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About Us

ABOUT KGA is an established architecture design studio experienced in architecture, interiors, urban design, property development and management of construction programs. Our company’s extensive experience is supported by design director Christian Grennan, who graduated from the University of NSW in 1998. Christian is KGA’s nominated registered architect, design practitioner and a licensed builder. Our industry knowledge covers a wide range from master planning, feasibility studies, site analysis, concept designs, council building approvals, complying development approval, construction documentation, interior design, and contract administration. Established architecture practice, design-driven and results-focused. Thorough and rigorous approach to design - ‘getting the details right’. Senior staff with over 25 years of experience in architecture and design. Director oversees all projects, ensuring a tight Quality Management System. Medium size practice – capacity to manage large projects, but flexible, efficient and collaborative in our methodology and approach. WE LISTEN WE CREATE WE CRAFT GREAT SPACES

Services Provided

Architectural Design, Architectural Drawings, Bathroom Design, Custom Homes, Deck Design, Energy-Efficient Homes, Floor Plans, Green Building, Home Additions, Home Renovating, House Plans, Living Room Design, Modular Home Additions, New Home Construction, Project Management, Space Planning, Staircase Design, Sustainable Design, Tiny House Construction, Kitchen Renovating, Home Renovation, Home Extensions

Areas Served

Marrickville, Petersham, Sydney, inner west, Balmain, Rozelle, Leichhardt, Lilyfield, Ashfield, Summer Hill, Newtown, Redfern, Glebe, Annandale, Haberfield, Ashbury, Dulwich Hill, Earlwood, Wolli Creek, Tempe, Enmore, St Peters, Erskineville, North Sydney, Kirribilli


HIA Excellence in Brick Award MBA House Additions & Alterations Marrickville Medal - Finalist Inner West Sustainable Building Award Finalist HIA NSW Awards, Townhouse Marrickville Medal - Finalist MBA Award - Best use of Bricks

Professional Information

Architect c.grennan #8036


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Business Details

Business Name

Kreis Grennan Architecture

Phone Number

(02) 9560 0888


94 Illawarra Road
Marrickville, New South Wales 2204

Typical Job Cost

AUD $500,000 - 2,000,000

License Number



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