Sydney Studio

Located on the land of the Gadigal people, our Sydney studio is the largest across our practice with over 100 staff. Based in William Street in Woolloomooloo, the studio is a short walk from the Sydney CBD and surrounded by some of the city’s most iconic landmarks.

Our Sydney studio services local, national and international clients in Urban Design, Architecture, Landscape Architecture and Interior Design.


Get in touch:

Level 7, 80 William Street
East Sydney NSW 2011

View location

T +612 9361 4144 E


staff photo of Lisa-Maree Carrigan
  • Director

Lisa-Maree Carrigan

Lisa-Maree is Director of Architecture & Urban Design globally at GroupGSA. She leads engagement of teams and clients through design collaboration and strategic direction

  • Director

John Holland

John is a Director of GroupGSA and responsible for overseeing the management, design and delivery of GSA’s Landscape Architecture business.

  • Director

Nancy Piazzolla

As Director of People, Culture & Practice at GroupGSA, Nancy leads our finance, IT, HR, and other operational departments.  Her focus is on continuous improvement and strategic innovation to ensure the smooth operation of the practice.

  • Principal

Alister Eden

Alister is a Principal with over 14 years of experience in Architecture & Urban Design, both in Australia and the UK.

  • Principal

Steve Hammond

Steven has over 15 years’ experience in landscape architecture with a project focus on the public domain that ranges from strategic to detailed design, documentation and realisation.

  • Principal

Jenna Keyes

Jenna is a Principal in the Sydney Studio. She is a passionate, innovative, and talented urban designer with over 18 year’s industry experience.

  • Principal

Liam Higginbotham

Liam specialises in leading and facilitating engagement with multinational corporate clients and state and federal government agencies to develop strategic accommodation briefs and innovative design solutions, particularly within the Workplace and Commercial sector.

  • Associate Director

Rajat Khanna

Rajat is an Associate Director and a seasoned Project Architect who has delivered many complex projects. Rajat has a wide range of experience on small to large projects both in Australia and overseas in particular USA and India.

  • Associate Director

Brian Graham

Brian is an Associate Director and an accredited Green Star Assessor.

Staff photo of Luke Romandi
  • Associate Director

Luke Romandi

Luke is an Associate Director with over 15 years’ extensive experience in the construction industry.

  • Group Manager Contracts & Delivery

Ming-Yang Xu

Ming-Yang has over 20 years of experience in architecture and construction in Australia.

staff photo Jessica Margiotta
  • Associate Director

Jessica Margiotta

Jessica believes that people are the product of their environment and as a designer can help to create environments that enhance people’s lives and businesses.

  • Associate Director

Jon Downie

Jon is an Associate Director and a specialist in Corporate Workspace Environments.

  • Associate Director

Felicity Ratcliffe

Felicity is an Associate Director and has extensive experience in the landscape architecture profession in both the private and public sectors.

staff photo Anika Hoffman
  • Associate Director

Anika Hoffman

Anika is an Associate Director at GSA. She has experience working on a variety of project types both locally and internationally.

  • Associate Director

Noura Thaha

Noura is a registered architect with more than 10 years of experience in the architecture and construction industry.


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