Passivhaus Affiliate

Standard Members

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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Karanjit Sandhu


Kate Trinder

Katie C Kavanagh


Katie Kavanagh is an architectural designer with a focus on sustainable residential design. Following 10 years working as a technical manager for private residential developers, Katie has established Moorlands Design to provide domestic architectural services to individuals and businesses in the West Yorkshire area.

Keith Renton Architect



Keri Barr Architects


We are a small Chartered Architect’s practice and are specialists in private residential work. Keri is a Certified Passivhaus Designer. We enjoy making happier, healthier and smarter spaces - with plenty of natural daylight. Our design focus is on the people, site, climate, context and materials to produce spaces that are enjoyable to use and lovely to look at. We have a keen interest in creating low-energy buildings. Whether that is an extension, refurbishment or new build.



Exeter, Liverpool, Lincoln, Cambridge

Kier is a leading provider of construction and infrastructure services. Our purpose is to deliver economic and social infrastructure, which is vital to the growth of the UK. We provide specialist design and build capabilities and with the knowledge, skills and intellectual capital of our people ensure we are able to project manage and integrate all aspects of a project. With a network of offices across the UK, Kier offers national coverage, with local delivery to deliver economic and social infrastructure. Every project we work on draws on the skills and expertise of our people. Their job is to make a positive impact on the world. Because what we achieve together in a day will have benefits that last for generations. Utilising our specialist skills, extensive local supply chains and first-class project execution, we are well placed to deliver sustainable buildings for local communities. We have extensive experience in delivering Passivhaus schemes, including St Sidwells Point and St Loyes Extra Care Home in Exeter, Bicester Business Centre, Hereford Archive & Records Centre in Hertfordshire and South West Energy Centre in Paignton.




We are developers, architects, and community enablers, specialising in net-zero carbon, Passive House homes. Our services: DEVELOPMENT & DEVELOPMENT PARTNERSHIPS: KIN develops sustainable homes and provides collaborative and turn-key development solutions. We work independently, with partners, and as an Enabling Developer for community-led housing groups. We build newbuild, rooftop, and retrofit. DEVELOPMENT MANAGEMENT: KIN provides development management services at every project stage, including for local authorities & community groups. We also provide community enabling advice. ARCHITECTURE+ & SUSTAINABILITY: KIN undertakes architectural design and sustainability services in-house for our projects, as part of our Development Management service, and as a stand alone service.


Kind & Co (Builders) Ltd


As a principal contractor Kind & Company have operated across London and the South East for over 76 years, in this time we have grown and expanded to deliver a wide range of projects across the Residential, Care, Education, Health and Commercial markets. We have an experienced and diverse team of people, each qualified to facilitate and deliver sustainable, quality buildings for our clients and the communities we build for. As well as a wide range of previous experience delivering sustainably high performing projects, utilising a variety of building methods, we are currently delivering Passivhaus certified schemes in London.





Kingspan Timber Solutions Limited


Kingspan Timber Solutions offer a range of high-performance timber systems including our award-winning Kingspan ULTIMA™ build system, Kingspan Logic Plus and our SIP system; Kingspan TEK®. We provide so much more than a timber frame, with Kingspan you’re buying our expertise, built up over 50 years. Kingspan and our sister company, Potton, have helped thousands of self-builders and developers design and build dream homes since 1964. Why not visit our self-build show centre and browse our five show homes. Our Elsworth show house is the UKs first show home built to Passivhaus standard. Submit your drawings for a quote!


Kirsty Maguire Architect Ltd


Kirsty Maguire leads an award winning eco architecture practice, delivering high performance, beautiful and practical buildings which are low cost to run, energy efficient, elegant and inspiring. The passivhaus standard forms an integral part of this. Kirsty Maguire Architect Ltd also provides training in this sector for students and professionals. Projects are run across Scotland and internationally with clients ranging from private individuals to large organisations such as the United Nations. With 15 years experience in the sector, KMA brings together experience and innovation in design and construction. The practice also works collaboratively with other industry leading specialists.


Kirsty McGhie


Kiss House


Kiss House is a range of customisable, high performance homes for the design and impact conscious self-builder and developer. Our service is all inclusive and stress free with short lead times and a fixed price. Our homes are Passivhaus certified for guaranteed quality and comfort and come in two to six bedroom options. We offer great design, a simple modern aesthetic, beautiful finishes (from a refined palette of interior and exterior options), natural materials and a wonderful sense of light and space. By adopting a process of continual improvement, we innovate new building systems and materials as we strive to raise the quality of both the homes we build and those built by others. We’re driven by the pursuit of quality because we believe home is of fundamental importance to people’s lives. Delivering great design with guaranteed quality and performance is what makes us tick. We do it to eliminate stress, uncertainty and complexity from the process of building your own home.


KJ Tait



KLH Architects



Knauf Insulation

St Helens

Knauf Insulation is the leading provider in the UK of high performance, non-combustible, sustainable Glass and Rock Mineral Wool insulation solutions. With more than 40 years of experience in the insulation industry, it is one of the fastest growing and most respected names in insulation worldwide. Manufactured using up to 80% recycled content, Knauf Insulation mineral wool solutions offer four key benefits to building occupiers. As well as thermal performance, they are non-combustible for fire safety, provide sound absorption and noise reduction for superior acoustic performance, and contribute to higher indoor air quality thanks to the Knauf Insulation revolutionary ECOSE Technology bio-based binder.