Antonia O’Brien is a QBCC licensed building designer and the founder of antoniajayne Design, based in South East Queensland.

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With Undergraduate and Postgraduate qualifications in Architecture and Architectural Science from Curtin University, Antonia combines formal architectural training with a lifelong connection to the construction industry, having grown up in a second-generation family of builders.

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Since 2016, she has worked in residential building design and drafting across a diverse range of projects and Australian environments.

Having lived & worked in Queensland, the Northern Territory and Western Australia, her work is shaped by a strong appreciation for climate-responsive design, practical construction knowledge and thoughtful spatial planning.

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antoniajayne Design creates homes that balance creativity, functionality and buildability — with a focus on spaces that feel enduring, personal and well considered.