Pay to take up residence (6)
I believe the answer is:
settle
I believe this is a double definition.
'pay' is the first definition.
(as in settling a bill)
'take up residence' is the second definition.
(as in settling in a new town)
'to' is the link.
(Other definitions for settle that I've seen before include "Fix; reside" , "Pay up or sink down" , "N Yorks town" , "Resolve; alight" , "Finish fidgeting" .)