What is a group or person called who "brings the house down" or "can bring the house down"?
closed as general reference by Matt Эллен, kiamlaluno, Zairja, Mahnax, RegDwighт♦ Nov 5 '12 at 16:22
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The Oxford English Dictionary’s definition is ‘to evoke such demonstrative applause as threatens or suggests the downfall of the building.’
I have always supposed it to be derived from the music hall, where a particularly good act might, with a little exaggeration, bring about such an event. It may now be found in wider contexts.
If you mean the company, contractor or person that demolishes your old house or building, then use demolisher or demolition guy(s), demolition contractor, etc.