Cool thread, lots of advise from all directions!
As most Beeks find out right away or eventually come to understand, bees are 'wild' insects that humans found methods to relatively control with certain limitations, primarily by providing suitable housing. That is about the extent of our most basic input into their lives and our relationships with them.
It is the 'casting of swarms', despite our best efforts at prevention, that always remind us how 'wild' our bees really are.
With that perspective in mind; I personally believe that "Swarms are FREE" for the taking by anyone with a trap set out and offer this advise for the 'new' neighbor, besides being more neighborly ;), build some traps for themselves, (or 'you' could build him one for a 'welcome' gift) as others have also advised. GOOD LUCK, Sure hope it all works out…..you did say the neighbor was a newbee, just might take some time....