I like the dog kennel idea. Beagles would have the BnB's rep ruined after a month or two of howling at stars, the moon, bats, moths ...
Sign: "BnB Please Keep to Left" etc. Start with a friendly posting and reach out to the new owners.
I'd might ask what I could do to help them out. Sort of a back door way to show them you believe in teamwork. New owners might be waiting for retirement to move in themselves. I doubt if they'd take my word for it what a great neighbor they'd be getting.

Show 'em your good side right away. :2cents: t o g