Passivhaus Affiliate

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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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D&P Bespoke Builds Ltd


At D&P Bespoke Builds, our team of highly skilled craftsmen have established a reputation for beautiful builds. We are passionate about the greener future of construction and look to create projects which add efficiency, comfort for our clients, and fit naturally in their environment. With our focus on reducing our carbon footprint, we provide an in-house prefabrication service which we integrate into our projects as much as possible. Our project services include: New builds, New build Passivhaus, Retrofit, Passivhaus renovations, Garden builds. Check out our website for more information or call us on 01424 617197


D.Catlin Building Services Ltd

Henley on Thames


Dales (Contracts) Ltd

Barnoldswick, Lancashire,

We are part of a locally based group of three companies including Dales Contracts Ltd (Building Contractors) and EcoDesign Architecture Ltd, all specialising in ecological construction and design, building to Passivhaus and the AECB Silver Standards.We are also Electrical, Plumbing & Heating Contractors and specialise in installing Solar Photovoltaic (PV, electrical generation), Solar Thermal (Hot Water) and Biomass (Wood) heating systems using Logs, Wood Chip and Wood Pellets as fuel. We also supply high quality British made wood pellets.We also have our own joinery work shop where we manufacture a range of triple glazed windows & doors, with a highly insulated frame all manufactured in timber, with the option of softwood or hardwood construction and different locking systems. The glazing being low E and argon filled making for one of the lowest U value windows and doors on the market. If you are building a new property or renovating your home then these may be just what you are looking for.


Damian Everest


Daniel Perry


Darcy Ltd


DASH Architects


DASH is a leading RIBA chartered architectural and structural engineering practice in London and Surrey that reimagines less impactful spaces. We work with our residential and commercial clients to deliver energy-efficient design, sustainable solutions and responsible construction.


David Cameron


David Cronin


David Daniels


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.

David Narro Associates


David Narro Associates is a structural and civil engineering consultancy with over 35 years’ experience providing expert support and advice for a wide range of projects across Scotland, the UK, and internationally. As a Practice, our team of engineers and technicians always take sustainability and energy efficiency into consideration. We aim to specify materials in our designs which can be locally sourced, are durable, and/or have minimal environmental impact in either their production or disposal. As well as embracing new materials and technologies, we also consider innovative ways to use conventional methods in more sustainable ways.


David Stewart


Debbie Hobbs


Deepika Nambiar


Dempsey Decourcy Architects

Ross on Wye

Denham Benn Limited


Since its establishment in 2007, our team at Denham Benn have worked on numerous housing projects, both social and private, as well as many individual homes. Whilst we have generally incorporated sustainability as a key part of our design ethos, we have become increasingly aware that we should be striving to achieve near zero carbon buildings. We have a desire to use a fabric first approach to reduce building life cycle costs and fuel poverty for our clients; we also strive to use integrated renewables within our projects. As we move towards zero carbon developments, we realise that Pas-sivhaus is likely to become the benchmark standard for new homes and non-domestic buildings.


Denhof Design



Derrie O'Sullivan Architects


The Passivhaus approach to building design offers a tried and tested sustainable strategy which is meaningful because it is measurable in its use of energy and has no equal in our temperate climate. The methodology employs a combination of super insulation, appropriate areas of superbly designed triple glazed windows and doors for optimum beneficial solar gain, air tight construction with a heat recovery ventilation system ( MVHR) to achieve a space heating consumption of less than 15kWh/m2yr: which is vastly superior in comparison to the current UK Buildings Regulations which is in the order of 120kWh/m2yr. Passivhaus is the most cost effective way to save our finite energy resources and offers a high quality of thermal comfort for the people who use and live in the buildings.

Design 2000 UK


Design2000-UK Ltd is a company that is focused on eco-friendly building consultancy and construction services for London and the surrounding area. Services are provided to a different range of customers from large corporations to direct consultancy engagements with smaller building companies as well as individual homes. Our mission is to upgrade buildings to be eco-friendly (low energy homes) to reach good standards as per BREEAM, Passivhaus Design and AECB Silver standard. The concept is to minimise the negative impact of construction activities on the environment and provide sustainable,healthy,low energy buildings, whether new built or by renovating existing homes.


Design Engineering Workshop



Design Foundry MEP



DJK Architecture


DJKA is an RIBA chartered practice, with experience delivering residential new builds, extensions and commercial projects. Sustainability is at the heart of DJKA and aligns with the fabric first approach taken by Passivhaus. Many of our projects incorporate significantly enhanced insulation (beyond basic building regulations) and alternative heating technologies, to reduce their impact and running costs. DJKA’s founder, Daniel Kellett, helped detail the UK’s first Passivhaus care home.


DKA Architects


DKA are a Bath-based, independent architectural practice with over 25 years’ experience based on high-quality design and strong relationships. We pride ourselves on being reliable, personable and professional experts in our respective fields. Working across a multi-sector portfolio of work that includes education, healthcare, commercial, engineering R&D, residential and defence and project values from £0.5m to £50m. We are an ISO9001 registered practice offering architectural services through RIBA Stages 0-7, master planning, interior design, BIM management and design co-ordination. We apply our design vision and technical expertise to create buildings that are expertly designed, carefully resourced and robustly built.


DLA Architecture


DLA Design is an award winning architectural practice which embraces the creative energies of Architects, Interior Designers, Landscape Architects, Technologists and Graphic Designers to produce intelligent and inspirational building designs. DLA is founded upon the value that we attach to our clients, our projects and our people. We regard all our commissions as special and are committed to delivering architecture which is not only beautiful, but functional, and which achieves the highest standards of sustainable construction.

Dominic O'Riordan Architecture


Dreamspace Studio Ltd


DreamSpace Studio is a design practice based in Whitstable that is able to provide Passivhaus, architectural, interior design & project management services from Appraisal to Completion on either new build or (EnerPHit) refurbishments. Our experience ranges from small to large scale high-end residential refurbishments and developments. Our approach is to first understand and identify the project requirement and tailor a service pertinent to the project. Once the way forward is established our structured and carefully managed design process guides you from vision to reality.


DWA Architects

York, Altringham, London