Membership of ISA

Our current members include some of Europe’s largest corporations, developers, property owners and investors with worldwide interests, as well as international organisations.

The International Sustainability Alliance is an independent not for profit company owned by the BRE Trust.

Day to day running of the organisation is coordinated by the ISA Governing Council and various Task Teams, each chaired by a member of the Governing Council.

Membership Fees

Membership details are available by clicking here.

How to become a Member

If you would like to apply for membership to the International Sustainability Alliance, or would like further information on our organisation, please contact: 

Once your request has been received a member of our team will contact you.


T: +44 (0)1923 369080