Dismantle Structure
Dismantle Structure is a command players can use for citizens to dismantle walls and certain structures. Once this command is selected, players can select walls of a building, roads and fortifications by clicking and dragging around them. Note that entire buildings cannot be selected and dismantled, as this only works on the walls of a building.
In-game description
"Removes structures (fortifications, walls, roofs and roads)."