diff --git a/src/c3nav/mapdata/render/engines/blender.py b/src/c3nav/mapdata/render/engines/blender.py
index 9a71efe2..67c6b3d8 100644
--- a/src/c3nav/mapdata/render/engines/blender.py
+++ b/src/c3nav/mapdata/render/engines/blender.py
@@ -259,6 +259,9 @@ class BlenderEngine(Base3DEngine):
             if geoms.on_top_of_id is None:
                 buildings = geoms.buildings
 
+                holes = geoms.holes.difference(restricted_spaces)
+                buildings = buildings.difference(holes)
+
                 self._add_polygon('Level %s' % geoms.short_label, buildings,
                                   geoms.lower_bound, geoms.upper_bound)
                 self._set_last_polygon_to_main()
diff --git a/src/c3nav/mapdata/render/renderdata.py b/src/c3nav/mapdata/render/renderdata.py
index b12cf9ff..e052fd9a 100644
--- a/src/c3nav/mapdata/render/renderdata.py
+++ b/src/c3nav/mapdata/render/renderdata.py
@@ -159,6 +159,8 @@ class LevelRenderData:
 
                 new_geoms = LevelGeometries()
                 new_geoms.buildings = crop_to.intersection(old_geoms.buildings)
+                if old_geoms.on_top_of_id is None:
+                    new_geoms.holes = crop_to.intersection(old_geoms.holes)
                 new_geoms.doors = crop_to.intersection(old_geoms.doors)
                 new_geoms.walls = crop_to.intersection(old_geoms.walls)
                 new_geoms.all_walls = crop_to.intersection(old_geoms.all_walls)