Block in front of a humble dwelling (8)
I believe the answer is:
bungalow
'dwelling' is the definition.
(I've seen this before)
'block in front of a humble' is the wordplay.
'block' becomes 'bung' (bung is a kind of block).
'in front of' means one lot of letters go next to another.
'humble' becomes 'low' (synonyms).
'bung'+'a'+'low'='BUNGALOW'
(Other definitions for bungalow that I've seen before include "One-storied house" , "One-storeyed house" , "One-storeyed building" , "Type of house" , "One-floor house" .)