Order quality horse shelter kits, horse shelter plans or prefab run in sheds from jamaica cottage shop today! whether raising chickens and rabbits or cows and horses, protection from the elements is essential for keeping animals healthy and productive.. Our horse barn kits include premium quality material, delivered and unloaded on your jobsite. we include staging lists by wall and roof section for simple confirmation you received all the material needed as you break down the packages and stage the site for construction.. 8-stall barn with storage space (3200 sq ft) sample horse barn design. this sample floor plan is for a steel barn measuring 80' x 40' comprising of eight 14' x 14' horse stalls a 14' x 24' feed/tack area a 14' x 24' wash rack and a 12' x 80' center aisle..