Trennel Architecture is a full-service architecture + interior design studio, focused on bespoke solutions tailored to our client’s brief and site.

Our design approach brings to life the small, but special moments in everyday living.

Through collaboration with our clients and builders, our projects embody a process of trust and understanding that leads to best possible outcomes.

  • “Not knowing how to start our renovation process, Bill has been wonderful and easy to work with, bringing all of our ideas and wishes into a concept and plan that we love. He is extremely knowledgeable of the building industry with many suggestions of design features that we would have never considered. Bill continues to manage our project, working closely with the builders and external contractors, ensuring that all the details are executed.”

    Kirsten & Travis — Scoop House

  • “Lisa and myself for years fantasised about designing our own home and forever discussing the features and elements we would use, if we were able to. When the decision was made to fulfil our dream, with so many ideas and thoughts and conflicting ideals, we needed a chaperone to guide us through the journey that is building your dream home. Enter Bill Hinchcliff from Trennel Architecture, the missing ingredient, who through thoughtful discussions and tactful ideas turned a blank page into the cohesive collection of ideas and elements that has become our home. We are so very thankful for the detailed consideration and expertise Bill has provided us in making our dream a reality, while maintaining our excitement in realising our goal in a final product that we are so proud of.”

    Lisa & Seb — Playhouse

  • "Trennel Architecture were the driving force behind our dream home. From planning to completion, Bill and his team offered expert guidance, creativity, and unwavering support. When decisions felt overwhelming, Bill's insight made all the difference. We're so grateful - and couldn't recommend them more highly."

    Nick & Sammy - Lakehouse

  • "We involved Bill in the early stages of planning our renovation when it was a dilapidated renovator's delight. He helped us see the potential it had, we relied on him heavily for the creative vision and he has been incredibly helpful at every stage. Our house would't be anywhere near as beautiful as it is today without the team at Trennel, could not recommend them more highly."

    Miriam & Tim - Hilltop House

  • In looking for an architect we wanted someone who could blend the beauty of our natural surroundings into the design, ensuring a healthy home using sustainability principles, with natural ventilation and heating whilst still being a piece of modest beauty. We found this in Bill from Trennel. Importantly, we viewed choosing an architect that would work collaboratively with us and our builder as a cornerstone investment to the success of our project. Like any investment, you do your research and then you take a leap of faith. Only half way through the design process we are already seeing the return on our investment and are confident this will bring great returns. Bill is an astute listener and from the very beginning we felt heard. He has embraced who we are and what we want in a beautiful quality home. Has has added substantial value with his creativity, problem solving ideas and professional knowledge. The results are evolving to meet all our expections and more.

    Kyla & Jim - Maslin Beach House

  • "Trennel Architecture has been a pleasure to work with on our coast house project which involves the knowdown of the current residence and design of a new house to maximise the view. Our architect Bill Hinchcliff is down to earth, flexible and listens and responds quickly to questions, changes or suggestions we might have. While visiting another in-progress job in Sydney, Bill travelled down to the NSW South Coast to meet with us, see the property first hand and get a feel for our expectations as well as the aspect of the land and its surroundings. Bill has engaged local services where possible to ensure local council requirements are understood and met for the various reports and engineering specifications required and is always mindful of our budget along the way. The design is modern, functional and presents a really lovely street presence with some innovative features that hit all our requirements. All this while adding that architectural flare we were hoping for and will provide us the wonderful sea and beach views that we have not been able to realise before. This will be a really impressive home when completed. We are confident Bill will work easily with our builder and look forward to the next phase of the project.

    Nigel & Karina - Malua Bay Beach House

Bill Hinchcliff

DIRECTOR & PRINCIPAL ARCHITECT, M.Arch RAIA

Bill established Trennel Architecture with the desire to ensure the journey of designing and building your home is an enjoyable experience. 

With a deep interest and passion for residential architecture,  Bill continues to strive for optimal outcomes for his clients as he acknowledges the impact of design amongst everyday living.

Having worked across both NSW and SA, Bill is experienced in a range of housing typologies, from heritage to contemporary and everything in between.

Bill understands that homes are deeply personal, and by keeping you at the centre of the process, your experience will be too.