Samuel Thomson


Sam has direct oversight of EcoResults' ESD team and is a key point of contact for our clients including developers, architects, town planners, project managers, builders and homeowners.

An accredited Thermal Performance Assessor with the BDAV, Samuel also holds a Qualifications and Certificates in Building Design, Engineering, Vocational Education and Training, Thermal Performance Assessment and Building Retrofitting for Sustainability.

He brings with him extensive public speaking, teaching, mentoring and team building experience, and a diverse range of construction industry experience throughout Australia and South-East Asia.


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Steve Clifford


Steve oversees the Product Development Division of EcoResults including the Wall Vent Seal (now available at Bunnings). He manages our Waste and Energy Efficiency consulting teams.

An accredited Thermal Performance Assessor with the BDAV, Steve also holds a Qualifications and Certificates in Thermal Performance Assessment and Home Sustainability Assessment.

Steve has broad experience in the sustainability and construction/design sectors in the UK, Europe and Australia, and is a member of the Building Designer's Association of Victoria's Home Sustainability Assessors (HSA) Advisory Board.


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Yvonne Hill

ESD Consultant

Yvonne is our resident building designer ESD Consultant and Green Star Associate. She specialises in all aspects of environmentally sustainable and energy efficient building design and construction.

Yvonne's areas of proficiency include ESD and Sustainability Management Plans (including the BESS, STEPS and SDS tools), Sustainable Design Assessments, Green Star Assessments using the Design As Built rating tool
, Green Travel Plans and Building User's Guides.

Ask Yvonne an ESD question

Marius Andrasciuc

ESD & WSUD Consultant

Marius, our building approvals expert is enthusiastic about sustainability, architecture and getting great results for our clients in as short a time as possible. His motto is "if its worth doing, its worth doing properly!"

Marius has an Advanced Diploma in Building Design (Architectural) and a Certificate IV in NatHERS Assessment. He is also one of our key Water Sensitive Urban Design (WSUD) practitioners, producing WSUD Responses and STORM assessments regularly. He gets a real buzz out of finding solutions to ESD and WSUD problems on challenging projects.

Ask Marius about your project

Tobias John

ESD & Daylight Consultant

Tobias is another of our resident energy rating aficionado with a penchant for tricky energy ratings and daylight assessments. He loves getting good results for our clients, even on curly designs in difficult climate zones. This is especially the case for building designs which feature a large amount of glazing, which can make it notoriously difficult to achieve a 6 star rating. Toby has his Certificate IV in NatHERS Assessment, is currently accredited as a Thermal Performance Assessor and is a Basix Assessor.

Toby's work also includes digital modelling of developments and/or individual rooms to then conduct daylight assessments or thermal modelling for BCA Part JV3 compliance. The results of these assessments are then included in our ESD, BESS, Daylight Assessment or BCA Section J compliance reports.

Ask Toby an energy rating question

Kirstie Rogerson

Waste & Daylighting Consultant

Kirstie has a background in town planning and development administration. She specialises in Waste Management Plans and ESD Reports for residential apartments, mixed use and commercial developments.

ESD reports Kirstie regularly completes includes Sustainable Design Assessments (SDAs) and Sustainability Management Plans (SMPs). Our clients really appreciate Kirstie's eye for detail and her focus on project specific solutions that meet Council requirements in an efficient, cost effective manner.

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Savannah McMaster

Savannah, the newest member of Team EcoResults, came to us with a love of puzzles and an eye for detail. She is currently undertaking a Certificate IV in NatHERS Assessment and is working closely with Marius and Tobias to increase her skills. Savannah is providing invaluable support to Team EcoResults, drawing from her passion for sustainability and vast administration background in the construction industry. We look forward to welcoming her as a fully accredited NatHERS Assessor.

Get Savannah's help on an energy rating