Post and panel signs are a great way to inexpensively get your name in front of your office. Simply made but designed to last about 7-10 years.
Paint can be used to compliment the sign by either matching the posts to the sign or just helping it stand out. Put a couple of caps on top and stick it in the ground.
Keeping all you signs consistent is always a good idea, especially for a town that is sprucing up its public spaces and buildings. MDO is an exterior grade wood product designed just for the sign industry. Cut it, paint it, print on it or jig it out to a custom shape.