How to design a house: basic rule
So there is a basic rule in designing a house: you have to start from a concept. Whether it is eco house, contemporary house, or minimalist house, how to design a house would be always started from a concept. From there a house designer may start creating a work plan, considering how much money s/he would spend for a design, and lastly, start execute the concept and then translate it into a real form, the house itself.
Design a house, of course, require someone to operate proper software. There are many software for a house designer to use, and while some of them may be free, many of software as such have specific license that has to be paid. Choose the right software that would actually help you design a house easily. Without such thing, software that will make your job easier, a design of a house won’t be likely finished. Nonetheless, it is a design concept which be the main core of how to design a house.