How to add onto coop ?

[S n M Poultry]

That works too here is mine:

It looks like poo right now because of the coking i did to water proof it.

 

[nccatnip]

Henry- have you ever looked at Mother Earth News? They had some pretty cool tractors that were super easy to make.

 

[gobbles!]

I think you're really onto something with that dog house! Try Craigslist if you're looking for one, you can find a lot of really cheap or even free dog houses there.