Non-Developer Members

Non-Developer members have signed up to the GHA Charter.


The 15-40 collective of architecture practices share a commitment to radically reduce the energy consumption of buildings through a ‘fabric first’ approach. Anne Thorne Architects, Arboeal Architecture, CTT & Passivhaus Homes, Good Architecture, Prewett Bizley Architecture and Suetake Studio, who form 15-40, include 7 Certified Passivhaus Designers, and have extensive experience in delivering well designed sustainable new build and retrofit projects. By co-operating to share ideas, knowledge and resources 15:40 is able to offer clients a greater depth of expertise.

Aereco Ltd
ALP Architects (Arbuthnott Ladenburg Partnership)

Award winning architects, specialising in housing for private clients and housing projects; new build and conversion; urban and rural. ALP has successfully secured an Ecohomes "Excellent" rating for a village development of nine houses, and seeks developer and private clients who aspire to zero carbon homes, or to build Code 4 and above based on the Code for Sustainable Homes.


Telephone : 01285 641146

Apex Acoustics Ltd

Apex Acoustics is the leading acoustic and air tightness consultancy based in the north of England. We operate nationally, consulting on design strategies and details, and undertaking testing for all types of buildings. We are UKAS accredited for acoustic and air tightness testing, and Board level members of both the ANC (Association of Noise Consultants) and ATTMA (Air Tightness Testing & Measurement Association) Contact: Jack Harvie-Clark, or 0191 423 6272

Aster Homes

Aster Homes is the development arm of Aster Group. We provide housing development services to a range of group companies including two large Registered Housing Providers, and development agency services to several smaller Registered Housing Providers. We also develop homes for outright sale and market rent.

Baily Garner LLP

Founded in 1976, Baily Garner LLP now employs over 170 staff in London and Birmingham. One of the industry's leading multi-skilled consultancies, our primary roles include architecture, building surveying, sustainability and energy assessments, employer's agent services, quantity surveying, master planning, partnering management and project management services. Our sister organisation, Baily Garner Health and Safety Ltd can also offer CDM coordinator services, site inspections and health and safety training. Baily Garner also has a BSI approved ISO14001 Environmental Management System. Should you wish to contact us please call John Milner on 020 8294 1000 or email him at

Beattie Passive

Beattie Passive Build System is a patented construction method that can be designed to any specification or style using Passivhaus methodology to deliver a complete build system certified by the Passivhaus Institute in Germany; the only company in the UK to achieve this award. A simple and replicable build system that delivers the energy efficiency values of a Passivhaus. The construction forms foundation beams, ground floor, walls and roof all built to form a continuous void. Once in place, flame retardant insulation material is injected into the floor, wall and ceiling cavities, creating one continuous seal. No joints, no leaks. We work from grand designs, housing developments, social, schools and commercial buildings. All can be delivered quickly and at a cost similar to traditional methods but offering huge energy and heat savings, delivering dramatically reduced cost of ownership.


BioRegional Development Group
ca sustainable architecture (UBT)

CA Sustainable Architecture divides its time between Architecture, Energy and Code for Sustainable Homes assessments and Research. We have experience in post occupancy evaluation and firmly believe that actual figures of energy use and comfort assessment are what matter. As assessors we have helped designers and developers attaining CfSH levels 3, 4 and 5.


Telephone : 01635 41688

Centre of Refurbishment Excellence

CoRE is the not for profit, national centre of excellence for green building retrofit. Its mission is to transfer practical retrofit knowledge to support excellence in retrofit products and projects across the domestic and non-domestic sectors. CoRE’s network of Fellows is the UK’s largest bank of retrofit expertise, drawing together leading practitioners from construction, design and academia. They not only shape the CoRE agenda, but also share their knowledge with the growing number of active retrofitters through events, bespoke training and information sharing. Based in Stoke-on-Trent, CoRE is itself an example of refurbishment excellence, an international standard conference and training venue.


Chalk Hill Construction


Telephone : 01483 300230


Checkmate is the first and only Carbon Neutral new home warranty provider in the UK. Our innovative approach to latent defects insurance, which combines traditional on-site inspection methods with the latest online technology, helps us deliver products and service standards well above the norm whilst benefiting the environment and being a carbon neutral link in the construction supply chain.

The Concrete Centre/ Mineral Products Association

The Concrete Centre provides the latest technical guidance, project exemplars and design innovations relating to concrete and masonry solutions. Our aim is to enable house-builders and designers to provide cost-effective, robust, energy efficient, adaptable, high performance housing. The Concrete Centre is part of the Mineral Products Association (MPA). For more information visit


Telephone : +44 (0)207 963 8000

Cullinan Studio

Cullinan Studio began designing Good Homes in 1964, when Ted Cullinan built himself a passive solar house in Camden Town (recently listed Grade 2*). Their recent major housing includes a series of mixed use inner city regeneration schemes in Penarth, Bristol Harbourside and Stonebridge in west London. The Bristol and Stonebridge developments both achieved Building for Life Gold standards. Currently, they continue to build residential developments in Bristol and at Stonebridge, and other schemes in London including 12 residential apartments on the site of their previous office.


David Howard Property Services Ltd
Ecological Building Systems UK Ltd

Ecological Building Systems has been at the forefront of supplying Intelligent airtight and windtight building product solutions and natural insulations for over a decade, gaining sole agency in Ireland and the UK for Pro clima; Gutex and Calsitherm. Our technical expertise and leading range of ecological products, provides the highest specifications for diffusion open, healthy, low energy sustainable buildings.

Eltek Limited


Encraft is an independent consulting engineering firm with three practice areas - Distributed Energy Projects, Building Physics and Web Applications. The firm is built on the expertise and skills of its people, and Encraft offers impartial services based on decades of accumulated specialist technical expertise and experience of developing projects. Our Distributed Energy Projects practice works with commercial and non-commercial clients to develop large scale microgeneration and energy efficiency projects for the UK building stock. Our experienced team of physicists, engineers and architects apply their understanding of Building Physics to provide a range of services which deliver user-friendly and sustainable, low carbon buildings. We focus on reducing energy demand and enhancing thermal protection, ensuring buildings are comfortable to live and work in, easy to maintain and have predictable performance in use. Encrafts in-house Web Applications team produces specialist applications designed for end users to identify most profitable investment opportunities, and develop cost efficient energy efficiency and microgeneration projects.


Energy Saving Trust

Environmental Economics Ltd

Energy and sustainability consultancy with particular expertise regarding large residential developments. Extremely cost-effective service.


Environomic is an independent home energy consultancy. We offer energy proficiency surveys, SAP assessments on new build, whole house energy strategies for existing properties. Also solar PV surveys for Stroma network.

Eric Parks


Telephone : 01759 360909

Feilden Clegg Bradley Architects LLP

Feilden Clegg Bradley Studios are an award-winning practice with an international reputation for design quality, for pioneering environmental expertise and a radical architectural approach.

Four Walls

Four Walls are a specialist company offering building performance advisory and evaluation services to building owners and the construction industry. The company undertakes building fabric and services inspections, both during- and post-construction to advise how a building can be optimised in terms of its energy and resource use and occupant satisfaction.


Telephone : 08456 804802

Helionix Designs and The Bay Trust

An award winning professional Facilities/Security Manager and Sustainable Operations Director. Strong technical and business credentials with an impressive track record of more than twenty years hands-on experience in building and project management. Accomplished/ experienced in strategic planning, project management, and business unit development strategies. Proven ability to successfully analyse the critical business requirements of an organisation, identify deficiencies and potential opportunities, and develop innovative and cost-effective solutions for enhancing corporate social responsibility, competitiveness, increasing revenues, and improving customer service offerings. Marc is currently the Founder and Managing Director of Carey Ambrose; a Consultancy Practice specialising in Sustainable Business Development. Carey Ambrose is one of the founding companies of Ecotomy LLP. In addition, Marc is an Executive Director working for the team at Helionix Designs - an independent research team primarily responsible for designing and building the award winning Pines Calyx. Marc has spent much of his working life in the Public Sector. He has focused predominantly on the education sector for local authorities within London Boroughs, Surrey and West Sussex County Council. He has also spent a significant period of time working directly for commercial clients such as South Bank Arts Centre, International Music Corporation, High Street Supermarket, high end retail establishments, large multi-national brands, National Care Home organisation, independent country estates, and domestic/commercial property owners. Marc has been awarded a Natural Pioneer Award and a Fellowship to Millennium Commission for his work in the voluntary sector; primarily based on his work to progress environmental community projects.
Hoare LEA

Hoare Lea is a highly successful, award-winning firm of consulting engineers, specialising in mechanical, electrical and public health (MEP) engineering, and is the largest of its kind in the UK. Founded in 1862, Hoare Lea remains an independent partnership, with 11 offices throughout the UK and a growing international presence. Hoare Lea works on some of the highest profile projects in the industry and with leading architects, designers and contractors. Currently working on projects across all main market sectors, ranging from small studies and reports to projects valued at more than £4 billion.

Homes and Communities Agency (HCA)

Homes and Communities Agency (HCA) is the national housing and regeneration delivery agency for England, with an annual investment budget of more than £5bn. The HCA was formed on 1 December 2008, is a non-departmental public body and our sponsor government department is Communities and Local Government (CLG). Our role is to create thriving communities and affordable homes. We work nationally but support the ambitions of our local partners to provide better places that offer great homes and good jobs.


Telephone : 01925 644839


Institute of Energy & Sustainable Development

John Thompson and Partners

John Thompson & Partners is an international placemaking practice, with extensive experience of delivering successful projects for both public and private sectors throughout the UK, Europe, China, Russia and the Middle East. We use participatory techniques pioneered and honed over two decades to build collaborative visions for our projects with the very people who will go on to use them. From our studios in London, Edinburgh and Shanghai we undertake placemaking projects at every scale, from cities and towns, to neighbourhoods, streets, and the design of individual buildings.

Jon Broome Architects

Designing sustainable homes Developing sustainable policies and briefs Advising on sustainable construction, specifications and suppliers Bringing together theory and practice to create environmentally sustainable and affordable housing. Building on 20 years of experience of ‘green’ building to incorporate the most cost effective and trouble free measures into the mainstream.

Kiwa GASTEC at CRE Ltd

With many years of experience in the solid fuel, gas and oil industry, GASTEC at CRE Ltd provides energy consultancy, product testing and training to the public and private sector throughout the UK and abroad. Established in the 1930s, the business is located in Gloucestershire. With state of the art testing facilities and a range of very experienced and highly qualified staff, GASTEC at CRE Ltd (GaC) is able to offer a product testing, training and assessment and energy consultancy to a range of clients, from multinationals and businesses to schools and theatres. GaC provides professional and friendly service, with proper scientific advice given in plain English. Biomass, solar thermal or solid fuel, CE marking or gas training... If energy is involved, then GaC can help.


Telephone : 01242 677877


LinkTreat Ltd

Linktreat Ltd. provides consultancy services on the transition to a low carbon economy. Currently working with the UEA Low Carbon Innovation Centre ( on the EU Build with CaRe project ( mainstreaming low energy buildings.


Telephone : 01603 505728

London Bike Hub
The McFarlane Partnership

The McFarlane Partnership are Architects and Interior Designers. We aim to incorporate our knowledge of ecological design and green construction into all our projects, to create affordable, energy efficient buildings that deliver what clients want.


Telephone : 020 8800 1479


Mole Architects


Established in 1936 as a non-profit distributing company, NHBC's role is to raise standards in the new house-building industry and provide consumer protection for new home buyers. NHBC's 10-year Buildmark warranty covers around 80% of new homes in the UK each year. NHBC is the UK's leading warranty and insurance provider for new homes, providing many additional services for housebuilding and non-residential construction, including Sustainability consultancy, assessments and energy ratings, engineering advice for contaminated land, and a comprehensive training programme. The NHBC Foundation is NHBC's independent research institution, focused on research and development, technology and knowledge sharing, and the capture of industry best practice within the new homes industry.

Email: /

Telephone : 0844 633 1000

Website: /
NPS Group

NPS Group delivers a comprehensive and flexible range of property services, tailored to meet the needs of both public and private sector clients across the UK. With extensive experience of designing, adapting, procuring and maintaining homes - we are passionate about creating better, sustainable places to live. Employing specialist sustainability architects ensures our designs are flexible, long lasting and energy efficient throughout their lives. Our new Joint Venture Beattie Passive Norse, is also delivering Passivhaus standard properties at a cost similar to traditional build methods.


One Brighton Management Company

One Brighton (New England Quarter) Management Company manages the One Brighton estate of 172 flats and 20,000 sq ft of commercial and community space. The company undertakes full maintenance and management of the estate as well as providing the services of a full time green facilities manager.

One Brighton (New England Quarter) Management Ltd
Oxford Brookes University

Phase Energy Ltd.

We are a consultancy specialising in phase change materials. We assist clients with the development of PCMs, methods of entrapment, use in construction materials, advice on testing etc.

Website: http://
Photon Energy Ltd

PhotonStar LED Ltd

PhotonStar LED Ltd. are UK designers and manufacturers of innovative performance interior LED lighting and controls. Our range of LEDs has been recognised by Lux magazine as providing the “best halogen replacement” and won the Lighting Association “Light source of the year” and “innovation” awards against global players including Osram and Havels Sylvania. The PhotonStar philosophy unites innovation, design and environmental responsibility within each product in its LED range. With the promise of excellent performance, simple installation and low maintenance, PhotonStar is leading the way in providing workable low-energy solutions that achieve effective results.

Prince's Foundation

The Prince’s Foundation is an educational charity which exists to improve the quality of people’s lives by teaching and practising timeless and ecological ways of planning, designing and building. The Foundation believes that green construction needs to be a combination of robust thermal efficiency in individual buildings, with broader agenda promoting mixed-use neighbourhoods, reducing households’ dependency on car travel.

Telephone : 020 7613 8500

Pollard Thomas Edwards LLP

Pollard Thomas Edwards architects (PTEa) offers a unique combination of commercial acumen, design talent and social commitment. Our rigorous, questioning approach produces design solutions that are intelligent, imaginative and which add value and joy. We work closely and collaboratively with our clients, forging long term relationships. We place great importance not only on the way that buildings look, but also on the way that they are made, the way they are used and their graceful ageing. We combine high quality design with explicit social purpose, marrying an understanding of whole community needs with an acute commercial instinct. Our building performance appraisal is integral to our approach to sustainability and utilises valuable feedback from clients and end-users. Our Head of Sustainable Design helps our project teams to give our clients practical advice on creating sustainable developments in a cost effective way.


Telephone : 020 7336 7777

Radclyffe Associates Ltd

Fuelled by a desire to emulate the efficiency of the termite mounds in the Northern Territory of Australia, Simon uses natural materials and construction methods to create contemporary family homes, concentrating on the wellbeing of the inhabitants.


Telephone : 01494 434163

Rationel Windows (UK) Ltd

Good, solid quality workmanship has characterised Rationel’s windows and doors since the first products were shipped from our factory in Sdr. Felding in 1954. On that basis, Rationel has created a sound foundation, and is today an international company with sales activities in Denmark, Great Britain and Ireland. Rationel manufactures energy saving and contributing windows and doors of premium quality in terms of comfort and security. We develop our windows and doors continuously, ensuring that they will always meet current statutory requirements as well as market requirements for design and functionality. Rationel is part of the DOVISTA Group which consists of nine leading door and window companies in Europe. DOVISTA A/S is owned by VKR Holding and employs approx. 15,000 people in more than 40 countries.

Renson Fabrications Ltd

RENSON® is a ventilation and solar shading specialist. RENSON® products have been designed to improve the indoor air quality and comfort for those in residential and commercial buildings as well as reduce the energy costs. RENSON® has a range of louvres, trickle ventilators, brise soleil and external blind solutions.


Richards Partington Architects

We are committed to minimising the environmental impact of our buildings. We advocate a commonsense approach based on passive design; an efficient building envelope and closing the gap between predicted and actual energy consumption.


Rickaby Thompson Associates Ltd
Robust Details Ltd

Robust Details Limited is a UKAS accredited product certification body operating the robustdetails® certification scheme which helps new homes developers to demonstrate Part E compliance without pre-completion testing. Since 2004 it has registered 750,000 new homes and through monitoring and testing demonstrated over 98% compliance since starting and 99.4% over the last year. There are sixty different party walls and floors in all materials with standardised processes, comprehensive testing, monitoring and knowledge transfer including free training animations and on-line handbook. The company continues to develop new Robust Details and is looking to bring the pattern book philosophy to other areas to improve quality, reduce risks and improve compliance.

SC2 Sustainability Consultancy

Steve Charter of SC2 has worked with the GHA to develop and deliver its training on Closing the Performance Gap, and on proposals for further training on Sustainable Building Skills Plans, VIAQ, Overheating and Climate Change Adaptation and other issues. Steve was co-author of the first Level 3 Cert/Diploma on Sustainable Construction and has particular expertise on training and skills issues, as well as wider sustainable building issues. Steve also works part-time for Helionix Designs and the Bay Trust (other GHA members) where he is involved in work to develop new ultra-low impact building systems.


Telephone : 07990 778581

Six Cylinder Limited

Six Cylinder is a specialist consultancy offering post-occupancy and building performance evaluation services, technical risk management, retrofit coordination and Soft Landings support, based in Southwest London. We provide robust feedback on the in-use performance of buildings. This includes analysis of the performance of the building fabric, in-use energy and water consumption, indoor air quality, thermal comfort and relative humidity, and post-occupancy feedback from residents and building users. We support designers, developers, construction management teams in holistically addressing their projects to ensure that buildings work efficiently and effectively. We feedback on what works and what doesn’t, and what needs improving in the design, construction, handover and operation of buildings.



SLR Consulting Ltd


sustainablebydesign LLP is an Architecture and Design practice which delivers sustainable built environments. We have experience in housing, workplace and education newbuild and refurbishment projects to very low energy and PassivHaus standards.

The Timber Frame Company Ltd


Tisdall Associates

Town and Country Planning Association
University College London (UCL)


Telephone : 020 7679 5981

University of Sheffield

University of Westminster

URBED (Urban & Economic Development Group)

Waugh Thistleton Architects


Willmott Dixon Energy Services Ltd
Woods Hardwick Limited

Woods Hardwick are a multi-disciplinary company comprising Architects, Civil Engineers and Town Planners providing service to the industry across a wide spectrum of development. As well as being affiliated to the Good Homes Alliance we are members of the UK Green Building Council. Our award winning dedicated residential department includes a BREEAM Sustainable Communities qualified Assessor, an accredited Code for Sustainable Homes Assessor and staff trained in CfSH matters. We aspire to designing zero carbon and zero impact homes and welcome the opportunity to work with like minded professionals.


Telephone : 01234 268862



Upcoming events RSS feed

  1. APR 21

    Sustainable Living. How do we get there?

    Spirella Ballroom, Letchworth Garden City SG6 4ET

  2. APR 30

    Site Visit to Mint Street, London E2

    Mint Street, Bethnal Green, London E2 6JL

  3. APR 30

    Annual General Meeting

    The Reliance 336 Old Street, London EC1V 9DR

  4. APR 30

    GHA Social

    The Reliance 336 Old Street, London EC1V 9DR

  5. MAY 13

    Masterclass - Closing the Building Performance Gap

    Peabody, 45 Westminster Bridge Road. London SE1 7JB

  6. JUN 11

    Masterclass - Closing the Building Performance Gap

    Joseph Rowntree Foundation, 89 Albert Embankment, London SE1 7TP

Members Area RSS feed

  1. 24-3-15

    GHA 2015 AGM

     The GHA's annual General Meeting will take place at  4pm on the 30th April at The Reliance on Old Stre... Read more >

  2. 3-3-15

    Masterclass - Closing the Building Performance Gap

     Closing the Gap
    The GHA has recognised the gravity of a building performance gap since we began in 2007. We&rs... Read more >

  3. 25-2-15

    CoRE's Retrofit Coordinator Diploma Dates

    The Centre of Refurbishment Excellence (CoRE) is pleased to announce new dates and venues for its award winning Retrofit Co... Read more >

  4. 23-2-15

    Six Cylinder - Honing Handovers

    As part of the the publication of the 2014 Plan of Work, the RIBA has commissioned a series of supporting books on both the... Read more >

  5. 23-2-15

    Cooling the UK Housing Stock post 2050's

     Just published is a new paper on tackling overheating in homes - Cooling the housing stock post 2050s. 
    S... Read more >

Latest news RSS feed

  1. 20-3-15

    Home warranty provider, Checkmate, first in industry to receive TSI stamp of approval

    Consumers looking for legitimate home warranty providers that ensure consumer protections above and beyond those outlined i... Read more >

  2. 23-2-15

    Apex Acoustics push for research into MVHR noise

     Mechanical ventilation systems were used in 70 % of new dwellings in 2011. Modern dwellings are increasingly air... Read more >

  3. 20-2-15

    Beattie Passive exhibiting on the GHA stand at Ecobuild

    All day on Wednesday 4th March, the people from Beattie Passive will be on hand to discuss your pasivhaus needs.   Bea... Read more >

  4. 20-2-15 exhibiting on the GHA stand at Ecobuild

    Tuesday 3rd March, come along and chat to the people from Checkmate.  Checkmate is the first and only Carbon Neutral n... Read more >

  5. 20-2-15

    Kiwa GASTEC exhibiting on the GHA stand at Ecobuild 2015

     Come and meet with the people from Kiwa on Tuesday 3rd March.  With many years of experience in the solid fuel, ... Read more >