Safety and equal treatment are, of course, very important. Landlords will, however, eventually likely have to install charging methods. If they can install solar or other sustainable charging, they'll end up amortizing their investment and attract those who can afford the new electric vehicles — all that while helping the climate.
Interesting considerations concerning landlords and their tenants with electric cars:
Standard 110-Volt plugs in garages may be of widely varying qualities and not sufficiently robust for the power draw of continuous plug-in car charging;
In California and elsewhere, landlords must install a sub-meter if they are legally to charge tenants for electricity used--which costs money;
If one tenant is allowed to charge a plug-in car, that same privilege may have to be extended to all tenants;
Depending on the building's rate plan, additional use could kick it into a higher-cost rate bracket; and
Landlords do not provide fuel for gasoline vehicles, so why should they provide it for electric cars?