One used in building a new abode (5)
I believe the answer is:
adobe
'one used in building' is the definition.
'adobe' can be an answer for 'building' (I've seen this before). I'm not sure about the 'one used in' bit.
'a new abode' is the wordplay.
'a new' is an anagram indicator.
'abode' with letters rearranged gives 'ADOBE'.
Can you help me to learn more?
(Other definitions for adobe that I've seen before include "Mexican mud and straw brick, and the hut made of it" , "Clay used for sun-dried bricks" , "Building material of clay and straw dried in the sun" , "Clay for mud bricks" , "house" .)