The 2021 Approved Documents O, F and L are going to have significant implications on acoustics, with developers needing to check that their designs are compliant.

The 2021 Approved Doc O includes acoustic constraints to the use of opening windows to mitigate overheating. Somewhere between 30-45% of existing dwellings will not meet this constraint, therefore the implications for dwelling design to mitigate overheating will be significantly constrained by environmental noise, affecting even locations considered not to be “noisy”.

The 2021 Approved Doc F contains new technical guidance for noise from mechanical ventilation systems. Developers should therefore check that their designs are compliant. Changes to Part L encourage the adoption of heat pumps as a means of reducing energy demand, which can cause a noise nuisance, even within permitted development.

Join the Good Homes Alliance and Jack Harvie-Clark, Managing Director and Founder of industry-leading acoustic consultants, Apex Acoustics, to understand why the noise level limits are nonetheless appropriate, and what a developer needs to do to assess the noise risks and mitigation options for the design.


  • Welcome to the series – Julian Brooks, Director, Good Homes Alliance
  • The implications of acoustics for compliance with Part F and Part O – Jack Harvie-Clark, Director, Apex Acoustics
  • Q&A

Key information

Dates: Tuesday 26th April 2022

Time: 12:00-13:00

Location: Online (Zoom)


  • Free-to-attend for GHA members
  • £20 for members of GHA partner organisations*
  • £30 for non-members

*Partner organisations include: AECB, Building Performance Network, Passivhaus Trust, SuperHomes, STBA, TCPA, The Green Register, The Alliance for Sustainable Building Products, UKIEG, Woodknowledge Wales.

More about the Bitesize Webinar Series

New for 2022! – A series of bitesize webinars with industry leaders from within the GHA network, looking at the future outlook for a range of sustainability issues and low carbon solutions, including building performance, ventilation, heat pumps, overheating, airtightness and more.

GHA Bitesize Webinar Series – HEAR THIS! The implications of acoustics for compliance with Part F and Part O

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