You need to make the buildings more flexible like use wood or steel instead of brick or concrete cause they are not flexible. Build triangle structures because triangles are the strongest shapes. You can add a mass damper on top of the building and an active tendon system on the bottom of the building because it will shift the weight around making the building steady. Also install base isolators underneath the sand. Base isolators will absorb the seismic waves. Base isolators are made if layers of steel and rubber wrapped around a lead core. It will prevent the waves from traveling through the building. You can also put flexible pipes which will prevent the pipes from breaking. If it breaks, waterlines and gas lines will leak
