We believe design excellence is the result of a strong team, focused on continuous development and refinement.

Kreis Grennan Architecture (KGA) is a passionate team focused on creativity and collaboration. Working in a studio environment that encourages openness and critical thinking, a diverse range of skills and experiences gained all over the world are brought together in KGA’s projects.

The studio is a place of fertile cross-pollination, where ideas are shared, brainstorming is encouraged and talents are fostered through ongoing professional development. Design Director Christian Grennan oversees all projects, ensuring the energy and ideas of the team are harnessed to deliver a high level of architectural detailing, while General Manager Chris Kreis is focused on creating a supportive environment in which individuals — and the studio as a whole — can grow. 

Christian Grennan

Design Director & Principal Architect

Born into a family of makers, Christian has worked as an architect for more than 20 years both locally and internationally on multi-residential and mixed-use projects. He takes great pleasure in learning from all those around him — clients, professionals, tradespeople and the team at KGA — enjoying the process of crafting unique spatial solutions for people to enjoy.

Christian currently lectures in design and construction at UNSW, having taught design, design theory and construction for the last 10 years at various universities. His interests outside of architecture and design include woodwork, metalwork, contemporary art and film, nature, poetry and landscape design. 

Registered Architect #8036, Builder’s Licence, Bachelor Philosophy

Chris Kreis

Managing Director, Project Manager

Chris loves working with people and property, a joy thathas developed over 20 years in the architecture and property developmentindustries. In this time, he has managed small to large scale developmentprojects, enjoying the delivery of unexpected design solutions to clients andseeing their response. Critically, he applies both precision and creativity toproject management, providing solutions to complex challenges that enableprojects to come to life.

His role at KGA revolves around the big picture — preparing complex development strategies, ensuring the business runs smoothly, clients are taken care of and projects progress according to schedule. When away from the studio, Chris enjoys spending time with family and being in nature hiking, camping, skiing and diving. His passions for travel and photography go hand-in-hand, while he stays mentally and physically balanced through a regular yoga practice. 

Ann-Elise Hampton

Project Architect
B. Arts B.Architecture (Hons 1)

With more than 15 years in the field working with some of the best architects in Sydney, Melbourne and Holland, Ann-Elise has been exposed to diverse and exciting design approaches. As an architect and team leader, she enjoys mentoring and sharing knowledge, and brings an understanding of planning processes and construction knowledge to projects, so that they can develop on a practical, as well as creative level. Ann-Elise sees workshopping as an invaluable process — “It brings me the most satisfaction, even if it means steering away from the original idea; this is when the best designs are created” she believes.

Ainhoa Martinez

Graduate Architect

Ainhoa is an all-rounder, working on designd wellings from concept to completion, with a focus on single residential homes and terrace alterations. She brings a sense of curiosity to the design process, questioning the way things are done in order to keep evolving and with the aim of achieving more powerful and meaningful designs. Although she calls herself an “IT organisation geek”, Ainhoa also enjoys more physical pursuits — such as riding her bike and rock climbing — and gets her creative fix by making ceramic objects.

Rob Burwell

Project Architect

Rob has over 10 years experience in architectural practice — three of them as a registered architect in the UK and six in Australia. As Project Architect at KGA, Rob appreciates the autonomy and freedom of design he is offered, bringing a European style and design approach to the team’s collective offering. Music, film and art are Rob’s interests outside of work hours. 

Omar Majzoub

Assistant Architect

Omar gained experience as a student and junior architect in Beirut before coming to Australia and joining KGA. He works across projects primarily in the concept and DA phases, and also assists the team in 3D modelling and visualisation. Omar relishes the opportunity to work on a number of different projects and also to work within a friendly and humble atmosphere with his teammates — who he calls “amazing people”. He cites his passion for the craft of architecture as his greatest asset, while attention to detail and knowledge of various software programs are of great benefit to his team. In his spare time, Omar indulges in swimming, fishing and listening to heavy metal music.

Carl Costantine

Assistant Architect

Hailing from Lebanon, Carl interned at several firms in Beirut and worked briefly there as a junior architect. At KGA, Carl enjoys the diversity of the team’s background, experience and skills, which offer a large range of knowledge to learn from. He himself offers design, technical, computer software, model-making and visualisation skills to the mix.Other than architecture, Carl enjoys outdoor activities, music and travelling. 

Sebastiaan Boer

Assistant Architect

Bringing his Dutch expertise to Australia, Sebastiaan has worked on concept designs for additions and alterations for an interior architecture company in The Netherlands, as well as model making and renderings as a freelancer. As Assistant Architect at KGA he enjoys being involved in all stages of various projects — although he has a particular interest in conceptual design — and values working within the collaborative team environment. Sebastiaan loves being active, hiking, surfing and cross-fit boxing as often as possible, as well as travelling and photography. 

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