First-floor additions, also known as second-storey additions, can help maximise your living space without compromising on valuable outdoor space. At Tudor Building, we are your local specialists in designing and building first-floor additions for Sydney homes, offering a tailored approach to meet the unique needs of every homeowner. n specialising in first-floor additions for Sydney homes, we provide our clients with flexibility and autonomy so they can make the most of the advantages that come with building an additional story.