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Membership of the Passivhaus Trust is open to anyone and does not necessarily imply achievement of the Passivhaus standard for buildings or components, or attainment of Passivhaus-related qualifications. Members of the Passivhaus Trust listed include architects, consultants, contractors, manufacturers and other industry professionals, as well as individuals, who support the work of the Trust in promoting the Standard in the UK.

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Ulster University


Ultimate Coatings ltd


Ultimate Coatings Ltd. specialise in job site preparation and application of high-performance airtight coating systems. We work closely with clients and design teams to deliver the most effective system for their projects, including airtight coatings, sheet membranes and airtight tapes. Our trained applicators complete interior and exterior coating for projects of almost any size, from private homes to large building developments. We provide national coverage of the UK and are Achilles accredited tier 1 contractors, certified to ISO 9001 and ISO 14001 standards.




Based in Manchester, URBED (Urbanism Environment and Design) Ltd is an award-winning design and research consultancy. Since we were founded we have been exploring how environmental sustainability can be applied to urban areas at masterplan and building scale. We believe in creating healthier communities and enabling good design. We have developed expertise in deep low-carbon retrofit to support this. We are a worker cooperative, with our values are reflected in the work we undertake, engaging in participative design and working collaboratively. Clients range from community organisations, charities and public bodies to housing associations and private developers.