This is an amazing redstone machine which can be used for building a really simple cobblestone house. Even though it's probably easier to build the house by hand it's still cool to see the things which redstone really can do for you. Hopefully this machine can give you the basic guidelines for building something similar and perhaps even more advanced in your own worlds.
The cobblestone house size is a 15x15 box. It's not the most gracious house but it's more the automatic process of building it which is cool.
The house should take somewhere around 10-15 minutes to build. But it can be even slower than that if you have a less powerful device, e.g. an older phone.
A key functionality of the structure is the cobblestone generator.