He fills his estate with beautiful things! (8)
I believe the answer is:
aesthete
'he fills his estate with beautiful things' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'he fills his estate' is the wordplay.
I cannot really see how this works, but
'he' is present in the answer.
an anagram of 'estate' is 'aestte' which is within the left over letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for aesthete that I've seen before include "One has a special appreciation of art and beauty" , "Person with great appreciation of the beautiful" , "Person seeing beauty in art" , "person of culture" , "Person appreciating the beauty of art" .)