I get it 100%, the flat I lived in at the timne was part of a complex, everyone knew I was into bikes but I didn't make (much) mess or (much) noise, the 2 x 4 was just laying on the ground in front of my shed, I told folk what I was up to and no-one commented, let alone complained. Quoting my own earlier post "make up some wooden ramps & lay them on the ground as you enter / leave your garage, prop them up just inside the door when not in use". In other words as long as whatever precations you take are not permanent fixtures and don't get in other folks' way, likely no-one will be bothered. I find it's often a good idea to launch a 'preventative strike' as it were and mention to folk, especially the local 'nosey parker' or those most likely to complain or create stress, that you are just trying to protect you car & not build a massive garage, even if you'd like to. Easier to keep folk 'on side' as much as possible, helps make the (Golf) world go 'round....