Thinking about the perfect house for a young family is one of the most interesting architectural tasks. What is the ideal size ? shape? The house should be both functional, timely and accessible. Our attempt to answer this question – a duplex for two families with an area of 100 m2 each, with the maximum millet and concise design scheme on a very small area (10×17 m for each of the parts). In today’s world, the emphasis is shifting from property ownership and property in general to gifts, self-improvement, the search for emotions, so in our opinion, this is the type of single-family housing the future.