Barn Owls Portable Buildings provide a new take on portable buildings with many sizes, styles, and finishes to choose from. EJ's Flooring has several structures available on-site. Barn Owls portable buildings come with a 7 year front-to-back warranty. Purchase outright or Rent-to-Own with no credit check and 24, 36, 48 or 60 month terms available. Free set up and delivery.