I've been working at this for over a year myself. I think you need to either have a circuit connected to the owner's breaker panel and meter, or a system that keeps track of use/consumption if power comes from a common property circuit. I've got a FLO X5 in my trunk right now, waiting to go to the condo. It includes use of a *free* cloud based data collection site and the FLO talks to it via that data connection system that runs on power lines, back to your router (forget the name).
The X5 is fine for your own exclusive use, if you can control it (lock it), since power could come from the common property's power meter and the residents won't be stuck to buy you power. You see, that's what the big issue was for me... ensuring the strata didn't pay for a single kWh of power going to my car. Worse yet, nobody wants to ask the strata management company to read a digital meter, so the cloud system was much better received.
The next model above the X5 is the CORE something-or-other. It includes an RFID reader and similar cloud access (although I'm not clear on whether it's included free of charge or not). That one would let several people use the same charge post and keep track of the power consumed by each user.
The X5 allows you to load share with two units. The CORE does 4 I think. What this all boils down to is, if you're doing new construction, installing conduit to the parking lot with the idea of load balancing is probably the right move. The charge equipment is evolving rapidly... I mention the units above because they appeared on the scene late in my work to get a charge station allowed by the strata.