There are a lot more choices for you in 20148. I highly recommend that you contact an experienced agent to help you through the process. The builder pays the commission so it is at no charge to you. My last two settlements where on new townhouses in Ashburn, plus I live in a townhouse in Ashburn. Please feel free to look at my website and contact me if you would like to have a no pressure conversation about your real estate goals.
NV Homes has a good location but it is not a planned community. They do not have a community center pools etc, If you really want a gr8 community I would suggest Loudoun Valley by Toll bros excellent community. But in any choice I would rate it:
1) Loudoun Valley
3) Stone bridge