★ ★ ★

Fantastic service from this company at a very reasonable price, would definitely recomend....

- Robert Myers

★ ★ ★ ★ ★

I used Nova acoustics to sound test my basement flat conversion for the building control certificate

And found them to be professional and friendly. The test was done mid afternoon and I had received by six o'clock the same...

- Stephen Shaw

★ ★ ★ ★ ★

Excellent service. Would recommend to anyone needing assistance with matters arising from acoustics and noise.

- Rick Parsons

★ ★ ★ ★ ★

iKoustic have worked with Nova Acoustics for some time now and they are constantly thorough, professional and super helpful in everything they do ... They are certainly our partner of choice ... Rick

- Carl Smoult

★ ★ ★ ★ ★

Prompt, friendly, efficient, professional... would recommend and use again.

- Gary Oliver

★ ★ ★ ★ ★

As most of you reading this message are now probably aware  the difficulty of finding guidance and compliance of the part E building regulations is an arduous task. Well search no more! Adam at Nova Acoustics not only talked me through...

- Kate Whitehead

★ ★ ★ ★ ★

Speedy quote, arranging the testing & report! Seb was really friendly & efficient onsite. Highly recommend!

- David Hope

★ ★ ★ ★ ★

Came promptly at the requested time. Did the work professionally and in good time and provided the required reports so no issues or problems to report.

- Mark Girdham

★ ★ ★ ★ ★

NOVA provided a fast and efficient service. They came to carry out the sound tests on my 8 Bed HMO, which was a change of use from 4 flats. Very friendly and professional service. Mark (Hull)

- Simon Phillips

★ ★ ★ ★ ★

Excellent company, providing a professional service at a competitive price and a quick, hassle free  experience. I would recommend them to anyone.

Simon Phillips  Salisbury Poultry Ltd

- Peter Phillips

★ ★ ★ ★ ★

Excellent service from start to finish.

Highly professional team who where very accommodating to the team on site and worked exceptional well with everyone.

Having worked with other companies within the same...

- Claire Gannon

★ ★ ★ ★ ★

Excellent speedy service, Luigi was very proficient and professional at carrying out his job, a real asset to the company. Thank you Luigi. Kind Regards, Ant Mason