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Guidance

 

Acoustic Design & Guidance Overview


Effective acoustic design plays a critical role in the delivery of high-quality, fit-for-purpose developments. In many cases, it is not only considered best practice but is also a statutory or contractual requirement, typically involving compliance with established acoustic standards and guidance.


Hart Sound & Air Testing brings extensive experience across all aspects of environmental noise and building acoustics, offering expert planning and design advice for a wide range of development types. While some projects may demand bespoke acoustic specifications, most follow well-established guidance documents.

Early engagement with an acoustic consultant is strongly advised. Input during the early RIBA stages allows for the identification of key design risks associated with construction methods, material selection, and spatial layout. This proactive approach facilitates the definition of appropriate acoustic performance targets and supports a coordinated and effective design strategy.


Key Acoustic Guidance Documents

Building Bulletin 93 (BB93)


Applicable to: Schools and educational buildings

BB93 sets out mandatory acoustic performance standards for schools under Part E (Regulation E4) of the Building Regulations 2010. Compliance is typically demonstrated by achieving the criteria in Building Bulletin 93: Acoustic Design of Schools – Performance Standards (February 2015).
While BB93 is mandatory for new-build schools, it is also commonly referenced in refurbishment and higher education projects. It covers:

  • Internal sound insulation
     
  • Ambient noise levels
     
  • Room acoustics
     
  • Rain noise
     

British Council for Offices: Guide to Specification (2019)


Applicable to: Office developments

The BCO Guide provides recommended acoustic criteria for Category A office fit-outs, including:

  • External noise intrusion
     
  • Noise from building services
     
  • Floor and partition sound insulation
     

Although general benchmarks are included, the BCO encourages tailored acoustic strategies to suit tenant requirements. The guide also addresses the challenges of open-plan offices and exposed services.
BREEAM-certified offices may target Hea 05 credits using BS 8233:2014 or specifications defined by a Suitably Qualified Acoustician.


Health Technical Memorandum 08-01 (HTM 08-01)


Applicable to: Healthcare environments

HTM 08-01 outlines acoustic standards for NHS healthcare facilities, recognising the importance of sound control for patient privacy, dignity, and wellbeing. The document addresses:

  • Sound insulation
     
  • Room acoustics
     
  • Ambient noise levels
     
  • Building services noise
     
  • Vibration control
     
  • Speech intelligibility (public address systems)
     

Applicable to both new-build and refurbishment projects.


Approved Document E


Applicable to: Residential developments

Part E of the Building Regulations 2010 sets minimum acoustic performance standards for dwellings and other residential buildings:

  • Regulation E1: Protection against noise between dwellings – requires on-site testing of airborne and impact sound insulation.
     
  • Regulation E2: Protection within dwellings – applies to internal elements; assessed through design, not testing.
     
  • Regulation E3: Control of reverberation in communal areas – addressed through design-based acoustic absorption strategies.
     

Relevant to new builds and material change-of-use projects (e.g. apartments, hotels, student housing).


BS 5228-1:2009 & BS 5228-2:2009


Applicable to: Construction sites

These documents offer practical guidance for managing construction noise and vibration under the Control of Pollution Act (Section 60). They include:

  • Noise and vibration assessment methodologies
     
  • Source data for common construction equipment
     
  • Recommended noise limits
     
  • Best Practicable Means (BPM) for noise mitigation
     

BS 8233:2014


Applicable to: General building acoustics

BS 8233 provides design guidance on indoor noise levels and sound insulation for various building types. Although not a statutory standard, it is widely adopted by planning authorities and often used to:

  • Set internal noise criteria
     
  • Inform acoustic design for dwellings, hotels, offices, etc.
     
  • Support related guidance (e.g. BB93, BCO)
     

BREEAM – Acoustic Assessment


Applicable to: Sustainable developments

BREEAM assessments include two key acoustic criteria:

  • Hea 05: Evaluates sound insulation, ambient noise, and room acoustics to enhance occupant comfort.
     
  • Pol 05: Addresses external noise pollution using BS 4142:2014 to minimise environmental impacts.
     

Targets are drawn from relevant national standards such as BB93 and Approved Document E.


BS 4142:2014 + A1:2019


Applicable to: Industrial and commercial sound impact

This standard provides a methodology to assess the impact of industrial and commercial noise on nearby residential areas. Common uses include:

  • Assessing new or modified noise sources
     
  • Supporting planning applications
     
  • Investigating noise complaints
     

It offers a robust framework for determining the potential for adverse effects.


BS 7445 (Parts 1–3)


Applicable to: Environmental noise assessment

This three-part standard provides procedures and descriptors for measuring and evaluating environmental noise. It supports:

  • Assessment of single or multiple noise sources
     
  • Cumulative impact studies
     
  • Establishment of acceptable noise thresholds
     

It is widely used by consultants and regulators for environmental noise evaluations.


ProPG: Planning & Noise (2017)


Applicable to: Residential planning applications

ProPG offers a systematic approach for assessing and managing transportation noise in new residential developments. Developed collaboratively by acousticians and planning professionals, it:

  • Supports evidence-based planning decisions
     
  • Encourages early-stage noise risk assessments
     
  • Promotes design quality and regulatory compliance
     

Hart Sound & Air Testing applies ProPG guidance rigorously across all applicable residential schemes.

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