Though good, he takes an age getting a house (6)
I believe the answer is:
parson
'though good he takes an age getting a house' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'though good he' is the wordplay.
'though good' becomes 'par' (I am not sure about this - if you are sure you should believe this answer much more).
'he' becomes 'Son'.
'par'+'son'='PARSON'
Can you help me to learn more?
(Other definitions for parson that I've seen before include "Anglican clergyman" , "Minister of religion" , "Churchman" , "man of the church" , "service provider" .)