Slopes, runoff and shallow rock
Hillside lots shape every decision. On a sloping yard a fence can be built in steps, with each panel level and the gap beneath it changing, or racked, with the panel angled to follow the ground. Which one works depends on the material and on how steep the grade is. Steps usually suit rigid panels, while racking suits rails that can flex.
Water runs downhill quickly after a heavy rain, and clay slows how fast it soaks in, so footings near swales or drainage paths need extra care. Rock can sit close to the surface in the hills around the cove, which sometimes calls for heavier drilling equipment and extra time for each post hole.
