Working with our clients

Our clients come from a range of backgrounds - professionals, corporations, home owners, developers - and from a mix of private and public sector. Our clients are sometimes first time users of architect's services, and sometimes have used ours or other architect's services previously. Most of of our work is repeat clients and based on word of mouth. On each and every project we produce eloquent, elegant and evocative solutions. So by entrusting us with your unique project, you too will come to realise we deliver on our promises.

Where do we work?

We have two office locations - in Sydney and in the Southern Highlands of NSW.
  • In Sydney our office is based in the eastern suburbs and work throughout the city particularly the east and north shore.
  • In the Southern Highlands we are located in Bowral and travel to any area nearby. We specialise in farmhouses, holiday houses and larger regional design projects. Our bush projects fit perfectly into their environmments and their unique climate.

What makes us different?

We understand that we work for you, so we listen carefully to your ideas, needs and wishes and then translate those into a coherent design for you. A look at our work on this website will show you that we live up to our protean name of flexibility, versatility and adaptability. We bind our project management skills into the project delivery system, and thereby build the project's delivery structure around your idea. Once that is achieved, we set out getting your idea built with integrity, passion and fun, so that there are no surprises along the way.

Who are we?

Proteus Architects, formerly M.Gerstl & Associates (MGAA Architects) have been operating continuously since 2000. We have gained extensive detailed experience in residential, commercial and institutional projects. We are pioneers in 3d design programs allowing our clients to visualise their project in detail during the design phase. This makes construction simpler and more cost effective. We are, and always have been, passionate about our work, committed to our clients' objectives and take the time to invest in our clients' projects.

Meet our Director

Mark Gerstl has over 25 years experience in the construction industry covering a wide range of architecture and project management roles. Having dual qualifications in Architecture and Project Management, he is able to provide clients many value-added benefits to their projects. This level of experience within the design and building professions enables Proteus Architects to provide quality services to every project.

Mark Gerstl has been on many boards and building committees. He is also the treasurer for the executive committee for the Sydney East Architects (SEA), part of the RAIA. He has worked throughout NSW as well as in Victoria and QLD.

  • Bachelor of Architecture - UNSW 1993
  • Master of Project Management - UNSW 1997
  • Alex Rigby Prize UNSW 1997 - first place for a Masters student
  • Registered Architect - Board of Architects NSW 1997
  • Associate of the Royal Australian Institute of Architects
  • Founding Member of the Australian Architecture Association
  • Full Member of the Australian Institute of Project Management

Our Director is a member of the following professional bodies:

Logo for RAIA

Royal Australian Institute of Architects

A+ Member Level 1

Logo for AIPM

Australian Institute of Project Management

Full Member

Logo for Australian Architecture Association

Australian Architecture Association

Founding Member

Logo for Archicentre


Accredited Architect

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