Price per sq ft to build in NJ

I am looking at an opportunity to build a duplex in northern NJ. Plans are in place and approved so right now I am trying to get an understanding of what price per sq ft is to build in NJ. Each unit would be roughly 2k sq ft and the lot is in pretty flat nothing too crazy. the build quality I would say could be builder grade but with some higher end finishes here and there since I would be building in an above average town. I would pick my spots and maybe use above average flooring in bathrooms and maybe use some granite in the kitchen but nothing super high end. If anyone is a builder or knows a good builder in NJ please let share their information with me so that I can reach out to them. Also, If anyone has recent experience with building costs in Nj, please let me know what price per sq ft you are paying. Thank you very much!