It looks like the property being advertised is a new build, which could be why there is no specific address. More than likely that floorplan can be built on multiple lots.
Also, what they mean by "No closing costs" is that they may be able to offer you seller concessions that would cover the fees that would normally be charged to purchase a home. These fees typically include things like loan origination fees, title fees, escrow fees, etc.
I sold newly built homes for over 5 years, so I know firsthand that there are a lot of ways you can structure a purchase agreement with a builder to make the purchase work for you! I'd be happy to share my ideas and experiences with you!
If you are interested in properties like this, please e-mail me and I would be happy to send you more detailed information about this home and other similar homes in that area!
Happy house hunting!