Utilize these existing structures or build new? (Pic heavy)

[Trefoil]

Before you buy hardware cloth check out wayfair (free shipping), amazon, and cutler poultry. Either of those buildings would work, but for either of them you need to bury hardware cloth around the perimeter of the building and if you are concerned about predators still trying to get in, extend the hardware cloth up a foot or two on the side of the building. That will take care of anything tunneling into the building. You are soo lucky, it looks like you have enough lumber to do whatever you decide. You can't use an arrow type stapler to secure the hardware cloth, coons will just pull it out.In the long run you will lose less chickens if you make their quarters secure and not even bother trying to kill off predators. Keep an eye on craigslist and your local paper, you should be able to score some chain link for the run reasonable/cheap and chain link will work as long as they aren't in there at night.

 

[lahowardjr]

I would definitely utilize the second, smaller building as a coop. A lot less work than the building. My coop looks a lot like it and is off the ground too. Use hardware cloth to secure the bottom like a skirt and keep the front open. Place your run in front of the building with a door access. It would also be easy to make a cut out and add accessible nesting boxes on the back side. This picture is not my coop but it was inspired from this

design in the coop section of this site. You may get an idea of what exactly I mean from looking at "new coop" in the medium section. I wish I had the small building to start off with like you have there. It would have saved me some $500.00+ in my construction.

 

[ShadyHillFarm]

Before you buy hardware cloth check out wayfair (free shipping), amazon, and cutler poultry. Either of those buildings would work, but for either of them you need to bury hardware cloth around the perimeter of the building and if you are concerned about predators still trying to get in, extend the hardware cloth up a foot or two on the side of the building. That will take care of anything tunneling into the building. You are soo lucky, it looks like you have enough lumber to do whatever you decide. You can't use an arrow type stapler to secure the hardware cloth, coons will just pull it out.In the long run you will lose less chickens if you make their quarters secure and not even bother trying to kill off predators. Keep an eye on craigslist and your local paper, you should be able to score some chain link for the run reasonable/cheap and chain link will work as long as they aren't in there at night.

Thank you for that advice. As for the hardware cloth, I'm assuming it's best to screw it in, correct?

I would definitely utilize the second, smaller building as a coop. A lot less work than the building. My coop looks a lot like it and is off the ground too. Use hardware cloth to secure the bottom like a skirt and keep the front open. Place your run in front of the building with a door access. It would also be easy to make a cut out and add accessible nesting boxes on the back side. This picture is not my coop but it was inspired from this

design in the coop section of this site. You may get an idea of what exactly I mean from looking at "new coop" in the medium section. I wish I had the small building to start off with like you have there. It would have saved me some $500.00+ in my construction.

Thank you for posting that link! I really really like that design. Definitely doable with what I already have.

 

[4 the Birds]

You can staple your cloth with a staple gun or hammer and staples. Many times horse fencing is on sale at country stores. This may be a good option along with chicken wire double on that. Sometimes hardware cloth can be pricey and it is not the most fun to work with.

 

[gjensen]

I would use the second building. I would replace what I had to and save what I could. Since it is just for chickens, I would strip it, puddy it caulk it, etc. Then paint it to include the roof.
I would knock the first one down before someone got hurt. Then I would take it apart piece by piece and use what can be salvaged. Looks like the makings of your run and the start to another project.
Open that second one up for clean air. Pour bagged concrete in the holes and reclaim it.