"With Building Costs Down, Now is the Time to Build a Custom Home" from rismedia.com makes a great point. Just as it is a good time to buy an existing home at today's lower prices, the cost for building custom are down as well. If either has been in the back of your mind, take advantage of today's opportunities. 
First Weber Group has long had relationships with many reputatble builders and even have a special section on firstweber.com devoted to those who want to build. Check out First Weber's Builder's Marketplace to search for a builder in your area or price range.