In my opinion, SSA is a bad idea because of all the extra costs it adds on, like a tax (sometimes it's added directly into the property taxes). This is a cost that the developer should have taken on or incorporated into the cost of the lot, but instead decided to be sly and make the homeowner pay it. Home values in SSAs have suffered particularly during this housing downturn.
In looking at the zip code you are interested in, I have the feeling you might be referring to the special tax for the Near East Side. The tax in that area is applied to the upkeep of the beautiful landscaped park and grounds of the development and is paid by everyone who lives there.