Feedback from the CIBSE 2025 Membership Survey has revealed an increasingly global membership that is demanding deeper engagement with the Institution, and more regional guidance and resources.
The survey is a valuable opportunity to reflect on what matters most to the CIBSE community, where the Institution is delivering well, and where it can strengthen support for building services engineers across the globe.
With responses representing an increasingly diverse international membership, the findings validate CIBSE’s direction of travel, and highlight clear opportunities to increase engagement and impact.
Strong advocacy and trust
Overall sentiment towards CIBSE remains positive. Its net promoter score has risen to 35 – a level widely recognised as a strong benchmark for professional organisations. This indicates not only satisfaction, but a genuine willingness among members to recommend CIBSE to their peers. It is a powerful measure of trust in the Institution’s credibility, influence and relevance within the built environment.
An engaged global community
The survey reinforces the importance of CIBSE’s global membership. While the UK continues to represent the largest proportion of respondents, engagement from Hong Kong has increased, reflecting the Institution’s strong regional activity and investment. Members outside of the UK expressed a desire for deeper engagement, greater localisation and easier access to regional resources.
This feedback confirms the importance of CIBSE’s investment in delivering global guidance, regional e-journals and in-region support across the Middle East and North Africa, Hong Kong, and other international markets.
Member value
Members were clear about the benefit they value most. Professional recognition, particularly chartership and post-nominals, continues to be a key driver of membership.
Access to trusted technical guidance, structured CPD, and opportunities to connect through networks, societies and regional activities also remain central to CIBSE’s value proposition.
The future of the profession
Looking ahead to 2030, members identified climate resilience as the most pressing global challenge for the sector, followed by digital integration and the long-term risks posed by skills shortages. These insights closely align with CIBSE’s strategic focus on building performance, competence and future-ready engineering.
A shared commitment
The survey results send a clear and positive message: members believe in CIBSE, value its leadership and want to engage more. Their voices will remain central to how CIBSE evolves, ensuring it continues to support, represent and champion building services engineers worldwide.