diff --git a/hub/city_model_structure/attributes/plane.py b/hub/city_model_structure/attributes/plane.py
index 25a4ec3f..700be8fb 100644
--- a/hub/city_model_structure/attributes/plane.py
+++ b/hub/city_model_structure/attributes/plane.py
@@ -17,9 +17,6 @@ class Plane:
   """
 
   def __init__(self, origin, normal):
-    # todo: other options to define the plane:
-    #  by two lines
-    #  by three points
     self._origin = origin
     self._normal = normal
     self._equation = None
diff --git a/hub/city_model_structure/building_demand/surface.py b/hub/city_model_structure/building_demand/surface.py
index dc392160..285393e3 100644
--- a/hub/city_model_structure/building_demand/surface.py
+++ b/hub/city_model_structure/building_demand/surface.py
@@ -287,7 +287,6 @@ class Surface:
     """
     Raises not implemented error
     """
-    # todo: check https://trimsh.org/trimesh.collision.html as an option to implement this method
     raise NotImplementedError
 
   def divide(self, z):