There are plenty of new home builds selling right now, in Las Vegas and Henderson. Most builders are trying to compete with short sale prices and some are offering added insentives to buyers, including closing costs and upgrades.
Not to many people are buying new homes in the Henderson area. There are just way to many good deals out there that most people opt to purchase a resale. Here is a link to my montly newsletter which should provide you with better information http://sgsellsvegas.housingtrendsenewsletter.com/default.cfm. You can play around with it and it's very informative. If you are in the market to buy or sell please contact me and I'll provide more detailed information.