Home Building Prices Are New Home Prices Negotiable On A House That Is Already Built If Yes How Much?

Are new home prices negotiable on a house that is already built if yes how much? - home building prices

I am looking for a new home in Raleigh, North Carolina area. I and my wife is on the market to buy a house. We (good credit and have a good payment). The houses already built in the new districts reported prices. Is it negotiable?