It might. Talk to your area reviewer before doing anything. Even placing something as innocent as a scrap of paper is going to bring strange folks, (us! ), to your courthouse, holding suspicious looking devices. I believe the guidelines that prohibit caches in places such as courthouses, also apply to sections of a multicache.
Another possibility presents itself;
Is there some kind of historical plaque at the courthouse? If so, you could use the text in that plaque to give the coordinates to the final stage, and you'd have a puzzle that would probably get approved. Use something similar to a book cypher, where "1/7/4" equals 1st line, 7th word, 4th letter. "23/3/8" = 23rd line, 3rd word, 8th letter. Etc, etc.
Good luck!
Thanks, that book cipher could really help me out, there are like 12+ historical plaques in front of the courthouse, but luckily they are a good 75 -100 yards away from the front door.