Hi, In Dover, there are a few neighborhoods that get listed like that. Normally they are single family detached homes that are on land that is owned by all residents and the homeowner has use of his/her lot. It also is a way for buyers who want a detached single family home and want to belong to a home owners association that will plow, mow, mulch, and take out rubbish. Hope this helps. My name is Peggy Carter and I own the Coldwell Banker in downtown Dover. My cell is 603.396.2938.