Religious house seen in earlier years (6)
I believe the answer is:
priory
This clue is a double definition.
'religious house' is the first definition.
(priory can mean a monastery or nunnery)
'in earlier years' is the second definition.
(I've seen this before)
'seen' is the link.
(Other definitions for priory that I've seen before include "where all men are brothers?" , "Christian religious house subject to an abbey" , "Monastery or convent" , "Small monastery or nunnery" , "in earlier years" .)