The requirement is to ban smoking inside the building and 25 feet away from entrances and air intakes. If the law only states that smoking in not permitted in the building, they still need either exterior signs prohibiting smoking 25 feet from the building or place designated smoking areas, such as ashtrays 25 feet away.
Historically, all we've needed to provide is a brief letter from the owner (or management) on their letterhead stating that the property is either 100% non-smoking, or that smoking is allowed somewhere and then state how and where and make sure that it aligns with the requirements.
No photos, diagrams or other documentation is usually submitted.