Dangerous building (8)
I believe the answer is:
firetrap
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dangerous building</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(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" .)