I am not sure what my opinion is of this. Most or maybe all apartment or condo
complexes owners get irritated when they see someone working on their car in
the parking lot. Many have regulations.
I happen to live in one of these, and like to work on my car in the parking lot. People complain. Why do they care so much ? Why don't they mind their own business ? Why do they feel they need to report it to building management ? It's only once or twice a year, for half a day.
However, it wouldn't appeal to me to see a bunch of people working on their cars in the parking lot.
I have to go out at 5 am to avoid the security guard, when they have a shift change, and a couple of hours is open.