The photos don't show it, but the front of the block drains a bit to the left when looking at the house from the street. The driveway gets the water away, and the house is actually ~40cm off the ground at the front, and 1.8m off the ground at the back, so if there is any water gets there, it just flows straight under (not ideal, but as we put the path between the wall and house, it's going to slope away from the house with a pit drain, so any water that gets past the wall will flow around the house - better than it has been for the last two years). Our biggest storm since the Toowoomba floods of last January happened two nights ago...and tested the drainage 🙂