I have worked with new construction for years. First, you should use a lender that you feel confident and comfortable with and of course one that can actually get results. In new construction, sometimes the builder works with a specific lender because they may have programs or incentives that are offered specifically for new construction. It also depends if the property is a single family, condo or townhome as well as other factors regarding occupancy. Do your homework, let the prospecting lender know that the property you are considering is new construction as well as the property type.
In addition, surround yourself with a professional team that can guide you through this process. Work with a realtor, your personal advocate/negotiator-regardless what others may say, new construction is negotiable, you won't know unless you ask. Builders of new construction most often use their own contracts, therefore, don't overlook your right to an attorney. The attorney fee can cost you less than a potential issue in the future and she/he can review that bulders contract on your behalf. Last but not least, even though it is new construction, it does not mean that it is perfect. Hire a home inspector to come through, they can check the mechanicals of the home, appliances, electric and so on.
If you are looking for an advocate, check me out online, http://www.bairdwarner.com/Sondra.Savino