I was fortunate enough to find four of the six at a yearly local farm sale, the other two I purchased new from a local feed/tack store. If you google stall gates, some various manufacturers pop up, and you can search for local suppliers. As I said, they are half size gates for full size horses, I just lowered them for the minis. The center aisle was constructed of hexagon shaped rubber pavers I found on craigs list used(bargain). We actually had just the 25x40 foot pavilion portion of the barn done with the correct posts to make it into a barn. I did the rest myself, cut costs wherever I could, using locals that ruff cut lumber and all. My husband just didn't have time to help working six days a week, so it was on my shoulders, LOL. Thanks for the compliments. since I am down to my two minis, they each have a 10 x10, my one soon to be two come late august, big horses have 10x20s, and there is a 10x25"' overhang in the front. It may be hard to see in the photos, but the walls between the stalls had wood channels at the fronts and backs, the walls were removable and slid in or out of the channels.
All the hay and feed is kept in my old Amish made small barn that was a 12x24 that I built two 10x10 stalls and a small tack room off of making it a 22x24' building. Seems odd having so much empty space since I am down to just two minis and one big girl for now.