What's transformed homes and is good-looking (8)
I believe the answer is:
handsome
'good-looking' is the definition.
('handsome' can be a synonym of 'good-looking')
'what's transformed homes and' is the wordplay.
'what's transformed' indicates anagramming the letters.
'homes'+'and'='homesand'
'homesand' anagrammed gives 'HANDSOME'.
'is' is the link.
(Other definitions for handsome that I've seen before include "Fit" , "Striking" , "Fine-looking" , "beautiful" , "Pleasing in appearance" .)