
Our vision is to think beyond the square.
"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

Paul Davy
Co-founder and director. 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.
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.

Deborah Davidson
Co-founder and director. Deborah’s specialties include sustainable design, emissions reduction, sustainability policy, and environmental management.
Deborah is one of Australia’s most experienced Green Star Accredited Professionals, with her expertise often called upon by the Green Building Council of Australia as a Green Star Assessor and as an independent advisor to new rating tool development. Deborah is also experienced in applying LEED and WELL to complex projects, making her a leading authority on sustainable building design and certification.

Jacob Potter
Associate. Jacob is passionate about implementing sustainable solutions with experience in energy, resource and carbon management.
Jacob specialises in strategic sustainability planning, focussed on decarbonising the built environment and driving the net zero emissions transition with real world solutions.
This includes providing strategic advice on using design to drive emission reduction outcomes, embedding circular economy outcomes throughout design development and in operation, developing carbon neutral plans for organisations and buildings, and facilitating collaborative stakeholder engagement sessions with government, businesses, and the community.

Jarrad Braham
Associate. Jarrad is passionate about integrating sustainability into any building project using a pragmatic and sensible approach.
With an engineering background and as an accredited NABERS assessor, Jarrad has particular expertise in building performance analysis, energy assessments, and low-carbon buildings and precincts.
Jarrad is a Green Star and WELL Accredited Professional and has worked on a wide range of Green Star and WELL certified projects around Australia.

Ben O’Callaghan
Principal. 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.
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 upon to deliver quality advice across all stages of a project. His experience includes providing design advice for councils, ecovillages, cohousing projects, resorts and multiple universities (QUT, UQ, JCU).
Ben has multiple accreditations including GSAP-Communities and is an independent Assessor for the GBCA.

Ashlee Duno
Senior Consultant. Ashlee’s architectural background, along with her experience within engineering and consultancy environments, provides a strong understanding of the benefits of integrated design and collaboration.
With technical experience in building simulation modelling and energy efficiency across a broad range of building typologies, Ashlee applies her knowledge in legislative requirements, policies, and voluntary sustainability frameworks to deliver solutions for the built environment, strategic sustainability planning and research projects across precincts and regions.

Matt Cuppleditch
Technical Principal. Matt has a passion for building physics, façade optimisation, and renewable energy generation systems.
As a mechanical engineer, Matt’s expertise lies in the analysis and optimisation of building systems as well as complex façade analysis involving thermal bridging and moisture management.

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

Eliza Koch
Eliza is motivated to improving the sustainability of built environments for future generations.
Eliza has significant experience in a range of national and international green rating schemes including Green Star and WELL.
Eliza has also looked after Life Cycle Assessments, NatHERS modelling and associated design advice for residential dwellings and apartments Australia wide.

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

Carmen Wilson
Carmen is committed to seeing healthy and responsible and low carbon construction materials and products installed in building & interiors projects.
Carmen is a Green Star Accredited Professional with over 10 years’ experience in ESD, energy efficiency for residential projects & interior design fitouts.
She has provided consultancy and project coordination using Green Star, Living Building Challenge, CORE & NatHERS in building and interior jobs across workplace, commercial, residential, education and health sectors.

Ben Harris
Ben is passionate about all things sustainable, ranging from energy efficient low carbon building design, to developing net zero emission plans for organisations and buildings.
With a background in structural engineering, Ben moved into the sustainability sector to pursue a career that better aligned with his environmental interests and values. Ben has worked on many different project types across Australia, delivering Green Star certification for high-rise residential towers and large-scale sports facilities, and Net Zero emission plans for a range of councils across South Australia.

Juli Wolter
Passionate about integrating regenerative design practices to create connected, liveable and resilient cities, Juli specialises in strategic planning and crafting innovative sustainable solutions through collaboration.
With over 15 years of experience, including a decade as an Architect, Juli’s deep understanding of design, construction, and project management enhances her expertise as an ESD/Sustainable Design Consultant. She delivers practical, impactful, and forward-thinking solutions across diverse building typologies, public realms, and strategic projects, with expertise in research, master planning, passive and resource-efficient design, adaptive reuse, climate resilience and adaptation, health and wellbeing, and sustainability frameworks.
Juli is a Green Star Accredited Professional (Design & As Built, Buildings, and Communities), a registered Architect, and a member of dsquared’s RAP Working Group.

Bilal Khan
Bilal has a background in architecture and a Masters degree in Sustainable Design & High Performance Buildings.
Bilal has a key interest in utilising building-simulation, modelling, and life-cycle analysis to create healthy and positive environments.

Alleigh Hamnett
Alleigh loves solving any problem put in front of her and enjoys applying this love to making the built environment more sustainable for future generations.
Alleigh began at dsquared full-time after graduating with a Bachelor of Mechanical Engineer (Renewable Energy) and Bachelor of Sciences (Physics) at the end of 2023. Previous to this she worked at dsquared as an intern, and then part-time as an Undergraduate Consultant.
Alleigh is a Green Star Accredited Professional, and works on a range of projects using a variety of sustainable certification schemes including LEED and WELL.

Sian Davy
Sian is motivated to increase awareness and respect for the planet’s increasingly precious and finite natural resources.
As dsquared’s administrator and lifelong environmentalist, Sian is proud to support the team, enabling them to do vital work for sustainability.

Harrison Hylan
Harrison believes that sustainability and reducing environmental impacts should be made easy for the benefit of everyone.
Harrison began at dsquared after graduating with a Bachelor of Environmental Policy and Management. From interning in local government to being involved in the Youth Environment Council, he has a long-running passion for sustainable development in global and local contexts.
Harrison is Green Star Accredited Professional, and works on a number of projects, utilising his social science and geography background to problem solve and view things holistically.





































