Any pics? Would love to see how it turned out. I have been considering the same.
I have a large covered front porch and also a large back deck. I have been considering fencing under the back deck as it is about 10x20 and would be a nice shady space for them. Also, it is enclosed by my "dog pen" which is just a playpen for my indoor dog. That has 4 foot no climb horse fencing topped with 8000 volt electric tape. And my property has perimeter 5 strand electric tape fencing also. Small dogs hop right between the strands in the perimeter fence but can't get over the 4 foot no climb with electric on top. Big dogs get nailed getting through the perimeter fence and would get nailed trying to go over the no climb.
If nothing else, I would have good dog protection. See? Pic is from before we added the electric. I am planning on letting the big fat hens who can't get any air flying roam in here supervised. It is 200 feet of fencing in a large oval, so is a nice sized area.
My front porch has lattice already, so would be okay once they are grown up and we reinforce the eletric perimeter with the the 4x4 cattle type fencing topped with electric. And it is about 8.5' by about 30'. So a nice sized space for them. Not predator proof for nighttime, but might be a nice playpen for daytime. Lots of bugs under there too! And as the porch is covered, it would be a nice shelter from bad weather. I wonder if it would be warmer since it butts up to the house.....(pic was from after I added the railing...not yet painted!)
Maybe when I build my "real coop", I will use these as extra "playpens" to give them more space? Especially since I ended up with, uh, more than I expected.