Hi everyone!

I currently own some vacant land located in the Madison WI area that is already zoned for apartment building. I would love to build 2 4-units or even a larger 8-12 unit building but I have not done any new construction projects yet. So I am trying to get a ROUGH idea what it costs to build a 4 unit building or larger? Thinking of making all the units 2 bedroom 1 bathroom with garages, I know this very wide open question with many variables but am hoping someone out there has built something similar lately? I have read vaguely online prices vary from $90-$100 per square foot but have not found any facts to back that up yet. Greatly appreciate any and all input, thank you!!!