Cold interior to be renovated as standard (9)
I believe the answer is:
criterion
'standard' is the definition.
(synonyms)
'cold interior to be renovated' is the wordplay.
'cold' becomes 'c' (eg on taps).
'to be renovated' indicates an anagram.
'interior' is an anagram of 'riterion'.
'c'+'riterion'='CRITERION'
'as' acts as a link.
(Other definitions for criterion that I've seen before include "Standard; model" , "London theatre?" , "Standard, reference point" , "Standard by which something can be judged" , "Touchstone" .)