Today many people live in apartments or small homes, but often narrow space makes them especially difficult to organize space just to store stuff. Built-in can be a real lifesaver. Built-in is a great way to combine storage and other functions without having to spend a lot of places because built-in advantage of every corner or a wall to get the most of your space. Besides as storage, built-in is also a great way to decorate the room. You can make a shelf built in anywhere like the kitchen, living room, bedroom or bathroom, just add a few ornaments or photo it will look beautiful in any room. Here are 20 smart ideas for built-in that would be the best solution of your small space!