EPIISOD Macquarie Park
Centurion
From humble beginnings to a powerhouse practice, AJC has been thinking about, and shaping modern Sydney in both subtle and profound ways for seven decades.
Originally formed in 1956 with the partnership of friends John Allen and Russell Jack, who were joined in 1965 by Keith Cottier, and the Sydney studio of Allen Jack+Cottier was born. It became synonymous with creative, spatially inspiring spaces and places.
True to that legacy, today AJC works across even more sectors and scales, from education and commercial projects to luxury and affordable residential developments, and master planning for urban growth and renewal.
We’ve earned scores of awards locally and internationally, but more importantly, we’re proud to say our work has changed the way people live, learn, work and play, with buildings and precincts perfectly tuned to their purpose and place.
Galuwa Recreation Centre, Lane Cove Council
The Southern Lookout, Hornsby Shire Council
88 Waterloo Road, Billbergia and Legacy Property
EPIISOD Macquarie Park, Centurion
Our Story
AJC has been instrumental in helping shape the growth of Sydney both as a consultant to planning authorities, and through its own exemplar projects, setting benchmarks for liveability and urban density.
Awards
Since receiving our first award in 1957, AJC has been nationally and internationally recognised for our leadership and impact.
News: April 2026
The Southern Lookout Opens in Hornsby Park
We’re pleased to share that the Southern Lookout is now open as part of the first stage of Hornsby Park, marking a significant milestone in...
News: April 2026
EPIISOD Macquarie Park Completes
Designed by AJC Architects, the 15-storey building reflects a shift toward more residential, amenity-rich student living environments that support wellbeing and community. The project represents...
In the Media: April 2026
A New Benchmark for Sustainable Urban Living
The project proposes two residential towers of 60 and 52 storeys, delivering 858 apartments, including affordable housing provision, within a well-connected urban location. Designed as...
News: April 2026
The City of Sydney’s Largest Co-Living Project Launched
Yesterday we celebrated the launch of Apt.Broadway. This adaptive re-use project designed for Apt.Residential, transforms a 120-year-old wool shed and former Grace Brothers warehouse into...
News: March 2026
Galuwa Recreation Centre Open to the Public
John Whittingham and Sarah Slattery attended celebrations last month with the building officially opened by Anothony Roberts MP, Mayor Merri Southwood and Scott Riley. It...
News: March 2026
Welcoming New Leaders to AJC
We’re delighted to welcome: Mark Gazy, Studio Director: Mark brings over 25 years’ experience across mixed-use, residential, commercial and urban design projects. Known for translating...
News: March 2026
AJC Celebrates Promotions
Anthony di Cristo, Practice Lead Anthony joined AJC as a Senior Designer in 2015 and has steadily progressed through the firm, becoming Design & Technical...
In the Media: March 2026
The Anderson, Chatswood Featured on Apartments.com.au
Located at 54–56 Anderson Street, the project by Changfa Investments and Huirong Group delivers a collection of one- to four-bedroom apartments designed to appeal to...
Thoughts: February 2026
AJC’s Michael Jones Awarded Byera Hadley Scholarship
Byera Hadley 2026 – Michael Jones & Straw | Indesignlive Byera Hadley Scholarship-winner Michael Jones is about to set off on a research trip across...
In the Media: February 2026
Delano Crows Nest Featured on Apartments.com.au
Designed by AJC for Lindsay Bennelong, the project transforms a long-vacant site on Falcon Street into a collection of apartments and townhomes set within landscaped...
News: February 2026
Mentoring the Future of Australian Design
As part of the program, our CEO Dua Green contributed as a mentor – sharing experience, offering perspective and listening to how emerging practitioners see...
News: December 2025
Conversations from World Architecture Festival
Central to the conversation was the idea of authenticity. Dua reflected on the value of a people-oriented approach, noting that there is no single personality...