Marian Graham is the original business founder and principal architect. Her many years of experience are at the core of our business systems.

She was made a Fellow of the Royal Australian Institute of Architects in recognition of her services to architecture and the community. She enjoys the variety that comes with working in a regional area with every day bringing new puzzles.

Outside of work, Marian is also a qualified yoga teacher, an a’cappella singer and a lover of music festivals where she volunteers her time.

Laura is a registered architect in Colombia. She has a rich background shaped by an exchange program in Mexico City during her bachelor’s, which expanded her horizons and fuelled her passion for learning about other cultures. She recently completed her Master’s degree at Griffith University, further enhancing her skills. Laura has experience in both residential and commercial projects.

Outside of her professional life, she dedicates her free time to music, her second great passion, finding harmony in the creative interplay between architecture and melodies.

Yasmine earned her Bachelor of Architectural Design from Griffith University in December 2022. Her architectural adventure began abroad following the completion of a diploma in Maths and Physics. Yasmine’s decision to delve into architecture is closely linked with her strong passion for physics, art, and music. Apart from her career goals, Yasmine is a sociable individual who strives to forge deep connections with her clients, seeking to make a positive impact on their environment through her design. Outside of architecture, Yasmine finds joy in playing the piano, painting, and leading Zumba classes!

Amy is a valued member of the Keystone team and has been since 2020. Since then, she has completed her Master of Architecture at the University of Queensland and is currently working toward her architectural registration.

In 2025, Amy was appointed as a Director of the company, utilising her leadership skills and dedication to ensure the Keystone team is at its best ready to take on your project. Her architectural interests lie primarily in education and commercial projects, enjoying building strong, lasting relationships with clients and builders, and seeing the projects evolve from concept through to completion.

Outside of work, Amy is deeply involved in Surf Lifesaving and regularly volunteers her time within the organisation.

Raised in Central Queensland, Mikaela graduated from the University of Queensland in 2019 with a Bachelor of Architectural Design and joined the Keystone team in July 2020. Since then, Mikaela has grown into a key leadership role within the firm. In 2025, she was appointed as a Director, recognising her strong design sensibility, leadership, and dedication to the team and practice. Prior to this, she served as a team leader and took on office management responsibilities, contributing to both project delivery and the day-to-day running of the business.

Mikaela is especially passionate about residential architecture. She thrives on building close, collaborative relationships with her clients—bringing their dreams to life while ensuring the process is smooth, enjoyable, and rewarding.

Natasha has joined our team to assist with administration and accounts. As the first point of contact for our business, she is keen to provide a helpful and friendly service to our clients and consultants. Before the work day starts, Natasha enjoys going for a swim, bike ride or run.

Carolyn has previously been working for Architecture firms in South West Victoria for 10 years as she completed her bachelor degree and then Masters degree in Architecture.

She recently moved to Hervey Bay to be closer to family.

Her interest lies in Urban Design, Civic Architecture as well as Community Development.

Outside of work she enjoys spending time in nature hiking and is currently learning to sail making the most of living on the bay.

Frances recently relocated from England after graduating with her Master’s degree from the University of East London. She started her studies in architecture later in life after finding a passion in design. She has a particular love for heritage architecture, stemming from her visits to National Trust properties in England growing up.

She is aiming to complete her training and become a qualified architect in time, and is currently happy making the most of the sunny weather in the garden and showing her Corgi a good life on the beach.

Ovie is currently completing his final semester of a Bachelor of Architectural Design at the University of Queensland. As part of his studies, he is undertaking a placement with Keystone Architects to gain hands-on experience in the field before beginning his master’s degree.

Having lived on four different continents, Ovie brings a broad cultural perspective and a strong appreciation for diverse architectural styles. He is passionate about thoughtful, people-focused design and is eager to continue learning through real-world projects.

Outside of work Ovie enjoys playing soccer and has also volunteered as an assistant coach for teams in Brisbane.

Stephanie is an architectural graduate whose has recently completed her Masters degree at the University of Queensland. Stephanie’s journey into architecture commenced with a childhood curiosity and interest of toy blocks.
She has interest in exploring relationships between people and space, creating client centric spaces. The process of creating and designing spaces and buildings to match the individual needs of a person appeals highly to Stephanie.

Outside of work, Stephanie is a brilliant cook and enjoys making meals to share with people, including her colleagues.

Outside of work, Peter enjoys hiking and exploring in this beautiful part of the world.

Joshua has just finished grade 12 and works with us as a Junior Technician, whilst completing a Cert III in Engineering (Technical). He joined Keystone Oct 2022 and worked with us throughout his final year at school. Josh is interested in the Architecture profession as he has always had an interest in building and creating different things. He enjoys seeing a clients visions come to life starting with sketches and ending in the final product. Josh’s interests outside of work include woodworks, photography and robotics.