Add an Overhang
He has also gone on to say that building a small overhang over the entrance of the bunker would be a great addition. This is an excellent idea for those who live in cold regions where it snows or rains a lot. It can also be used to keep critters away from the walkway.
The Cost
Building a bunker isn’t going to be as reasonable as some other DIY projects. However, the cost is incredibly fair if you think of what you’re building. For Wayne, he spent $12,500 building his DIY bunker, which isn’t bad considering its functionality.