If he is assessed as having capacity, he can decide where he wants to live.
If he is assessed as having lost capacity a best interests meeting should be held if there is any question of him being moved.
If you Google his LA you may find some documentation.
The documentation for Kent
http://www.kent.gov.uk/__data/assets/word_doc/0020/10865/mca-best-interests-meeting.doc
is typical.
Scroll down for Statutory Best Interests Checklist.
If he is assessed as having lost capacity a best interests meeting should be held if there is any question of him being moved.
If you Google his LA you may find some documentation.
The documentation for Kent
http://www.kent.gov.uk/__data/assets/word_doc/0020/10865/mca-best-interests-meeting.doc
is typical.
Scroll down for Statutory Best Interests Checklist.