Most interior paints are latex with some trim paints being oil based.
As long as the finish on the car was waxed or poly protected, start by washing the areas with a good cleaning wash and a good pad, say like a MF applicator or even a foam pad to get a little bite. Keep the area flooded with wash soap. The Megs 00 High-Tech wash was used mostly for wet sanding lube, so this may be a good start. Keep the pad in check, in other words, once they start to lift off, clean the pad of the paint debris since it's hard. Work a small area at a time. Follow with a clay and same wash mix for lube. Make sure you check the clay, remove the paint chip if possible, or kneed the clay to a new fresh area.
If it's oil based, you may have to use a tar remover or other products such as WD40 to loosen the paint so you can remove it with a MF towel that will be thrown away.
As for cost associated with this, I would bill out the rate a local pro detailer would charge, no more. If however the paint on the vehicle is possibly damaged, which I do not think it will be, then a dealer must get involved as well as other body shops prices on refinish. I really don't think it will be damaged, just will take time to remove.
Once all paint is off, re-apply your wax/sealant right away and take more pics for documenting.
No one should "finger" your car, be it the painting contractor or apt management. They can see it as been covered in paint, no need for them to touch it.
Keep a cool head, be professional and just remove it and bill accordingly.
Regards,
Deanski
