About KGA

KGA - Crafting Great Spaces

Kreis Grennan Architecture is a creative collaboration between architect & licensed builder Christian Grennan, and project manager & property developer Chris Kreis. With these complementary skills and over 20 years of experience, KGA provides the best possible integrated services in architecture, urban design, project management and property development.

Working across single residential, multi-residential and commercial projects, the studio’s design process is always collaborative — listening carefully to clients, consultants and craftspeople; asking questions, thinking critically and providing a transparent decision-making process. The result of this established design process are successful projects with careful crafted spaces to live, work and play.

KGA's design ETHOS is our commitment to design quality, great spaces and matched by our attention to detail. Our architecture creates positive experiences for people, lifts their spirits and allows them to appreciate beauty in the built environment. 

Our process is driven by six core design principles to find :
RICHNESS in SIMPLICITY:

  • Resolving complex design through a coherent singular FORM
  • Enhancing space through celebrating natural LIGHT 
  • Working with the inherent beauty of MATERIALS 
  • An approach of integrating SUSTAINABILITY  
  • Augmenting location through considered PLACEMENT  
  • Complementing delight through understanding our USERS


For the home-owner, KGA brings a wealth of knowledge and experience in assessing project needs. Based on analysis of daily rituals and means, gleaned from a rigorous and thoughtful briefing phase, we seek to craft spaces that serve the clients. Comfort, beauty and modesty are central in in forming design decisions, as are the multiple layers of the specific context.

For the developer, KGA offers property development insights, from analysing project viability, to concept development, documentation, construction and marketing. We are passionate about a multiplicity of housing solutions as a necessary response to the growing demand for housing in Sydney. Using progressive designand planning, KGA creates great architecture for everyone. 


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