Making a chicken house by using recycled building materials is a handy and recommended technique. The workload isn’t very different from a conventional structure, but you will save plenty of money on the materials. Check out this project from Lone Grove, Oklahoma, which used 3 wood pallets together in order to make a 42 by 126 inches floor.
Follow the instructions from the tutorial and you should have no problems building a similar structure. Now, your chickens have a brand new home with little money and you can focus on something else in your household.