With a program that you install on your computer you can "play" to design your own house, becoming an architect of your own home. An exercise that can be very useful to think about your house and anticipate what you want to convey to the architect or technician who you will commission the project.
Anyone with imagination and a computer can draw the ground floor and the heights, create three-dimensional images, using these computer design programs.
These software programs cannot replace an architect, but can nevertheless help you visualize your home. Some of these programs are also free.
Here you have the programs: