diff --git a/hub/catalog_factories/costs_catalog_factory.py b/hub/catalog_factories/costs_catalog_factory.py
index de341991..a3896b2a 100644
--- a/hub/catalog_factories/costs_catalog_factory.py
+++ b/hub/catalog_factories/costs_catalog_factory.py
@@ -33,7 +33,6 @@ class CostsCatalogFactory:
   @property
   def catalog(self) -> Catalog:
     """
-    Return a cost catalog
-    :return: CostCatalog
+    :return: cost catalog (CostCatalog)
     """
     return getattr(self, self._catalog_type, lambda: None)
diff --git a/hub/catalog_factories/data_models/usages/schedule.py b/hub/catalog_factories/data_models/usages/schedule.py
index 73f03904..3127cf67 100644
--- a/hub/catalog_factories/data_models/usages/schedule.py
+++ b/hub/catalog_factories/data_models/usages/schedule.py
@@ -68,8 +68,7 @@ class Schedule:
   def day_types(self) -> Union[None, List[str]]:
     """
     Get schedule day types, as many as needed from:
-    ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday', 'holiday', 'winter_design_day',
-    'summer_design_day']
+    ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday', 'holiday', 'winter_design_day', 'summer_design_day']
     :return: None or [str]
     """
     return self._day_types
diff --git a/hub/city_model_structure/attributes/node.py b/hub/city_model_structure/attributes/node.py
index 0ba07501..590de2a5 100644
--- a/hub/city_model_structure/attributes/node.py
+++ b/hub/city_model_structure/attributes/node.py
@@ -52,7 +52,7 @@ class Node:
   @property
   def time_series(self) -> TimeSeries:
     """
-    Add explanation here
-    :return: add type of variable here
+    Get the time series associated with the node
+    :return: TimeSeries
     """
     return self._time_series
diff --git a/hub/city_model_structure/attributes/polygon.py b/hub/city_model_structure/attributes/polygon.py
index 5a2cf685..785213b5 100644
--- a/hub/city_model_structure/attributes/polygon.py
+++ b/hub/city_model_structure/attributes/polygon.py
@@ -287,7 +287,7 @@ class Polygon:
   def divide(self, plane):
     """
     Divides the polygon in two by a plane
-    :param plane: plane that intersects with self to divide it in two parts (Plane)
+    :param plane: that intersects with self to divide it in two parts (Plane)
     :return: Polygon, Polygon, [Point]
     """
     tri_polygons = Trimesh(vertices=self.vertices, faces=self.faces)
diff --git a/hub/city_model_structure/attributes/schedule.py b/hub/city_model_structure/attributes/schedule.py
index 638cd7ab..c36d94f8 100644
--- a/hub/city_model_structure/attributes/schedule.py
+++ b/hub/city_model_structure/attributes/schedule.py
@@ -124,8 +124,7 @@ class Schedule:
   def day_types(self) -> Union[None, List[str]]:
     """
     Get schedule day types, as many as needed from:
-    ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday', 'holiday', 'winter_design_day',
-    'summer_design_day']
+    ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday', 'holiday', 'winter_design_day', 'summer_design_day']
     :return: None or [str]
     """
     return self._day_types
diff --git a/hub/city_model_structure/building.py b/hub/city_model_structure/building.py
index 5a6e109e..5ee090ab 100644
--- a/hub/city_model_structure/building.py
+++ b/hub/city_model_structure/building.py
@@ -25,7 +25,7 @@ City = TypeVar('City')
 
 class Building(CityObject):
   """
-  Building(CityObject) class
+  Building class inherited from CityObject class
   """
   def __init__(self, name, surfaces, year_of_construction, function, terrains=None, city=None):
     super().__init__(name, surfaces)
@@ -575,6 +575,7 @@ class Building(CityObject):
   def usages_percentage(self):
     """
     Get the usages and percentages for the building
+    :return: str
     """
     _usage = ''
     for internal_zone in self.internal_zones:
@@ -620,7 +621,7 @@ class Building(CityObject):
   def heating_consumption(self):
     """
     Get energy consumption for heating according to the heating system installed in J
-    return: dict
+    :return: dict
     """
     if len(self._heating_consumption) == 0:
       for heating_demand_key in self.heating_demand:
@@ -636,7 +637,7 @@ class Building(CityObject):
   def cooling_consumption(self):
     """
     Get energy consumption for cooling according to the cooling system installed in J
-    return: dict
+    :return: dict
     """
     if len(self._cooling_consumption) == 0:
       for cooling_demand_key in self.cooling_demand:
@@ -652,7 +653,7 @@ class Building(CityObject):
   def domestic_hot_water_consumption(self):
     """
     Get energy consumption for domestic according to the domestic hot water system installed in J
-    return: dict
+    :return: dict
     """
     if len(self._domestic_hot_water_consumption) == 0:
       for domestic_hot_water_demand_key in self.domestic_hot_water_heat_demand:
@@ -700,7 +701,7 @@ class Building(CityObject):
   def distribution_systems_electrical_consumption(self):
     """
     Get total electricity consumption for distribution and emission systems in J
-    return: dict
+    :return: dict
     """
     if len(self._distribution_systems_electrical_consumption) != 0:
       return self._distribution_systems_electrical_consumption
@@ -780,7 +781,7 @@ class Building(CityObject):
   def onsite_electrical_production(self):
     """
     Get total electricity produced onsite in J
-    return: dict
+    :return: dict
     """
     orientation_losses_factor = {cte.MONTH: {'north': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
                                              'east': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
@@ -815,6 +816,7 @@ class Building(CityObject):
   def lower_corner(self):
     """
     Get building lower corner.
+    :return: [x,y,z]
     """
     return [self._min_x, self._min_y, self._min_z]
 
@@ -822,5 +824,6 @@ class Building(CityObject):
   def upper_corner(self):
     """
     Get building upper corner.
+    :return: [x,y,z]
     """
     return [self._max_x, self._max_y, self._max_z]
diff --git a/hub/city_model_structure/building_demand/internal_gain.py b/hub/city_model_structure/building_demand/internal_gain.py
index 229b7752..4570c274 100644
--- a/hub/city_model_structure/building_demand/internal_gain.py
+++ b/hub/city_model_structure/building_demand/internal_gain.py
@@ -42,7 +42,7 @@ class InternalGain:
   @property
   def average_internal_gain(self) -> Union[None, float]:
     """
-    Get internal gains average internal gain in W/m2
+    Get average amount of internal gain in W/m2
     :return:  None or float
     """
     return self._average_internal_gain
diff --git a/hub/city_model_structure/building_demand/lighting.py b/hub/city_model_structure/building_demand/lighting.py
index db52bb6b..b4352886 100644
--- a/hub/city_model_structure/building_demand/lighting.py
+++ b/hub/city_model_structure/building_demand/lighting.py
@@ -22,7 +22,7 @@ class Lighting:
   @property
   def density(self) -> Union[None, float]:
     """
-    Get lighting density in Watts per m2
+    Get lighting density in W/m2
     :return: None or float
     """
     return self._density
@@ -30,7 +30,7 @@ class Lighting:
   @density.setter
   def density(self, value):
     """
-    Set lighting density in Watts per m2
+    Set lighting density in W/m2
     :param value: float
     """
     if value is not None:
diff --git a/hub/city_model_structure/building_demand/occupancy.py b/hub/city_model_structure/building_demand/occupancy.py
index 46d34aa1..93c5d77c 100644
--- a/hub/city_model_structure/building_demand/occupancy.py
+++ b/hub/city_model_structure/building_demand/occupancy.py
@@ -23,7 +23,7 @@ class Occupancy:
   @property
   def occupancy_density(self) -> Union[None, float]:
     """
-    Get density in persons per m2
+    Get density in persons/m2
     :return: None or float
     """
     return self._occupancy_density
@@ -31,7 +31,7 @@ class Occupancy:
   @occupancy_density.setter
   def occupancy_density(self, value):
     """
-    Set density in persons per m2
+    Set density in persons/m2
     :param value: float
     """
     if value is not None:
@@ -40,7 +40,7 @@ class Occupancy:
   @property
   def sensible_convective_internal_gain(self) -> Union[None, float]:
     """
-    Get sensible convective internal gain in Watts per m2
+    Get sensible convective internal gain in W/m2
     :return: None or float
     """
     return self._sensible_convective_internal_gain
@@ -48,7 +48,7 @@ class Occupancy:
   @sensible_convective_internal_gain.setter
   def sensible_convective_internal_gain(self, value):
     """
-    Set sensible convective internal gain in Watts per m2
+    Set sensible convective internal gain in W/m2
     :param value: float
     """
     if value is not None:
@@ -57,7 +57,7 @@ class Occupancy:
   @property
   def sensible_radiative_internal_gain(self) -> Union[None, float]:
     """
-    Get sensible radiant internal gain in Watts per m2
+    Get sensible radiant internal gain in W/m2
     :return: None or float
     """
     return self._sensible_radiative_internal_gain
@@ -65,7 +65,7 @@ class Occupancy:
   @sensible_radiative_internal_gain.setter
   def sensible_radiative_internal_gain(self, value):
     """
-    Set sensible radiant internal gain in Watts per m2
+    Set sensible radiant internal gain in W/m2
     :param value: float
     """
     if value is not None:
@@ -74,7 +74,7 @@ class Occupancy:
   @property
   def latent_internal_gain(self) -> Union[None, float]:
     """
-    Get latent internal gain in Watts per m2
+    Get latent internal gain in W/m2
     :return: None or float
     """
     return self._latent_internal_gain
@@ -82,7 +82,7 @@ class Occupancy:
   @latent_internal_gain.setter
   def latent_internal_gain(self, value):
     """
-    Set latent internal gain in Watts per m2
+    Set latent internal gain in W/m2
     :param value: float
     """
     if value is not None:
diff --git a/hub/city_model_structure/building_demand/thermal_boundary.py b/hub/city_model_structure/building_demand/thermal_boundary.py
index 1ff00244..4b51516f 100644
--- a/hub/city_model_structure/building_demand/thermal_boundary.py
+++ b/hub/city_model_structure/building_demand/thermal_boundary.py
@@ -1,4 +1,4 @@
-"""
+  """
 ThermalBoundary module
 SPDX - License - Identifier: LGPL - 3.0 - or -later
 Copyright © 2022 Concordia CERC group
diff --git a/hub/city_model_structure/city.py b/hub/city_model_structure/city.py
index 97000fbb..75e2e177 100644
--- a/hub/city_model_structure/city.py
+++ b/hub/city_model_structure/city.py
@@ -91,7 +91,7 @@ class City:
   @property
   def region_code(self):
     """
-    Get city region name
+    Get city region code
     :return: str
     """
     return self._get_location().region_code
@@ -117,7 +117,7 @@ class City:
   @name.setter
   def name(self, value):
     """
-    Set city name
+    Set city's name
     :param value:str
     """
     if value is not None:
@@ -210,7 +210,7 @@ class City:
 
   def building_alias(self, alias) -> list[Building | list[Building]] | None:
     """
-    Retrieve the city CityObject with the given alias alias
+    Retrieve the city CityObject with the given alias
     :alert: Building alias is not guaranteed to be unique
     :param alias:str
     :return: None or [CityObject]
@@ -232,8 +232,8 @@ class City:
   def add_city_object(self, new_city_object):
     """
     Add a CityObject to the city
-    :param new_city_object:CityObject
-    :return: None or not implemented error
+    :param new_city_object of parameter type:CityObject
+    :return: None or NotImplementedError
     """
     if new_city_object.type == 'building':
       if self._buildings is None:
@@ -256,7 +256,7 @@ class City:
   def remove_city_object(self, city_object):
     """
     Remove a CityObject from the city
-    :param city_object:CityObject
+    :param city_object: of class CityObject
     :return: None
     """
     if city_object.type != 'building':
@@ -289,7 +289,7 @@ class City:
   def load(city_filename) -> City:
     """
     Load a city saved with city.save(city_filename)
-    :param city_filename: city filename
+    :param city_filename: which indicates the filename of the city
     :return: City
     """
     if sys.platform == 'win32':
@@ -304,8 +304,8 @@ class City:
   def load_compressed(compressed_city_filename, destination_filename) -> City:
     """
     Load a city from compressed_city_filename
-    :param compressed_city_filename: Compressed pickle as source
-    :param destination_filename: Pickle file as destination
+    :param compressed_city_filename: which is a Compressed pickle as source
+    :param destination_filename: which is Pickle file as destination
     :return: City
     """
     with open(str(compressed_city_filename), 'rb') as source, open(str(destination_filename), 'wb') as destination:
@@ -317,7 +317,7 @@ class City:
   def save(self, city_filename):
     """
     Save a city into the given filename
-    :param city_filename: destination city filename
+    :param city_filename: is the destination filename of the city
     :return: None
     """
     with open(city_filename, 'wb') as file:
@@ -335,7 +335,7 @@ class City:
   def region(self, center, radius) -> City:
     """
     Get a region from the city
-    :param center: specific point in space [x, y, z]
+    :param center: specific point in space [x, y, z] that indicates the center of the wanted location
     :param radius: distance to center of the sphere selected in meters
     :return: selected_region_city
     """
@@ -445,7 +445,7 @@ class City:
   def add_city_objects_cluster(self, new_city_objects_cluster):
     """
     Add a CityObject to the city
-    :param new_city_objects_cluster:CityObjectsCluster
+    :param new_city_objects_cluster of parameter type:CityObjectsCluster
     :return: None or NotImplementedError
     """
     if new_city_objects_cluster.type == 'buildings':
@@ -463,6 +463,7 @@ class City:
   def copy(self) -> City:
     """
     Get a copy of the current city
+    :return: City
     """
     return copy.deepcopy(self)
 
@@ -508,9 +509,8 @@ class City:
   @property
   def energy_systems_connection_table(self) -> Union[None, DataFrame]:
     """
-    Get energy systems connection table which includes at least two columns: energy_system_type and associated_building
-    and may also include dimensioned_energy_system and connection_building_to_dimensioned_energy_system
-    :return: DataFrame
+    Get energy systems connection table which includes at least two columns: energy_system_type and associated_building and may also include dimensioned_energy_system and connection_building_to_dimensioned_energy_system
+    :return: DataFrame with at least two columns
     """
     return self._energy_systems_connection_table
 
diff --git a/hub/city_model_structure/city_object.py b/hub/city_model_structure/city_object.py
index c18a4aa0..928d494d 100644
--- a/hub/city_model_structure/city_object.py
+++ b/hub/city_model_structure/city_object.py
@@ -64,7 +64,7 @@ class CityObject:
   @property
   def type(self) -> str:
     """
-    Get city object type
+    Get city object type, for example, building
     :return: str
     """
     return self._type
@@ -135,7 +135,7 @@ class CityObject:
   def surface(self, name) -> Union[Surface, None]:
     """
     Get the city object surface with a given name
-    :param name: str
+    :param name: str representing the city object
     :return: None or Surface
     """
     for s in self.surfaces:
@@ -146,7 +146,7 @@ class CityObject:
   def surface_by_id(self, identification_number) -> Union[Surface, None]:
     """
     Get the city object surface with a given name
-    :param identification_number: str
+    :param identification_number: str representing the city object
     :return: None or Surface
     """
     for s in self.surfaces:
@@ -293,6 +293,7 @@ class CityObject:
   def neighbours(self) -> Union[None, List[CityObject]]:
     """
     Get the list of neighbour_objects and their properties associated to the current city_object
+    :return: List[CityObject]
     """
     return self._neighbours
 
diff --git a/hub/city_model_structure/city_objects_cluster.py b/hub/city_model_structure/city_objects_cluster.py
index 57a13f55..f8da4d9d 100644
--- a/hub/city_model_structure/city_objects_cluster.py
+++ b/hub/city_model_structure/city_objects_cluster.py
@@ -13,7 +13,7 @@ from hub.city_model_structure.city_object import CityObject
 
 class CityObjectsCluster(ABC, CityObject):
   """
-  CityObjectsCluster(ABC) class
+  CityObjectsCluster(ABC) class is inherited from CityObject class
   """
   def __init__(self, name, cluster_type, city_objects):
     self._name = name
@@ -46,7 +46,7 @@ class CityObjectsCluster(ABC, CityObject):
 
   def add_city_object(self, city_object) -> List[CityObject]:
     """
-    add new object to the cluster
+    add a new object to the cluster
     :return: [CityObjects]
     """
     if self._city_objects is None:
diff --git a/hub/city_model_structure/greenery/vegetation.py b/hub/city_model_structure/greenery/vegetation.py
index b7d93f0a..a3ab55f0 100644
--- a/hub/city_model_structure/greenery/vegetation.py
+++ b/hub/city_model_structure/greenery/vegetation.py
@@ -81,7 +81,7 @@ class Vegetation:
   @property
   def plants(self) -> List[Plant]:
     """
-    Get list plants in the vegetation
+    Get a list of plants in the vegetation
     :return: List[Plant]
     """
     return self._plants
diff --git a/hub/city_model_structure/iot/sensor_measure.py b/hub/city_model_structure/iot/sensor_measure.py
index cca700ad..9fdd4b99 100644
--- a/hub/city_model_structure/iot/sensor_measure.py
+++ b/hub/city_model_structure/iot/sensor_measure.py
@@ -20,6 +20,7 @@ class SensorMeasure:
   def latitude(self):
     """
     Get measure latitude
+    :return: float
     """
     return self._latitude
 
@@ -27,6 +28,7 @@ class SensorMeasure:
   def longitude(self):
     """
     Get measure longitude
+    :return: float
     """
     return self._longitude
 
@@ -41,5 +43,6 @@ class SensorMeasure:
   def value(self):
     """
     Get sensor measure value
+    :return: float
     """
     return self._value
diff --git a/hub/city_model_structure/parts_consisting_building.py b/hub/city_model_structure/parts_consisting_building.py
index 05c8d1aa..76e7049f 100644
--- a/hub/city_model_structure/parts_consisting_building.py
+++ b/hub/city_model_structure/parts_consisting_building.py
@@ -12,7 +12,7 @@ CityObject = TypeVar('CityObject')
 
 class PartsConsistingBuilding(CityObjectsCluster):
   """
-  PartsConsistingBuilding(CityObjectsCluster) class
+  PartsConsistingBuilding class inherited from CityObjectsCluster class
   """
   def __init__(self, name, city_objects):
     self._cluster_type = 'building_parts'