Yes, there are listings for new homes. Typically the builders will list one or two models online.
I would be happy to email you a list of new homes that currently on the market for sale.
If your considering a certain area it's best to work with a agent because they have all the updated information about new developments and all new homes either coming on the market or already on the market for sale. If you need an agent in your area I would be happy to refer one to you just let me know.
Re/Max Parkside Real Estate
(Recently featured on HGTV's show House Hunters)
Unless you are trying to purchase a new home without an agent, or purchase an existing home using the listing agent, you may have the search process backwards. You don't have to find a home before you contact an agent. A Realtor® can help you find the right home in the right condition with the right features. Usually you will find that home much more quickly.
If you feel that finding the home yourself will save you money, you may be right, but probably not. The odds really are against you. This is a much more complicated process than many people believe and there are numerous crossroads at which you can lose ground financially, sometimes without even noticing it. Having someone in your corner can make a world of difference.
I won't go into all the possible pitfalls of representing yourself in this answer, but I would encourage you to read my recent blog post about buying a new home without assistance. (The link is below.) Then you can make up your own mind.
Yes, there are listings for new homes. When you state "renovations" do you mean upgrades on that home? If you are in the market for a new home then I would encourage you to obtain as much information as possible on that home. I have helped buyers for new homes in the past. Yes, you should contact an experienced real estate professional to help you.