Building permit plot plan is a comprehensive plan to show proposed improvements on a plot of land such as a new house, house addition, retaining wall or garage. It includes property information such as lot area, easements, building setbacks, existing structures, flood zone and possibly topography and sediment/erosion control measures, depending on the requirements of the jurisdiction. Building permit plot plan is a guide that will ensure that the proposed development plans meet with existing authoritative codes for local building and zoning requirements.