Country house in good area (6)
I believe the answer is:
grange
'country house' is the definition.
(I've seen this before)
'good area' is the wordplay.
'good' becomes 'g' (abbreviation).
'area' becomes 'range' (range is a kind of area**).
'g'+'range'='GRANGE'
'in' acts as a link.
(Other definitions for grange that I've seen before include "farming complex" , "Country house with attached farm buildings" , "Ganger in country house with farm buildings" , "Country house and surrounding buildings" , "Country house/farm" .)