Sownd Certification
The only acoustic certification for the built environment — proving spaces are comfortable, audio inclusive and compliant.
Developed with the Institute of Sound and Vibration Research (ISVR) at the University of Southampton. Operated by Sownd Affects.
The problem we solve
Most spaces are legally compliant but functionally inaccessible. Sound is overlooked — and people pay the price.
of people will leave a restaurant if the sound is too stifling.
will be less productive at work due to noise.
have a daily challenge of being noise-sensitive.
What is Sownd Certification?
Sownd Certification is the only way to prove that a space is comfortable, audio inclusive and compliant. It is grounded in human-centred design and holistic thinking, recognising that acoustics affect comfort, cognition, wellbeing and connection.
It's not about chasing perfect silence. It's about creating environments designed around how sound is actually felt — experienced in the body, not just measured in decibels.
Bronze
The physical acoustic baseline for sound comfort and compliance.
Silver
Operational controls to maintain acoustic quality day-to-day.
Gold
Full sensory environment optimisation for truly inclusive spaces.
Who is it for?
Specifiers & Consultants
Defensible, spec-ready acoustic certification for briefs and tenders.
Architects & Interior Designers
Evidence-led design standard that prioritises conversation and inclusion.
Hospitality Operators
Prove your venue is comfortable for all guests, including the noise-sensitive.
Workplace & Facilities Managers
Boost productivity by certifying acoustic comfort in offices and co-working spaces.
Property Developers
Differentiate developments with a recognised acoustic quality mark.
Education & Healthcare
Create environments where sound supports wellbeing, cognition and recovery.
How to get started
Using an approved partner
An acoustic consultant specifies treatment following the Sownd framework. An approved partner installs it. We verify and certify.
Typically 3-4 weeks
Existing treatment or non-approved product
For spaces with existing acoustic treatment. We assess, measure and certify against the Sownd standard.
Typically 4-6 weeks
Company information
Business Name
Sownd Affects
Legal Name
SOWND AFFECTS LTD
Companies House
16577658
Incorporated
11 July 2025
Registered Address
86-90 Paul Street, London, EC2A 4NE
Website
https://www.sownd.co.uk
hello@sownd.co.uk
Industry
Acoustic Certification & Audio Inclusivity
Service Area
United Kingdom
Hours
Monday-Friday, 9:00 AM - 5:00 PM GMT
Core Capabilities