Greek character in starter home (3)
I believe the answer is:
rho
'greek character' is the definition.
(letter from the Greek alphabet)
'in starter home' is the wordplay.
'in' indicates the answer is hidden within the clue.
'RHO' can be found hidden inside 'starter home'.
(Other definitions for rho that I've seen before include "Greek letter R" , "Gr. letter written as P" , "Greek letter used as symbol for density" , "Greek P" , "17th Greek letter" .)