cost to rehab individual apts?

[Peter Fokas]

I have a 6 unit multi-family in Newark NJ and now looking at long term goals. Some of the units are in real need of updates. So figure as a tenant leaves will then update apartments Trying to assess costs of renovations.
1. new kitchen

2. new bathroom

3. new flooring- thinking of putting tiles with new plywood underneath

4. potentially new electric wiring

5. paint job

These are approx 500 to 600 sq foot apartments.

How much do you think improvements like this will cost me?

Not planning on doing anything with walls (at least all of them seem ok other than painting).