Dangerous building (8)
I believe the answer is:
firetrap
'dangerous building' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for firetrap that I've seen before include "Building likely to burn easily" , "not built safely" , "Unsafe building" , "Building lacking sufficient exits in case of conflagration" , "Potentially dangerous (wooden) building" .)