Imagine a vampire getting frustrated with a realtor because this is the fourth time they've arrived at a house they're interested in to do a walkthrough but the owners aren't home and the realtor, as someone who doesn't have ties to the memories created in that home, can't invite him in.

This also has fascinating implications for house flippers. If you only live there while working on it, have you not amassed enough "home power" to keep vampires out? Does the power of your previous home follow you to a new address if it's mostly the same decor?