It looks like a nice coop, but that's just the outside. It's probably a good choice to house your chickens. But you can't, in most circumstances, just plop that out there and put the chickens in. You will need to secure it in such a way that nothing can dig under to get inside. Hardware cloth all the way around, screwed to the bottom tightly, and set down under the ground a foot, then place heavy rocks all the way around it, would be my attempt at that security.
My coop sits on very rocky...as in impossible to dig rocky, soil. I put hardware cloth all the way around, then instead of sinking it in the soil, it spreads outward over the top of the soil, about 12-15". Then I placed as heavy a rock as I could lift all the way around it, on top of that hardware cloth. (In many cases, the rocks are stacked or piled up.) That was 6 months ago, and so far it has worked. Nothing has dig under.
Know your particular possible predators, their habits, and your soil, then decide on how to secure your coop and pen.
That house looks nice...better than some people live in around here.