Glenn Murcutt redefined the theory of modernism in modern architecture, when he went back in time to use wood and make designs of buildings which never required air conditioning, which also made the house owner cherish. He redefined modernism and simplicity by infusing the design principles of nature into modern designs to be termed as modern architectural designs. The house designed by Murcutt will be different in Europe to what he would design on seashore in Australia, considering the variable availability of resources, the consideration of environmental concerns, and the design complementing in the surrounding nature. Thus, Murcutt would use more of wood and glass structures in Australia but more of steel and glass in Europe. This again disproves the permanence of the assumed theory of modern architecture. The fundamental concept may remain the same, which is to be symmetrical, forward looking, technology adaptive, and environmentally compatible, but the entire process that goes into designing the building is not termed as fundamental, since the variance of modernity in modern architectural designs is significantly fluctuating.
Glenn Murcutt designed the Magnay House which is seen as the most endurable house and defies the essence of time. The things which endure have a much deeper relationship with the external environment.
Heynen speaks about the constant conflict of modernity with tradition, and claims that nothing is permanent because reason becomes attached to otherness and change. He further elaborates that criticism was meant for finding the truth in medieval times, but truth becomes criticism in the modern age and that modernity as a condition cannot be set and nailed to a single set of attributes and objectives. This supports the argument that modernity is varying and modern architecture is less prone to remain confined to a single set of principles and concepts. The fundamentals of modern architecture is changing and will keep on changing with time and this again proves that modernity is not a confirmed set of fundamental concepts and it is bound to change.
Murcutt has used simple designs based on form and function and durability as its basis, and has made it mould with the surrounding environment and climate. The use of simple designs and materials are making themselves as a priority in the modern definition of current architectural designs emerging from increased stress on simple designs, enduring buildings throughout variable time, and adopting flexibility in designs to be eligible to be changed over time without much cost input. The modernist space has been occupied with simplicity rather than complexity, with maximum efficiency of space rather than wastage, and blended more with nature than being against it.