[
  {
    "type": "city_building",
    "id": "house_09",
    "locations": [ "land" ],
    "overmaps": [
      { "point": [ 0, 0, 0 ], "overmap": "house_09_north" },
      { "point": [ 0, 0, 1 ], "overmap": "house_09_roof_north" },
      { "point": [ 0, 0, -1 ], "overmap": "basement_bionic_north" }
    ]
  }
]
