Does your Investigator group end up building their own "headquarters"? Of course, those pathetic failure Investigator Groups that got TPK'ed in their first couple of scenarios need not answer this question.
I'm asking about the Investigators who have survived several scenarios, and have racked up seasoned experience as anti-Mythos veterans. Do they eventually build some kind of private retreat? A minor urban "fortress" protected by a couple Elder Signs? A small hideout cabin in the lonely woods of Massachusetts? Do they hire a well-trusted butler and a highly-trusted security guard who will not panic at the first sight of a byakhee?