Portable Horse Loafing Sheds (Barns) available with or without tack room. Sizes available from 10'x12' up to 14'x50'. Options for divider walls, close in stalls, stall doors, gates and more available! Made by our talented Amish builders at D&M! Which size will work for you? Horse Loafing Shed: 10'x12': $4,153 12'x20': $6,278 12'x24': $7,056 14'x42": $13,260 14'x50': $15,221 Sizes available in-between. Possible to leave ends off for longer sizes. - Tack Room: 10'x6': $1,392 12'x6' $1,468 14'x6': $1,638. Longer tack room sizes available! Single Bubble Insulation roof: $0.60/sq. ft.