But, assuming you mean replacing all the interior finishes (electrical/plumbing fixtures, cabinets, flooring, countertops, appliances, doors, paint, etc), you're probably looking at $20-35/sf. 

The roof, AC units, tiles, cabinets, etc. have been replaced in the past couple years and no major work is needed.

Walls, painted white and cabinets sanitized or painted to remove stains and residue, New light bulbs with natural color, not the LED type, Fix floor tiles if necessary.

Im talking using the same cabinets, countertops, plumbing fixtures, flooring, tile, paint colors.To me it would just make the project go a lot smoother. 

We'll be using this same form to inspect your unit when you leave.Specifically, here's a list of items you should thoroughly clean before vacating:[ ] Floors[ ] sweep/mop laminate floors[ ] vacuum carpets and rugs (shampoo if necessary)[ ] mop kitchen and bathroom floors[ ] Walls, baseboards, ceilings, and built-in shelves[ ] Kitchen cabinets, countertops and sink, stove and oven--inside and out [ ] Refrigerator--clean inside and out, empty it of food[ ] Bathtubs, showers, toilets, and plumbing fixtures[ ] Doors, windows, and window coverings[ ] Other _________________________________________________________If you have any questions as to the type of cleaning we expect, please let us know.Please don't leave anything behind--that includes bags of garbage, clothes, food, newspapers, furniture, appliances, dishes, plants, cleaning supplies, or other items that belong to you.Please be sure you have disconnected phone and utility services, canceled all newspaper subscriptions, and sent the post office a change of address form.Once you have cleaned your unit and removed all your belongings, please call us to make arrangements to return all keys.

I have a recommendation for a cabinet guy send me a note.Problem with contractors is they are a bit like good nanny's.  

And you might have the added challenge that your bathrooms have the same cabinets and white tile.  

I have worked on a number of flips, everything from SFH, duplexes, mobile homes, I even specialize in high end cabinet refinishing.

What color are your cabinets?

Thus, we're looking for a good home for the materials from our existing home, including cabinetry, interior doors, door & cabinet hardware, plumbing fixtures, lighting hardware, granite countertops, windows, window shutters, appliances, etc...