Far too much silver in church residence (7)
I believe the answer is:
cottage
'residence' is the definition.
'far too much silver in church' is the wordplay.
'far too much' becomes 'OTT' (over the top).
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'in' means one lot of letters goes inside another.
'church' becomes 'CE' (abbreviation for Church of England).
'ott'+'ag'='ottag'
'ottag' put within 'ce' is 'COTTAGE'.
(Other definitions for cottage that I've seen before include "Country residence" , "Small living space" , "To make a home" , "Small house with a single storey" , "building" .)