I wouldn't be too concerned about letting in neighbours that I didn't know, but not too sure of a ladder! I am in a new build bungalow, with all white interior and new flooring throughout. Because it was pristine, I find that I am being extra careful to keep it looking good for as long as possible. This has made me more observant of how easy it is for people to scrape and chip walls and woodwork as they pass by! My DGC's know to be as careful as possible, within reason. It's no fun being landed with bills for gouges out of walls etc or repainting of surfaces. I recently had a carrier come to uplift a tall, narrow chest of drawers (damaged on receipt!). I removed the drawers and moved them and the frame near to the front door, then covered them in the bubble wrap they came in. I held my extra wide front door open back to the wall as the man carried the item out, but he still managed to knock a piece off the surface of my new door. It cost his company over £100 pounds to fix. With care, it would never have happened.