Cost to build multi family from a shell.

[Alex Davis]

Hi I'm looking for some rough numbers. I want to buy one of the many abandon buildings and turn it into a multi family apartment in downtown Detroit. I'm just looking for some guidance on what to expect to pay. My partner and I will be doing most all of the construction our selves. HVAC, plumbing, and roofing will most likely be the only things contracted out, yes I know those are major. I'm basically just asking what to expect as far as how much can I ball bark a build out per sq ft of a single unit. Any help is greatly appreciated.