Think beyond the square.

We are innovative and aspirational, but grounded in technical expertise and practicality.

We bring an interdisciplinary and holistic approach to developing solutions for the built environment which leave a positive legacy for people and our environment.

With us, sustainability is made easy and fun.


dsquared Consulting provides innovative, independent, robust and cost effective solutions for sustainable built environments.

Since being formed in 2012 by Paul Davy and Deborah Davidson, we have developed a strong track record of creating sustainable spaces, places and communities for people to enjoy healthy lives.

We are innovative and aspirational, but grounded in technical expertise and practicality.

We bring an interdisciplinary and holistic approach to developing solutions for the built environment which leave a positive legacy for people and our environment.

With us, sustainability is made easy and fun.


dsquared Consulting provides innovative, independent, robust and cost effective solutions for sustainable built environments.

Since being formed in 2012 by Paul Davy and Deborah Davidson, we have developed a strong track record of creating sustainable spaces, places and communities for people to enjoy healthy lives.

"Paul & Deborah have provided Southern Cross Care (SA & NT) with strategic direction and expert advice for Environmental Initiatives in designing of facilities and overall operational impacts, and during their involvement we have found them to be extremely professional and knowledgeable in their valued support and guidance."

Daniel Rosato

Development Manager | Southern Cross Care SA & NT

We Walk the Walk.

We tackle the challenges and opportunities of sustainability within our own operations, not just the projects we work on.

We are also active in supporting local and national initiatives and advocacy groups advancing sustainability in Australia.

"dsquared have provided high quality strategic and detailed design advice on a number of high profile SA Health projects and have been valuable and innovative members of various project delivery teams."

Rob Bunting

Manager: Sustainability | SA Health

Meet the team.

We are a multidisciplinary team comprised of individuals passionate in making a difference.

Our diverse backgrounds and combined professional experiences allow us to provide expertise in a large range of areas relating to sustainability.

Get to know us.

Meet the team.

We are a multidisciplinary team comprised of individuals passionate in making a difference.

Our diverse backgrounds and combined professional experiences allow us to provide expertise in a large range of areas relating to sustainability.

Get to know us.

Paul Davy


Paul is co-founder and director of dsquared Consulting.

Paul is a passionate advocate and practitioner for sustainable design in the built environment and believes that any design problem can be overcome with the right combination of experience and, most importantly, attitude.

More About Paul
Paul has experience in the design and construction of buildings and developments across all public and private sectors, in the UK and Australia, both as an engineering services consultant and Ecologically Sustainable Design (ESD) consultant.

Since 2005, Paul’s focus has been the provision of multidisciplinary consultancy associated with major projects in Australia, with a particular emphasis on achieving significant energy and ESD targets in major public sector, health, aged care, education, and commercial projects.
Paul's Qualifications
  • Dip. Environmental Engineering (Hons) - South Bank University, UK
  • Green Star Accredited Professional (Design & As Built, Communities and Performance)
  • Green Star Certified Assessor
  • Green Star Faculty
  • WELL Accredited Professional
  • Member of the Office of Design and Architecture South Australia (ODASA) Design Review Panel
  • Member Chartered Institute of Building Services Engineers (MCIBSE)
  • Incorporated Engineer, Engineering Council (IEng)
  • Member Australian Institute of Refrigeration, Air Conditioning and Heating Engineers (MAIRAH)
  • Member Institute of Facade Engineers
  • Member Institute of Life Cycle Assessment Society

Deborah Davidson


Deborah is co-founder and director of dsquared Consulting.

Deborah is one of the leading ESD and Sustainability Consultants in Australia, with a keen sense of effective and robust solutions for environmentally responsible outcomes.

More About Deborah
Deborah’s specialities include sustainable design, emissions reduction, sustainability policy, environmental management, and resource management.

Deborah is one of Australia’s most experienced Green Star Accredited Professionals, and one of only four WELL Accredited Professional’s in South Australia, making her a leading authority on sustainable building design and certification. Her expertise is often called upon by the Green Building Council of Australia, as Green Star Assessor, in the teaching faculty and as an independent expert in new tool development.
Deborah's Qualifications
  • Bachelor of Science (Hons) Geography - Edinburgh University, UK
  • Green Star Accredited Professional (Design & As Built, Communities, Performance & Interiors)
  • Green Star Certified Assessor
  • Green Star Faculty
  • LEED Accredited Professional
  • WELL Accredited Professional
  • EnviroDevelopment Accredited Professional

Nick Stokoe


Associate. Nick is an experienced ESD consultant with a keen interest in improving Building Performance.

More About Nick
Nick’s career focus has been the holistic field of Sustainable Design where he has been involved in a range of ESD and energy efficiency projects on landmark buildings. Nick is an experienced NABERS Auditor and was the nation’s first Green Star – Performance Accredited Professional, now appointed directly by the GBCA as an Assessor.

Nick’s ability to balance the detailed and often conflicting requirements of cost-efficient design without compromising sustainability targets and benchmarks is invaluable to the projects he works on. He is also one of the most experienced NABERS professionals in the country and utilises this experience to directly support project teams to ensure targets are achieved.
Nick's Qualifications
  • BEng (Mechanical)
  • NABERS Level 2 Auditor
  • NABERS Supervisor & Trainer
  • NABERS Independent Design Review Panel Member
  • Green Star Accredited Professional (Design & As Built, Performance)
  • Green Star Certified Assessor (Performance)
  • Certified Energy Manager

Jacob Potter


Associate. Jacob is passionate about implementing sustainable solutions with experience in energy, resource and carbon management.

More About Jacob
Jacob specialises in strategic sustainability planning and has worked on major projects including the development of carbon positive plans, regional sustainability plans and precinct master plans. He has experience in both the public and private sectors and has supported the design and construction of buildings and precincts across Australia.

With experience in sustainable design, emissions reduction, electric vehicle transitions, sustainability policy, environmental management and waste minimisation, and as a Green Star and WELL Accredited Professional, Jacob can support projects both large and small.
Jacob's Qualifications
  • Bachelor of Architectural Studies - University of South Australia
  • Master of Sustainable Design - University of South Australia
  • Graduate Certificate, Energy and Resources – Policy and Practice - University College London (UCL)
  • Green Star Accredited Professional (Design & As-Built, Performance)
  • WELL Accredited Professional

Ben O’Callaghan


Senior Consultant. Ben lives with his family in Queensland in a sustainable community and has 20 years of experience in design. He is passionate about his electric cars and maximising quality-of-life through design.

More About Ben
Ben specialises in providing strategic planning and design solutions. He has worked on over 50 leading-edge sustainability projects across Australia.

Ben lives and breathes “sustainable design” so can be relied up on deliver quality advice across all stages of a project. He has been used by the Green Building Council of Australia for over 10 years to update parts of the Green Star certification system. Ben’s career includes lecturing in Sustainable Urban Development at Bond University and working for Accenture, the ATO, Aboriginal Hostels Limited several other Federal Government departments.

Since 2002 Ben has been involved in Bodies Corporate and the Chairperson of multiple community organisations. He has previously been engaged to deliver design advice for Councils, ecovillages, cohousing projects, resorts and multiple universities (QUT, UQ, JCU).
Ben's Qualifications
  • Master of Architecture - Sustainable Design. M.Phil. - University of Sydney
  • Bachelor of Information Technology - ANU
  • Andersen Consulting University Prize
  • Green Star Accredited Professional (Design & As Built, Communities and Homes)
  • Green Star Assessor and Expert Panel Member
  • UDIA EnviroDevelopment Professional
  • EarthCheck Trained Professional
  • HIA GreenSmart Accredited
  • Professional

Richard Gardner


Richard has a keen interest in energy efficiency and low carbon design and a particular focus on building simulation, modelling and analysis.

More About Richard
Richard has extensive international experience in the design and construction of buildings across public and private sectors and a range of project sizes, types and values. Richard is an enthusiastic, organised, and conscientious individual with over 16 years’ experience working as both a mechanical services engineer and a building simulation engineer and consistently demonstrates a proven ability to deliver on time.

Richard’s experience includes working on BREEAM, Green Star and LEED projects, designing a multitude of HVAC systems, UK Part L regulations, low carbon design and on-site commissioning of mechanical systems. Richard is conversant with IES VE, EDSL Tas, FirstRate5, Ansys Fluent, LightStanza and ForgeSolar software packages and his skills include building simulation and modelling of HVAC systems, energy, thermal comfort, façade performance, daylight, glare incidence, NatHERS, NABERS, CFD analysis, carbon dioxide and natural ventilation.

Richard has carried out significant research into the effectiveness of the use of earth tubes in pre-cooling/pre-heating outside air.
Richard's Qualifications
  • MPhil Mechanical Engineering (Hons) - Cardiff University, Wales, UK
  • MEng Mechanical Engineering (Hons) - Cardiff University, Wales, UK
  • Green Star Accredited Professional (Design & As Built)
  • Building Designers Association Victoria (BDAV) Accredited Thermal Performance Assessor (TPA) and Energy Rater

Ieva Daenke


Ieva is enthusiastic in finding sustainable solutions in the built environment and strives to deliver accurate and reliable results.

More About Ieva
With a background as a building services engineer, Ieva understands the intricacies in building design and uses building simulation and modelling tools to perform energy, thermal comfort, and daylight analyses to optimise the design of buildings.

Ieva has gained professional experience working on projects within the commercial, defence, health, and education sectors across Australia, including Green Star, LEED and WELL projects.
Ieva's Qualifications
  • Bachelor of Engineering (Hons) Mechanical and Sustainable Energy - University of Adelaide
  • Green Star Accredited Professional (Green Star Buildings Tool)
  • Registered eTool User (Life Cycle Assessment)

Eliza Koch


Eliza is motivated to improving the sustainability of built environments for future generations.

More About Eliza
Eliza has significant experience in energy efficiency modelling, specifically providing NatHERS modelling and associated sustainable design advice for a number of residential dwellings and apartments Australia wide.

Eliza has also looked after Life Cycle Assessments and Green Star submissions for many developments.
Eliza's Qualifications
  • Bachelor of Urban and Regional Planning (Hons) - University of South Australia
  • Masters in Environmental Management and Sustainability - University of South Australia
  • Green Star Accredited Professional (Design & As Built)
  • Registered eTool User (Life Cycle Assessment)

Jarrad Braham


Jarrad has a keen interest in energy efficiency and sustainable design solutions for buildings, systems, and communities.

More About Jarrad
With an engineering background and as an accredited NABERS assessor, Jarrad has expertise in building performance analysis and optimisation, energy assessments, and design of renewable energy generation systems.

Jarrad has worked on many different project types and sizes across Australia including high-rise offices and residential towers, large-scale commercial developments, defence facilities, schools, and suburban housing.
Jarrad's Qualifications
  • Bachelor of Engineering (Hons) Mechanical and Sustainable Energy - University of Adelaide
  • NABERS Accredited Assessor (Office, Shopping Centres)
  • Green Star Accredited Professional (Design & As Built, Buildings, Interiors, Performance)
  • WELL Accredited Professional
  • Registered eTool User (Life Cycle Assessment)

René Schlosser


René focuses on a holistic performance based approach to building designs and developing customised solutions that meet the highest energy efficiency targets.

More About René
René has over 15 years’ experience in the design and construction of buildings and developments across all public and private sectors, in Germany and Australia. René has worked as an Energy-Efficiency consultant, and Green Star Accredited Professional, on over 50 building projects across Australia and Germany.
René's Qualifications
  • MSc Ind. Engineering and Business Management
  • Passive House Certified Designer
  • Green Star Accredited Professional (Design & As-Built)
  • BAFA Certified Energy Efficiency Consultant

Sian Davy


Sian joins dsquared as Accounts and Payroll Administrator, enabling the team to focus all their talents on the vital work of sustainability. She is motivated to increase environmental awareness and respect for the planet’s finite and precious natural resources.