Next round of Houdini fun, this time focused more on VEX point and instance manipulation to create most of the building growth and collapse. The smoke/dust cloud used the pyro shockwave as a base, with a few settings tweaked for this scale and view.
Rendered with Karma XPU again, with the extra speedy 20.5 version
A quick flipbook test of the building growth
Another flipbook test of the smoke burst