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About us


Meet our Managing Director - Mr. Greg Elhen


  -  Bachelor Degree in Building Construction Management (Honours) at University of NSW, Australia 

  -  Studied masters of Architecture at UTS, Australia

  -  Diploma of Architecture at Granville TAFE

  -  Member of Australian Institute of Building No. 9729

  -  Member of Australian Institute of Quantity Surveyors No. 9305

  -  NSW unrestricted and unblemished Builders Licence since 1993  

  -  Home warranty Insurance $5 Million Plus


  Greg Elhen has been working in the industry since 1993. He worked for large design and construction

  companies such as Project Control Group, Buidcorp, HPA Architects, Mirvac construction and Prestige Building



  "I am grateful to have been part of the design and construction of Sydney's finest landmark projects such as Walsh

  Bay redevelopment, a $600 Million project located at Hickson Road Walsh Bay. This project included luxury mix

  used residential and commerical high-rise apartments with marinas, the refurbment of bond stores and infrastructure

  works. Pfizer Head office a $45 Million project located at North Ryde and other Sydney based low to high-rise

  residential and commercial projects. These larger tier one companies propelled me to start my own design and

  construction company. 


  My business goals have been to continue providing a high level of service and accomplish the best possible design and

  construction solution to all my clients, no matter the size of their project".








Mission statement


We are committed to:

  • Delivering the highest level of consistent quality in all of our products and services.
  • Excel in all forms of effective internal and external communication.
  • from relationships to design and building.
  • Research, understand and anticipate customers, markets and competitors and react with innovative solutions.
  • Develop and maintain a transparent and effective organisation clearly defining all relationships, responsibilities and processes.
  • Ensure cost and operational efficiency by testing various practices and applying appropriate methods and technology.
  • Identify and understand opportunities to add value to Oscar Design and Construction by combining existing skills, resources and relationships.
  • Act in the interest of investors, stakeholders, governments and private investors.
  • Continuously enhance our compliance culture. 
  • Act efficiently, honestly and fairly at all times.