I was able to convince my apartment community (Houston, TX) to install a private NEMA 14-50 outlet for me, powered by my unit's electrical meter so that I would pay for the actual electricity used. Although there aren't assigned parking spaces here, I can usually get one of the covered spots nearest my private outlet depending on the time of the day.
To facilitate the process and to help the apartment manager understand what I was asking for, I went to Home Depot and pre-purchased the
metal enclosure with mounted 14-50 outlet ($30) and a 50A two-phase circuit-breaker ($10).
Having something physical to show, a proposal for where on the wall it would be mounted, and that I had already determined that there was space in my breaker box for another circuit breaker helped out the discussion.
I was required to pay for the labor to install it by the commercial electrician selected by the apartment (only $530). They also needed me to sign an addendum to my lease saying that I agreed to leave the outlet installed when I move out, and that I would not leave it unattended while charging. (Being inside of the apartment is fine.)