Costs to build 1 bedroom units

[Nicholas U.]

I have a number of small multifamily properties at this point and I believe I am ready to start investing in something a bit larger.  An opportunity came up for me on a multi-use building (retail/residential) in which the 1st and 2nd floors are done but the 3rd floor is just open at this point.  It is about 5000 square feet but I am trying to figure out how much it would cost per unit to build each 1 bedroom apartment.  Has anyone done something like this before and give me some general ideas on costs for something like this in Indiana.  

Electrical/Plumbing/Kitchen/Bathroom/etc...   

I have done some research but the number variance is pretty crazy.