Hoses out a mess in the hop kiln building (4,5)
I believe the answer is:
oast house
'building' is the definition.
(oast house is a kind of building)
'hoses out a mess' is the wordplay.
'mess' indicates an anagram.
'hoses'+'out'+'a'='hosesouta'
'hosesouta' is an anagram of 'OAST-HOUSE'.
'in the hop kiln' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for oast house that I've seen before include "Hops in here to dry" , "See this building" .)