Passivhaus Affiliate

Standard Members

Dales (Contracts) Ltd

Earby, Barnoldswick

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.


David Bryan


David Cameron


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.

Dempsey Decourcy Architects

Ross on Wye

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 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.


DS9 Design


Duncan Cameron & Hutchinson Ltd


DCH Construction (Duncan Cameron & Hutchinson Ltd) have been constructing good quality housing for over sixty years in the East Anglia region. We recognise the importance of managing a process that demands attention to detail that is the essence of Passivhaus. With a team of dedicated staff, we have embraced sustainable housing in many forms over the years. We have completed a number of Passivhaus projects to date and it is our aim to continue to provide this focus on successfully delivering our current and future Passivhaus projects to our valued clients.