Steel Building for Farm Equipment

Ever since we lease out our farm to a few retirees, our farm equipment has multiplied. The thing with old people arh, they are very absent-minded, they will leave the equipment all over the farm and when they can't find them, they started looking for me. I hardly go to the farm, how would I know. If the equipments really went missing, chances that they have been stolen is quite high. There's this drug addict that often goes around people's garbage pit to look for scrap metal to sell. Must suggest to the Uncle's to rise up a steel building for their farm equipment for safe keeping.