I'm not sure what this means.
I'm looking at an ad. I call up the owner or management company. I offer to pay for any installation required. What exactly do I need to do - offer to have an electrician visit to inspect the system, then depending on the outcome decide if to rent it or not? In what circumstances would charging not be possible?
Or, if permission is given to charge an EV, rent the place (if I like it), and simply pay for an electrician to install whatever is needed?
Finding a rental that is already set up for EV charging will be almost impossible.
Finding a landlord (or worse, rental agent) who understands EV charging will likewise be almost impossible and given that it is easier for them to rent to the next guy in a hot market than to consider your request, asking for permission upfront is likely a non-starter.
I would suggest that you should look for a place based on location and amenities and during your visit, look at the circuit breaker panel. If it is Zinsco, Sylvania/GTE or FPE or Federal Pacific Electric, walk away because the wiring is unsafe throughout the house.
If it is not one of those bad panels, look at the breakers and see if there are any labeled 50 or 30 on their levers. If the stove is not electric, then look for the laundry area for a dryer plug. Also check out the garage for an existing dryer plug or welding outlet (something much larger than a normal duplex outlet) or even a 240V 12A outlet (same size as normal outlet but with two blades horizontal above the ground pin. If you find any of the above, you can charge at 240V - 40A, 24A or 12A.
Where is the panel? If close to the garage, and if there are unused breaker slots, then an additional 240V circuit for EV charging would be fairly inexpensive to add sometime after you have moved in. Take a clear picture of the panel to show to your favorite electrician for advice before signing the lease.
Ask what their policy is about you making modifications at your own expense like painting rooms, installing new curtains, etc. This will give you an idea how flexible they might be.
If you like the place and the management/landlord exhibits some flexibility and your electrician says that the panel can take a 240V breaker, then you could plan on moving in and later adding a charging outlet.