Clears of building, getting outside (8)
I believe the answer is:
alfresco
'outside' is the definition.
(I've seen this before)
'clears of building' is the wordplay.
'building' indicates an anagram.
'clears'+'of'='clearsof'
'clearsof' with letters rearranged gives 'ALFRESCO'.
'getting' acts as a link.
(Other definitions for alfresco that I've seen before include "where it's cool" , "exposed to the fresh air" , "Meal eaten in the outdoors" , "Open-air" , "Located outdoors" .)