Passivhaus Affiliate

Members: Other Consultants

Accredited Passivhaus Design

Buckhurst Hill, Essex

Thinking of a new Passivhaus or EnerPHit retrofit? Accredited Passivhaus Design are enthusiastic about creating attractive buildings that are space efficient, comfortable to be in, contribute to their surroundings and use little energy. We use the Passivhaus method as it is proven in design and on site. Our Certified Passivhaus Designer has over 25 years' experience of creating housing for individuals, social landlords and care providers, from masterplanning to detail design. We can work with other architects and can provide construction stage energy calculations and working drawings for contractors. We can take you through the design, planning and construction stages of creating something seemingly impossible - Really comfortable, attractive buildings that cost very little to run. Our website can tell you more. Accredited Passivhaus Design is a trading division of the Tooley & Foster Partnership.




Adams:Scott is a low energy building design and construction consultancy with a collaborative approach. We work with architects, developers and self builders to design and construct very low energy and comfortable buildings.


Alan Clarke


Alan Clarke is an energy consultant and building services engineer specialising in low energy and passivhaus buildings.

Alchemilla Architects Ltd


Alchemilla Architects Ltd is a RIBA Chartered Practice based in rural Somerset in the Blackdown Hills. Our work ranges from single houses and small housing estates to extensions and refurbishment projects. A development of high end holiday lets, a conversion of a listed building to offices and a swimming pool are part of our current workload. We see architecture as integral to the built environment, and pride ourselves in providing a full service from inception to completion. Part of this is a strong commitment to energy efficient buildings with our principal architect being a certified Passivhaus Designer.



Milton Keynes

Altechnica is a Zero Carbon / Super-Passive Solar Architecture, Technology Innovation and Renewable Energy Consulting practice established by Dr Derek Taylor in 1990 to carry out commissions, research and projects. Altechnica reviewed renewable energy potential in Uttlesford, Merton BC and in Kent. They are currently the architect/renewable energy consultant for a Super Passive Solar™ Zero Carbon House in West of England, which combines zero carbon design with innovative technologies to achieve one of the most energy efficient houses in the UK, designed to achieve PassiveHaus standards. Altechnica is developing a family of innovative Altechnica Zero Emissions Dwellings™ intended to result in zero emissions of CO2 and to obtain practically all of its energy requirements from building-integrated renewable energy and require no space heating.


Baker Ruff Hannon LLP


Baker Ruff Hannon was established in 1979 and provides project management, cost management and associated services. The majority of our projects are in social housing and we work with a number of organisations throughout the South West in this regard. We are currently engaged in a small Passivhaus scheme with one of our Clients and we are trying to encourage other providers to adopt the criteria to achieve environmental and economic benefits for their tenants. Our Partners have been engaged in the development of a Passivhaus swimming pool in the United Kingdom, which is a new if not unique concept.



Bere:architects is one of the UK’s foremost Passivhaus practices and pioneers of ecological and environmental design. Founded by Justin Bere, the practice has won numerous design and sustainability awards and completed the first certified Passivhaus non-domestic retrofit in the UK, London’s first Passivhaus and two low cost, social housing, certified Passivhaus homes in south Wales. In 2012 bere:architects won the BRE’s competition to build Passivhaus housing on their Watford Innovation Park, is working on several new builds and retrofits to Passivhaus standard and is peer reviewing a new low energy library at UEL. Research through UK Government funded Technology Strategy Board monitoring and independent cost analysis work, and the sharing of these findings through presentations and publications, is a vital and integral part of bere:architects’ work.




Project and Design Management for £20-200M projects. Designed and built the first certified PassivHaus in education sector in the UK. Experienced in a wide range of sectors: residential, hotels, laboratories & offices. Specialist in energy efficiency and offsite production (DfMA).

Buckrose Ecological Architects


Build Collective


Build Collective is a bespoke engineering consultancy with a flexible and nimble approach to civil and structural engineering design. We enjoy working with steel, concrete, timber, masonry and glass to provide excellent and efficient engineering solutions to the diverse problems posed by new and existing buildings, landscapes and structures. We are passionate about environmental sustainability and low-energy building design. We strive to bring our experience in this area to all projects we are involved in, from Certified PassivHauses to standard Building Regulations buildings.


CBG Consultants



Cocreate Consulting


Cocreate are an accredited Passivhaus Certifier. We can help you achieve the Passivhaus standard and provide design advice to help architects, developers, and engineers improve the comfort and reduce the environmental impact of buildings over the long term - saving on operating and asset costs in the process. We help clients set the right specification, help contractors achieve the required standards, and offer training to professional teams to build understanding and improve decision making.


Conker Conservation Ltd


Chartered building surveyors specialising in sustainable design, new-build, conversions, refurbishment and historic building conservation. A family business established in 1999 with experience in using modern and traditional methods of construction including rammed chalk, rammed earth, straw bales, timbrel vaulting (creating large span domes without formwork using clay tiles), super-insulated masonry and timber frame. Working with Passivhaus standard since 2005. We work mainly in the south east on residential, commercial and education projects. We are nuts about sustainability.


David Cameron


David Edwards: Architectural & Energy Services


David is a freelance architectural consultant and researcher based in London. He studied architecture at Centre for Alternative Technology and is a Certified Passivhaus Consultant. He has experience in architectural practice across a number of sectors and provides consultancy in energy modelling using PHPP and thermal bridge analysis. He collaborated with Good Architecture on the 2012 BRE UK Passivhaus Competition (awarded runner-up) and has been a guest tutor at UCL and UEL in London. David is developer of "designPH" for the Passive House Institute; a plugin for Trimble SketchUp that will provide a 3D visual interface to PHPP. This was first presented to the 17th International Passivhaus Conference at Frankfurt in April 2013.

Design Engine Structures



Dragon Renewables

Stocking Green

Jonathan Cooke t/a Dragon Renewables. MCS and PH accredited Consultant. We have experience in designing hot water and heating systems for Passivhaus and non-PH buildings. We design and install solar thermal, solar PV, biomass boilers,(chip, log and pellet) stoves with back boilers. Ground Source and Air Source Heat pumps integrated with underfloor heating.


e-Griffin Consulting Ltd

St Neots

Irrespective of whether you are a housing association, hotel or manufacturing company building a new factory with a multi-million pound budget or a home owner with a £100,000 extension, our passion and expertise is always focussed on keeping your building costs under control and on budget. e-Griffin Consulting, Chartered Quantity Surveyors, work for clients in local government, industry , retail, schools, architects, developers, hospitality, health and leisure, charities to name just a few, plus homeowners providing unbiased full building estimation and cost analysis service for new construction and renovation work. We also specialise in providing Quantity Surveying services for Passivhaus construction. The e-Griffin Construction Cost Calculator which can be accessed from provides accurate estimates free of charge for anyone wanting to know "What are the likely building costs?" This calculator enables you to make important decisions at the conceptual design stage of your project before any plans have been drawn up.


Eco Design Consultants Ltd

Milton Keynes

Eco Design Consultants are an award winning Architectural Practice, lead by Alan Budden who is a Chartered Architect and European Certified Passivhaus Designer. Our ethos is to provide FUN enjoyable buildings that are highly comfortable, inherently low energy by, using its form and fabric intelligently so to insure world resources are maintained for our children. We have a number of low energy projects including new build housing, retrofit and extension of houses and community buildings. Our services also include: Architectural design, code for sustainable homes assessments, OC EPCs, LEED assessments, Renewable energy feasibilities, home energy surveys and providing CPDs.


Eight Associates


Eight Associates is a sustainability consultancy with a focus on delivering sustainable buildings, both in the UK and abroad. Our fully accredited team of professionals has unparalleled experience providing consultation and advice on building performance analysis. We provide a range of services related to site specific modelling of energy efficiency, thermal performance, daylighting, feasibility studies for low/zero carbon energy sources, thermal comfort and overheating, thermal bridging, condensation risk and PassivHaus. Eight Associates focuses on dialogue, technical expertise and working with the team to ensure that cost-effective, sustainable solutions are achieved for each of our projects.


EZ Design & Construction Ltd


E Z Design and Construction Ltd is founded by Erdal Zorbozan, degree qualified construction professional with a special interest in Passivhaus, passive design, environmental analysis and design, low energy, comfortable, sustainable building design and engineering


Fadsha Energy Ltd


Fielden Ltd


Passivhaus designer


Four Walls


A multi-disciplinary practice that specialises in building performance evaluation, spanning from single project technical support through to industry-wide research. Four Walls aims to effect positive change in building practices and standards; to help close the performance gap between the predicted and actual energy use; and to help ensure the built environment is a healthy place for people.


Frazer Garner Associates Ltd


Frazer Garner Associates was established April 1996 as a family practice to provide predominantly employers agent services to developers, housing association and local authority clients across the South/South West of England. We are currently working with one local authority on a Passivhaus scheme of 3 units. We understand on a number of further projects we are working on with this client that they may be seeking for these to also be constructed for Passivhaus standard and we will be actively encouraging our other social housing clients to meet Passivhaus Standards.


GM Moore & Associates


G M Moore & Associates were established in 1985. We provide planning, architectural design and technical services. We specialise in the conversion of disused agricultural barns and industrial buildings. Incorporating, where feasible, the latest effective sustainable systems and products. The practice also plan and design post-modern eco friendly sustainable bespoke dwellings with a strong reliance on Passive House standards. We take great care to ensure projects fully cater for our clients needs and budgets.


Green Building Store


Green Building Store is a manufacturer and supplier of cutting edge sustainable building products. As well as offering a wide range of Passivhaus products ( including MVHR, windows, wall ties and airtightness products), Green Building Store also now offers Passivhaus training, construction and consultancy services. Its construction division – Green Building Company – recently built the Denby Dale Passivhaus – the UK’s first cavty wall Passivhaus. To get cavity wall to perform to Passivhaus standard the team had to develop many original design details, especially around junctions. These details are outlined in various free resources available from Green Building Store’s website, including a technical briefing and film on the project.


Green Footsteps


Diane Hubbard of Green Footsteps is no ordinary air tightness tester. In addition to being a member of the iATS Competent Person Scheme for the airtightness testing of domestic and non-domestic buildings, she is also a CEPH Consultant and CEPH Tradesperson. Diane is an academic author on the energy consequences of unwanted air movement in existing buildings and has a passion for sustainable building, led by her MSc (Centre for Alternative Technology). With a wealth of experience with new and existing buildings, Green Footsteps offers a value for money Passivhaus air tightness testing service across Northern England and Southern Scotland.


Green Peaches CIC


Green Peaches is a Social Enterprise that provides Energy, Environmental and Waste Management services. Energy related work includes; Passivhaus consultancy, ESOS compliance assessments, CMVP for energy interventions, domestic and commercial EPCs and Well standard consultancy. Environmental related work includes; Auditing, awareness training and Environmental Health consultancy. Waste related work includes: Auditing and awareness training. The company has a CIC social statement and that is to help other non-profit organisations with subsidised or free services. It carries out voluntary services to the CORE group of Essex Local Authorities and the Essex and Suffolk Energy and Environmental Management Group.

Greenbox Associates Ltd


Greenbox Associates Ltd is a low energy building design consultancy which supports architects and designers to deliver low impact, low energy and highly comfortable buildings. As specialists in Passivhaus and certified designers, assistance can be given in developing a highly performing building envelope to achieve Passivhaus, higher levels of the Code for Sustainable Homes and Zero Carbon Homes compliance.


Greengauge Building Energy Consultants

Bradford on Avon

Greengauge is a building & engineering consultancy specialising in sustainable, low energy design. Physics and thermal dynamics drive our philosophy and we approach our projects ‘Fabric First’ to deliver buildings that are comfortable, simple and efficient. We work on new-build and existing buildings optimising insulation, fenestration and thermal bridging to produce robust buildings with minimal systems necessary to maintain comfort. We are completely independent of manufacturers, products and installers so can provide objective advice, backed up by a suite of software tools and research.


Greenheart Sustainable Construction Ltd


Greenheart have been building beautiful, sustainable homes as principal or main contractor for over twenty years. From domestic extensions to groundbreaking newbuild Passive Houses, each project is unique and built to the highest standards. With a solid reputation in the Bristol area for excellence in green building, we place emphasis on training our workers and clear communication with clients.


Greenlite Energy Assessors


Greenlite Energy Assessors were founded in 2014 and provide computational modelling services to the construction industry. These services include dynamic thermal modelling, overheating risk analysis, daylight modelling and Part L compliance. We are CIBSE Low Carbon Consultants and Level 5 Low Carbon Energy Assessors. Works to date include a wide range of industry sector building types, notably including the Passivhaus University of Nottingham RAD building. The extensive work undertaken on the RAD building project helped to ensure that the targeted thermal comfort performance metrics were met and also aided with Passivhaus design and certification processes.


Hawton Mead Sustainable Design


Hawton Mead provides a complete range of sustainability services for homeowners and professionals, from energy assessments, advice and information, to in-depth consultancy, training and support. With a unique mix of in-depth technical know-how and creative design skills, we don’t just make buildings more energy-efficient and environmentally friendly: we also make them more comfortable and practical. Based in Brighton, Sussex, we specialise in housing and mixed-use developments, new and old, including heritage properties. Our multidisciplinary team is led by Maria Hawton-Mead, an experienced and highly-qualified sustainability consultant. We offer a professional but friendly working relationship, developing tailor-made solutions to suit individual circumstances and budgets, with Maria’s experience of retrofitting her own home giving her added insight into the client’s perspective. We firmly believe that the best route to long-term sustainability is to maximise energy efficiency, though we also have wide-ranging expertise in renewable technologies to meet residual needs. As a certified PassivHaus consultancy, we design and assess homes using the PassivHaus principles and planning package, as well as delivering continuous professional development (CPD) training in PassivHaus design.


Highland Passive

Fort William

Highland Passive help self-builders, architects and design teams to meet the rigorous international Passivhaus standard on both new-build and retrofit projects, helping you to live in a cosy, healthy, cheap-to-run home. Highland Passive is run by Es Tresidder. Es is a certified Passivhaus and AECB Carbonlite Retrofit designer. Es has over ten years of experience in low-energy buildings in both consultancy and academic roles.


Joanne Haggerty


Julian Sutherland

Newcastle upon Tyne

Julian is a chartered building services engineer and Fellow of CIBSE with a specialism in sustainable/environmental building design, client design advice and low carbon master planning. He has 27 years of experience. Projects include the Royal Ontario Museum in Toronto, Tower Place in London, the Parkview Battersea Power Station scheme. He has recently completed his own certified Passivhaus in Hampshire and is a regular judge for the Construction News Awards and the RIBA sustainable building award. In 2016 he chaired the UKGBC task group – delivering Building Performance.


King Shaw Associates Ltd


King Shaw Associates is a UK based practice specialising in low carbon, sustainable design for buildings, providing a high level of expertise across a wide spectrum of engineering disciplines. Our engineering design solutions are developed uniquely for each project of any size rather than an off the peg engineering solution. What distinguishes KSA in delivering Passivhaus projects, as an energy and occupant comfort standard, is the use of thermal modelling for predicting any issues during the design stage (ie. overheating, condensation, thermal comfort). Various design and construction alternatives (U-values calculation, solar control methods, passive design strategies and others) are then provided.


Lee Evans Elements


Lee Evans Elements is an environmental building consultancy specialising in low energy design, Passivhaus, and responsible retrofits. Our work ranges from whole house retrofits to new education buildings, where we can provide advice on planning and concept designs, detailing and energy consumption analysis. As Certified Passivhaus Designers, we can offer: • Design advice at all stages for low energy homes and buildings. • PHPP (Passivhaus Planning Package) calculations to calculate the predicted heat loss and energy demand. • Planning and Detail drawings with reduced and eliminated thermal bridging. • Thermal bridge analysis using THERM software. • Full architectural services for Passivhaus developments.

Leeds Environmental Design Associates Ltd (LEDA)

West Yorkshire

LEDA was formed in 1997 as a multidisciplinary partnership of design engineers and architects committed to creating sustainable, environmentally friendly buildings. We use our construction experience to make your plans practical and usable. As a firm driven to create buildings with low energy performance that are also healthy and comfortable, we are proud that LEDA can now offer a fully-coordinated building design including static and dynamic thermal modelling, designPH, Passive House Planning Package and Therm modelling. We recently augmented our Passive House capabilities, welcoming Richard Spencer, engineer and sustainability specialist, to the team. Richard completed the AECB Carbonlite Retrofit course in 2016 and became a Certified Passive House Consultant in 2017. Richard will be working with James Clifford, our Architectural & Environmental Design Assistant, and the LEDA team to further support architects and clients with the designs for Passive House and near passive house buildings, including renewables, heat supply and distribution systems, water and electrical services, lighting, and communications.


Legacy Structural Design


Mark Baker

Martin Dowling Architects


MBC Timber Frame UK Ltd


MBC specialise in the production of Passive Homes throughout the UK for people looking to benefit from huge energy savings and reduce their heating demands by 90%. Our super insulated, precision engineered homes are at the forefront of innovation and design and are now available at an affordable cost. Once considered the construction technique of the future, our Passive House System is fast becoming the building method of choice by those wishing to live in beautiful, environmentally responsible, intelligent homes that generate significant cost savings.


Nyman Green Ltd


Nyman green are specialists in the Cost, Project and Programme Management of Environmentally Sensitive and Sustainable Projects such as Ecobuilding & Passivhaus through to Major Capital Delivery & Programme Support. The company was established to answer the growing need for Leadership and Intelligent Support on Projects and undertakings of all kinds requiring knowledgeable, sustainable, economic and common sense attributes. We assist economically with all ranges of projects from self-builders to multi-million pound projects and major capital projects. Nyman Green have experience in Capital Projects ranging from £50,000 to £380m, with management review experience ranging from £10m to £1.6bn


Parsons + Whittley Architects


Parsons & Whittley is an award winning architectural practice based in Swaffham, Norfolk operating across East Anglia. The practice has significant experience in delivering Passivhaus both for private clients and in the affordable housing sector. Driven by the need for sustainable architecture, the need to address fuel poverty and a desire to provide comfortable buildings, Parsons + Whittley have delivered over 40 certified Passivhaus and many more low energy buildings using the same methodology.


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.


Patrick Parsons


BCM is a sustainable building services design consultancy based in Manchester City Centre and a member of the Association of Consulting Engineers. Experts in their field since launching in 2002, BCM specialises in creating affordable low carbon and renewable energy Eco friendly solutions for sustainable buildings, developments and refurbishments. BCM has delivered some of the lowest carbon buildings in the country using Passivhaus principles. This has been achieved without incurring the premium costs usually associated with low carbon buildings.

PD Consulting


Rees Pryer Architects LLP

Bury St Edmunds

Rees Pryer Architects are an award winning chartered practice based in Bury St Edmunds. Our projects range from individual domestic schemes to complex multi-disciplined projects. We pride ourselves on providing well-considered and innovative design solutions that meet both Clients’ needs and reflect the character of the area in which we live and work. We believe that the design solutions and integrated systems that are most successful in their implementation are those that are mostly passive, and in essence, simple in their application. By working closely together these principles can be developed to ensure the Client realises a thoroughly successful long term solution.


Richard Haig





SIMMONDS.MILLS architects is an architectural practice based in Shropshire and Herefordshire, established in 1992. The practice has pioneered a diverse range of techniques exploring energy efficiency and ecological materials through its’ built projects. Now the practice policy is to work towards all projects achieving ‘Silver’, ‘Passivhaus’ or ‘Gold’ energy targets outlined in the AECB’s Carbonlite Programme. The practice has a wide C.V. of built projects, and has worked for public organisations, charities, community groups and private individuals throughout the UK.


Stewart & Shields Ltd


Stewart and Shields Ltd are a Third generation family owned Specialist Building Contractor based in West Central Scotland. The Stewart & Shields Passive Build Team are fully committed to eliminating Fuel Poverty, and delivering homes which have minimal ongoing maintenance costs. We have been constructing Award Winning Passivhaus Type buildings since 2004 and are currently completing Glasgow`s first Multi Storey Passivhaus Certified Development We are here to support the urgent requirement and necessity for sustainable Energy Efficient homes and regeneration of current housing stock. This will assist the Scottish Government in delivering their Scottish Energy Strategy objectives within affordable Social Housing Cost parameters.


Stuart King Architecture & Design Ltd



Sustainable Solutions




T Richard Jones (Betws) Ltd


The Healthy Home Ltd


The Healthy Home Ltd designs, project-manages and carries out residential retrofits for health, comfort and energy efficiency and specialises in using the appropriate modern and natural materials to ensure a moisture robust result. The director of the company, Richard Bendy, is a certified Passivhaus Consultant who has also successfully completed the AECB’s Carbonlite Retrofit course; he is a BPEC certified MVHR/MEV designer/installer/commissioner as well as being a NAPIT registered domestic electrical installer with a special interest in the use of circadian/sunrise/sunset lighting to improve occupant health.


The Independent Airtightness Testing Scheme


The Independent AirTightness Testing Scheme (iATS) is an authorised Competent Persons Scheme created for companies (including sole traders and partnerships) that carry out Air Tightness Tests for residential and commercial buildings. Our professional scheme ensures that Air Testers deliver reliable air tightness testing reports for developers and building control bodies. Clients are always reassured that the work undertaken by Testers registered with the iATS scheme is delivered to a high standard of quality and integrity. You can find out more about iATS here:




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.


Williams Energy Design


Willmott Dixon

Letchworth Garden City