AFAIK Chelsea Meadows is Durham...assuming you are talking about the M/I Homes community, but I thought they were pretty much sold out...unless there are two Chelsea Meadows....
And as far as the new homes issue, any search site of MLS should have an age option - if you search years 2007-2008 you should get mostly new homes. When you pull up a home on the site I use, Fonville Morisey, it says "New Construction?" Y/N and gives an answer for each home.
EDIT - Just looked up Chelsea Meadows and it looks like they have a phase 2 starting now! (but it's still in Durham
)