Passivhaus Affiliate

Standard Members

Paper Igloo Ltd


We are a small flexible team currently based in Glasgow who believe that fantastic architecture should permeate every aspect of your daily life. We aim to create site-specific high quality design solutions at any scale – the spaces in which we all live and work should be sensory, exciting, inspiring, imaginative and fun. Our experience includes time spent working on site so we have a practical understanding of construction, which we believe will give you a more thorough and thoughtful solution. We are building a strong commitment to low-energy design, and one of our directors is a certified Passivhaus Designer.


Paper Project architecture and design ltd



Parsons + Whittley Architects


Parsons & Whittley is an award winning architectural practice based in Swaffham, Norfolk. The practice includes in house registered Code and Energy Assessors and believes firmly in sustainable architecture. With a team of 7 the practice is experienced in all types of buildings with a project list ranging from private residences through housing and property development, to commercial projects such as office developments and car showrooms. Currently on site with 14 Passivhaus units in Wimbish, Essex for Hastoe Housing Association, which it hopes will be the first multi unit rural housing scheme in the UK to achieve Passivhaus certification.



Co Galway


Passive House Systems Ltd


Passive House Systems Ltd have been involved in air tightness in new builds and renovations since 2008. We are proud to be the distributors of the German manufactured Gerband Rooftite system of products in the UK and Ireland. We are continuously listening to our various customer types and improving our product range to meet increased levels of air tightness and vapour control. While headquartered in Essex we provide an unrivalled service to our customers in the UK and Ireland, especially with product support and supply.


Passive Schools


Passivhaus Associates

St Andrews

We provide design, consultancy and build support services for Passivhaus and "close to" Passivhaus projects. Graham Drummond and Chris Morgan are the principals. Our first project, the Craigrothie certified Passivhaus, was completed in 2011. We are based in Fife, Scotland and are actively involved with the Passivhaus Trust Scotland Group.


Passivhaus Design Solutions


Certified designers providing specialist advice and a sustainable approach to low energy design based on Passivhaus principals.


Passivhaus Homes Ltd


Passivhaus Homes Ltd. provides a one-stop Passivhaus design-and-build service - architect, energy modeller and builder. We are trained Passivhaus Designers and Consultants, certified by the Passivhaus Institute in Germany. Working as an integrated team, we are aiming to deliver Certified Passivhaus homes at the same cost as their non-Passivhaus equivalents. Our homes are either built to the full Certified Passivhaus standard, or up to 40kWh/m2a; making it easier to achieve the UK zero carbon standard. Our homes also provide excellent indoor air quality and comfort levels, and we use low embodied energy, breathable materials wherever appropriate.


Paul Ferguson


Undertaking a refit on a Victorian End Terrace and aiming for Passive House standards. My wife and I are working closely with our architect Andrew Yates of Ecoarc to optimise the design.

Paul McAlister Architects Ltd

County Armagh

The practices’ primary focus is on the delivery of high quality, responsible architecture for clients who appreciate the benefits of top quality design and sustainable built environments. This has promoted the development of the team’s specialist skills and knowledge. In pursuit of these specialist abilities, Paul McAlister he is now the first Architect in Northern Ireland to become a ‘Certified European Passive House Designer’. The team continues to invest in training and research in order to provide bespoke services to both the private and public sectors clients. Paul McAlister Architects have now completed one of the first passive houses in Northern Ireland.


Paul Testa Architecture


We take our values of good design and fundamental sustainability to offer our clients good value, healthy, flexible and useful buildings. Architecture is all about people, and we aim to create buildings in which, above all, people enjoy living and working.


PD Consulting


PDP London

PDP London is a 120 strong London and Hong Kong based international practice, known primarily for our skilful integration of contemporary architecture within historic environments. We work across a variety of sectors, primarily existing and new residential but also extra-care, commercial, civic and mixed used developments. Our projects are developed with sound environmental principles and sustainability in mind from the very start. We focus on a Fabric First approach to building design, maximising the performance of the components and materials that form the building fabric, before considering the use of active services. This approach can reduce capital and operational costs, improving the energy efficiency and reducing carbon emissions.


Pen Y Coed Construction & Insulation


Pen y Coed Insulation are the specialists in Warmcel insulation and the pro clima airtightness system. Our teams have 15 years of experience of installing Warmcel in all types of timber frame buildings from traditional oak framing to I beam technology, extensions, social housing, to factories and schools. Pen y Coed Insulation can offer you technical and construction advice on all aspects of Warmcel insulation and airtightness solutions. Warmcel is cellulose fibre insulation made from recycled newspapers for use in timber frame walls, floors and roofs. Cellulose fibre is manufactured by milling newspapers which are then treated with inorganic salts to protect against burning and pest damage. Warmcel is installed by injection under pressure filling stud walls and roofs completely leaving no gaps or voids so the maximum insulation levels are achieved for the most cost effective sustainable insulation. Pen y Coed Insulation have been working on the latest Passivhaus projects using Warmcel and the pro clima air tightness system getting some of the best airtightness test results attained in the country. Our airtightness testing technicians can give you advice at the start of your project through to testing and certification for your airtightness test result.


Peter Morgan


phi Architects


Phi is a group of architects and designers, certified in Passivhaus Design, founded by Claire Jamieson and Sara Darwin. Phi reflects their design philosophy with Ëœsmart" architecture, sustainable and environmentally responsible design, combined with the application of Phi, the golden section, to create beautiful proportions in design. Phi is committed to cost efficient design and construction culminating in highly energy efficient solutions. Phi is an international partnership with Northern and Southern hemisphere representation, sharing knowledge for best practice details, construction and Passivhaus modelling (using the PHPP software) Claire and Sara studied Architecture & Environmental Design together at Nottingham University. Subsequently qualifying as British Architects, registered with the ARB, they have practised architecture in the UK for the last 20 years. Sharing an enthusiasm for modern residential design with sustainable solutions, they are qualified as Certified Passivhaus Designers through the Building Research Establishment Passivhaus Designer Course. Claire Jamieson is based in Yorkshire, UK/ Australia and Sara Darwin in Manchester, UK


Piers Sadler Consulting


Piers Sadler is Director and owner of Piers Sadler Consulting and is a building scientist, building energy consultant and Certified Passivhaus Designer based in Bristol. He is passionate about improving building performance through better design, construction and operation, taking a fabric first approach wherever possible. He enjoys collaborating with architects and engineers and a range of associates to develop low energy building and services designs for residential new build and refurbishment and specialist and small commercial/industrial buildings. Passivhaus design principles together with sound building science inform all his work. Piers is currently working on two Passivhaus projects and uses PHPP as a design tool to test ideas and inform cost benefit assessments across a range of other schemes. In 2015 Piers organised a Passivhaus conference in Bristol as part of Bristol Green Capital 2015.


Point 6 Projects

Devon & London

P6P have over six years’ experience of delivering certified Passivhaus homes and buildings. A company specialising in delivering high performance, low energy homes & buildings with an emphasis on Passivhaus. We work with you the client to create your dream passivhaus home in the UK. Our ethos is to provide you with 100% value through delivery, innovation & transparency. We have delivered certified Passivhaus flats and houses for both councils and private clients. Our experience with Passivhaus can save a client on both time and money. We have the skills within our team to either design and build your building or just take on the building element and work closely with your architect.


Powered Living


Prewett Bizley Architects


Prewett Bizley architects have developed a deep interest in developing into low carbon consuming buildings, either new or existing. We believe in a fabric first approach based on the rigorous approach implicit in Passivhaus philosophy. In the face of the massive carbon reductions that the UK needs to make in the next few decades, we see the activity of architects as crucially important. The AECB have shown great leadership in low carbon building and the advent of the Passivhaus trust is a significant step forward for the UK in knowledge and skill development.


Price and Myers


Price & Myers was established in 1978 in London as a firm of consulting structural engineers. Price & Myers Sustainability was set up in 2004. We are a specialist team providing consultancy and design support to enhance the sustainability of construction projects. Our range of expertise and experience is wide, working from early conceptual and feasibility stages through to post occupancy, from small refurbishments to large scale master planning. We have worked on over 400 projects providing high level consultancy with respect to low energy design and Part L compliance, renewable energy feasibility, BREEAM, CSH, Passivhaus and SKA.

Probuild Ltd



PRS Builders


PRS Builders is a dynamic firm of professional building contractors operating across Greater London and the South East of England. Established in 2006, we are fully participating members of the Federation of Master Builders, Passivhaus Trust and AECB the sustainable building association. We offer a complete turn-key package, providing fully insured project management services delivered by our team of accredited professionals. This means that we always achieve the design, no matter how complex or challenging. Our specialties are architect driven projects. Especially “Passive House,” the global leading environmental build system in which we have acquired an industry leading reputation. Our portfolio includes a number of completed projects, and many testimonials from clients and our architect project partners that endorse the quality of our work.