Hacienda managed by church (5)
I believe the answer is:
ranch
'hacienda' is the definition.
(I've seen this in another clue)
'managed by church' is the wordplay.
'managed' becomes 'ran' (I've seen this before).
'by' means one lot of letters go next to another.
'church' becomes 'ch' (common abbreviation).
'ran'+'ch'='RANCH'
(Other definitions for ranch that I've seen before include "North American stock farm" , "American house?" , "Large US cattle farm" , "Farm on a large scale" , "Spread" .)