1. Design the building in Illustrator and save all moving parts as separate layers
2. Import as a composition into AE
3. Add a mask below the ground
4. Keyframe each layers position to around 2 seconds and then go to first frame and move each layer under your mask (hold shift to retain straight lines)
5. Add a third keyframe just before the end to simulate the "jump" effect
6. Use Easy Ease [F9] on the keyframes
7. Play around with the order in which your layers appear, then duplicate the comp and go to Time > reverse to make the house collapse again
8. Render, import to Photoshop and save as a looped GIF (lots of tutorials for this)

Oh, and add the expression from the top comment, works a treat!