We save as much of an existing home as we can...Sometimes to a fault!
Not sure how we are going to use most of these bricks, or rocks from this site, but we would rather keep them around while we figure that out.
We carefully pulled all the rabbeted fir sheathing off the house so we can get new FSC certified plywood directly onto the studs for the full shear value. This gave us a stockpile of wood that we will clean, seal, and use as accent walls in the new home.
Other builders might not take the time to do this, but we like the idea of having connections from the old home to the new one.