A building; the church has one leased (6)
I believe the answer is:
chalet
'a building' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'the church has one leased' is the wordplay.
'the church' becomes 'ch' (common abbreviation).
'has' says to put letters next to each other.
'one' becomes 'a'.
'leased' becomes 'let'.
'ch'+'a'+'let'='CHALET'
Can you help me to learn more?
(Other definitions for chalet that I've seen before include "Wooden house with projecting eaves" , "Wooden house of Alpine regions" , "Alpine lodge" , "Kind of mountain cabin in Switzerland" , "Holiday cabin" .)