Maintaining mid-century authenticity while adding modern conveniences and usefulness can be a balancing act. These heritage buildings typically provide a unique experience for occupants and truly go beyond the test of time. So, it is important to create a sustainable plan to make maximum use of existing materials. This will also help to plan the stock required for the project. The complications associated with the historic building could affect the plans to add modern elements to the structure. We need to make sure to use, maintain and repair as much of the original structural system as possible. When modern features are needed, we need to ensure that the building can support such additions. Historic buildings usually have structural systems that may require sensitivity when changing or repairing its elements.