Mine live out my back door :) Wouldn't have it any other way, it's nice having them right there plus I don't like to share ;) We have a 12 stall barn with feed & tack room and washrack, separate hay barn. We have 5 pastures, smallest is a stud lot at 1 acre to the large ones that are not quite 10. We have an insulated indoor arena and a 150 x 300 outdoor arena (that also doubles as dry lot when needed) There is 17 acres of woods at the back of the property to ride in as well. Costs, don't want to go there, in a year generally enough to buy a new car...
Luckily I keep mine at our horse and they are all turned out together 24/7 on a 17 acre pasture, 5 horses and a pony..fall-spring they are on free choice high quality hay with grain year round. They seem to like it that way..They have trees along the fence line of one parture (ours is seperated in two areas, one smaller than the other. We also have a twoish acres area seperated from the others if we need to isolate a horse, there is also a stall in that area.