Ask an electrician to add a meter just before your wallplug. It will monitor only you and you can pay back the electricity to the building manager once a year.
That one cost about 120$ (Centron Itron CL-200) but is for 240 volts. I`d say 1hre of work if sufficient.
Something else I`ve seen if your call is fully electric is just check the total KM of you car once a year on the odometer. Then calculate how many kwh that relates according to your car. Yes you`ll pay for electricity you got from elsewhere to your buiding association however it may be cheaper than paying for a meter... It`s win win for all. Buiding gets more money, you don`t pay the meter and no need to change anything.
Then when more people have electric cars in a couple of years in your building you`ll have some leverage to do a proper install that is future proof.