Price per sq.ft. on complete rehab??

[Marie Shaug]

Hi!  I was wondering if someone could help me with a general estimate per sq. ft. on a complete rehab of a property.  I know it would be a ball park figure but even that would be helpful.  I bought the house at the last tax sale...  1410 sf.   Slab foundation, has considerable termite damage in kitchen & bathroom, so 2x4s will need replacing in places.  Needs new roof, windows, electric panel, new wiring, and some plumbing.  Outside will need siding, and of course the usual new kitchen/bathroom cabinets, etc.   It is a 1954 build, which I will be holding as a rental.  So it doesn't need to be fancy.  Nice, clean & functional!  What would you estimate the rehab at, per sf?