i. Biography
Corey Costelloe is the Australian chef and owner of 20 Chapel in Sydney, Australia, a position that marks the point where years in disciplined brigade kitchens convert into ownership and direct accountability. His career has moved from sous-chef work at Rockpool Bar & Grill to culinary direction at Hunter Street Hospitality, before settling at his own restaurant.
The Climb
Training at Catalina gave Corey Costelloe an early grounding in the precision and restraint that define professional kitchen work. From there, he moved into the kitchen at Rockpool Bar & Grill, where the pace tightened and the standards rose. Between 2009 and 2014, he served as Sous Chef at Rockpool Bar & Grill (2009–2014), a stretch that required consistency, composure and the ability to operate cleanly inside a high-functioning team. In 2015, that progression carried him into the role of Executive Chef at Rockpool Bar & Grill Sydney (2015–2021). The title shifted the work from execution to oversight, placing him at the center of the restaurant’s daily rhythm and extending the discipline already built in earlier years. Those Sydney years further reinforced the core skills that had shaped his path: leadership, discipline and control under service pressure. By 2021, Corey Costelloe had taken on a broader remit as Culinary Director at Hunter Street Hospitality in Sydney, Perth, and Melbourne (2021–2024). The role widened his view across multiple cities and added operational perspective to the kitchen experience he had already accumulated. It was a stage that reflected both trust in his judgment and the progression of a chef long beyond the line’s early demands. Today, Corey Costelloe is chef and owner of 20 Chapel, where the weight of those years now sits inside a more personal operation. Ownership puts his name on the door, and the restaurant reflects the experience gathered across Catalina, Rockpool Bar & Grill, and Hunter Street Hospitality.
Today
At 20 Chapel, Corey Costelloe works as chef and owner, combining the discipline of earlier roles with the authority that comes from running his own restaurant.
Recognition
Corey Costelloe’s career includes sous-chef work at Rockpool Bar & Grill and a Culinary Director role at Hunter Street Hospitality, markers that track a steady rise in responsibility and scope across the Australian restaurant trade.
Profile updated July 2026
FAQ
Asked of Corey
What is Corey Costelloe's current role?
As of 2026, Corey Costelloe is Chef and Owner.
Where did Corey Costelloe train or study?
Corey Costelloe trained at Catalina.
