with horses you have a lot to think about, inside hay storage, outside rain shelter, horse cleaning area, storage for equipment (saddles ect) storage for tractor/ equipment.
then you need to think what style of barn 1 story rectangle 2 story with a gambrele roof line open loft yes or no ect.
then you have to decide material steel, wood pole ect lots to think about
cheapest is a pole barn 2 story so hay storage on loft with part open to below for tossing down hay. lean too off one side for rain shelter when horses are out to pasture, at least one tack room with lockable door and GOOD flooring, (probably nice with a stall type sower & wash sink in there)
water frost proof hose bibs for drinking water & washing down. part of floor where the tack room shower wash down should be concrete preferably. rest can be wood stalls & dirt floors.
ok any how, k=make a lot of plans and then budget to what you can afford...
mark.m