Leithal Designs

Leithal Designs is an award-winning commercial interior architecture and fitout design studio based on the Gold Coast, delivering high-performing spaces across office, medical, retail, hospitality, and mixed-use environments throughout Queensland. Founded and led by Sonia Leith, Leithal Designs brings over two decades of industry experience across building design and interior architecture. The studio is known for its strategic, detail-driven approach, combining creative design with rigorous documentation, compliance expertise, and commercial intelligence. Every project is approached with the same disciplined process: to reduce risk, control costs, and create spaces that work hard for the businesses that occupy them. Leithal Designs specialises in translating brand, function, and regulatory requirements into refined, build-ready environments. From early briefing and concept development through to full design documentation, tender support, and construction-stage coordination, the studio works closely with clients, consultants, and builders to ensure clarity, efficiency, and confidence at every stage. What sets Leithal Designs apart is a deep understanding of how space impacts performance. Designs are not only visually considered, but strategically planned to improve workflow, customer experience, compliance outcomes, and long-term asset value. This is supported by strong technical knowledge of Australian Standards and NCC requirements, ensuring that projects are not only beautiful, but robust, compliant, and future-proof. Leithal Designs is trusted by repeat clients and industry partners for its professionalism, transparency, and ability to deliver calm leadership in complex projects. The result is design that is grounded, purposeful, and commercially smart, without compromising on creativity or quality.