Hi, I'm looking at this job, the HO is looking to get a retaining wall 2' in height and 25' in length out of 8x8x16 cinder blocks. Additionally, a 6' high wood fence would be anchored to the retaining wall. My question, how deep should the footing be? I quoted a 16"W X 24"D concrete footing. I'm wondering if this is overkill or not? What size would you build the concrete footing? Is the width more important than the depth on a retaining wall/fence setup like this? Overall, the height of the wall and fence would be 8' The HO request the cinder blocks to be filled in with concrete. The job is on county property and usually retaining walls under 3ft do not require a permit. I'm not sure if the situation changes once a 6' wood fence is added, in regards to obtaining a permit. I'm going to call tomorrow. Any help would be appreciated, thanks!