Finding blueprints for a building isn’t always a simple matter. Not all documents are in digital format, and some of them may not even exist (which is especially true for older structures). The original blueprint may be in a box, inside a storage unit, or in the basement of a county clerk’s office. But because we live in a digital age, physical blueprints are no longer the standard. Newer designs are typically done with CAD or some other 3D modeling technology.