Is more than 5.7m possible? If another 2m are possible, it works, anything else will probably be too tight. Our single-family house has external dimensions of 9.6m x 7.6m. Internal dimensions of 9m x 7m. In the living area, there is a bay window that extends the 7m by another 1.5m in this area. The dining table is located there. Without this bay window, it would probably also be too tight. On the ground floor, we only have the entrance area, guest WC, open-plan living area with kitchen, dining area and living area in an L-shape, and adjacent to the kitchen a utility room where the gas boiler is also housed. Upstairs are the bedroom, another large room (which could also be divided into 2 rooms), and the bathroom. And in the basement a small bathroom or WC with shower, a small and a larger cellar room, and a large room as living space (which could also be divided into 2 rooms). However, it is on a slope, so the living room downstairs leads directly outside to a terrace and the garden. Just so you might be able to imagine it a little bit. I can hardly imagine anything smaller in terms of dimensions.