My experience is that unless your neighbors are complete butts, much is forgiven so long as you don't leave the mess out with nothing going on. I done a few parking-lot maintenance jobs, and the trick was always leaving the car looking like I could drive it away. I pulled apart the Prelude's cooling system outside my apartment once, and no one realized it wasn't drivable for a week while I waited for parts.
The flip side was when I had the Suburban (back when it was running) parked outside the same apartment...I routinely got warnings that my "derelict vehicle" would be towed, to which I responded by jumping in the truck and driving it over to the office to ask what derelict they were talking about.
