We did a 3-course wall staggered, and built our 4x8 foot duck house on top of it. It wasn't cinder blocks all around though, but just at the corners. That was in 2015, I've seen it fairly recently and it's still standing. Because it wasn't continuous it didn't retain water. We didn't use mortar. We used the stiff thick black metal garden panel fencing, and attached that to the wood siding of the duck house (which was framed with 2x4 studs. I think the hardware cloth was just held between the garden panels and the blocks due to the garden panels being attached.For those who have built a cinderblock base above the ground and a coop on top of it, do you have drainage issues? During a monsoon does it get water logged? We get brief but very heavy downpours. Would it trap a lot of water sitting right on caliche?
Also, did you use mortar? And how did you connect the HC to the cinder blocks?