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Indoor Air Quality

There is an increasing emphasis from policy makers on indoor air quality, and the influence this has on people’s health, wellbeing and productivity.

Our indoor air quality consultancy services include:

  • BREEAM Services for Hea 02 and Pol 02 credits
  • Health and wellbeing survey
  • Sick building syndrome investigation
  • Occupational exposure compliance
  • Building performance evaluation
  • Compliance with building regulations, planning policy and air quality standards.

Success Stories

Magna Park South, Lutterworth

Client: NSI Projects

Cass Allen was appointed to assist a client with two warehouse developments, both of which aimed to obtain Indoor Air Quality BREEAM Credit: Hea 02 – VOC emission levels (post construction).

The Air Quality team undertook on-site pumped diffusion tube sampling of Formaldehyde and Volatile Organic Compounds (VOCs) from within the office areas of the newly completed warehouses. The collected samples were analysed by a UKAS Accredited Laboratory and the results detailed and discussed in our report.

The results and reports confirmed that both warehouses met the criteria to justify the awarding of the applicable credit for BREEAM Hea 02, contributing to them gaining BREEAM Very Good status.

Latest News

Project News
14 May 2026

Cass Allen Supports Major Milestone at Coronation Square with Complex Acoustic Design

Cass Allen Supports Major Milestone at Coronation Square with Complex Acoustic Design.

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Project News
14 May 2026

Major Mixed-Use Development in Central Square, Cardiff

Cass Allen delivered an Air Quality Assessment to support a landmark mixed-use development in Central Square, Cardiff.

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Company News
14 May 2026

Welcoming back Ronny Ospina

We are delighted to welcome back Ronny to the team as a Senior Acoustics Consultant.

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Company News
25 Feb 2026

Welcoming three new faces to our technical teams

We are pleased to welcome three new team members – Finlay, Samuele, and Benedict – who each bring strong scientific and environmental expertise to the company.

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Company News
06 Oct 2025

Fresh Talent for Our Team: Christian Inman & Louis Davis

We’re really excited to welcome Christian Inman and Louis Davis to the team!

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