The new BS 40102-1:2023 standard provides a benchmark for assessing indoor conditions across five critical aspects:
Each of these five aspects is monitored either continuously throughout the year, or via two-week measurement periods in each season. This ensures that seasonal variations are captured. Results are then benchmarked, scored, and combined into a single IEQ score.
Results are benchmarked, scored, and combined into a single IEQ score that reflects the overall quality of your indoor environment.
| Level | Band | Total % Score |
|---|---|---|
| 1 | Outstanding | >90 |
| 2 | Excellent | 81-90 |
| 3 | Very Good | 71-80 |
| 4 | Acceptable | 56-70 |
| 5 | Poor | 41-55 |
| 6 | Very Poor | 30-40 |
| 7 | Unacceptable | <30 |
Healthier, more comfortable environments that support wellbeing and productivity.
Demonstrate commitment to staff wellbeing, reduce absenteeism, and boost performance.
Gain clear performance metrics to guide maintenance, upgrades, and compliance.
Embed IEQ principles into new builds and refurbishments, enhancing user comfort.
Increase asset value and marketability by evidencing building performance.
Improve learning environments and outcomes for students and staff.
Enhance patient recovery and staff wellbeing with better-managed indoor environments.
Support health, sustainability, and ESG goals while improving usability.
By adopting BS 40102-1, organisations can quantify IEQ and ensure their spaces consistently support health, comfort, and productivity.
Define your assessment needs and building areas.
Deploy calibrated sensors and conduct detailed inspections.
Compare findings against BS 40102-1 criteria, with scores for each domain.
Calculate the combined IEQ score to determine your building’s banding level.
Provide clear, prioritised actions to improve IEQ.
Continuous monitoring and annual reassessments on an annual basis.
Our experienced consultants have completed the BRE Academy BS 40102-1 IEQ in Practice training course to provide assurance on their knowledge and skills.
Contact us today to discuss how BS 40102-1 assessments can enhance your building’s performance and occupant wellbeing.
An air quality assessment and development of a ventilation scheme for a proposed residential and office development
A ventilation strategy for the redevelopment of a residential property in W13
How can we add value to your project? Is there something we can help you with?
London: 0203 176 7909 Hove: 01273 696 887 Manchester: 07711 009 794 [email protected]
