diff --git a/city_model_structure/city_object.py b/city_model_structure/city_object.py
index 091cabfb..ace50dae 100644
--- a/city_model_structure/city_object.py
+++ b/city_model_structure/city_object.py
@@ -224,4 +224,4 @@ class CityObject:
     Sensor list belonging to the city object
     :param value: [Sensor]
     """
-    self._sensors = value
\ No newline at end of file
+    self._sensors = value
diff --git a/city_model_structure/city_objects_cluster.py b/city_model_structure/city_objects_cluster.py
index be5397b0..665d94b2 100644
--- a/city_model_structure/city_objects_cluster.py
+++ b/city_model_structure/city_objects_cluster.py
@@ -5,6 +5,8 @@ Copyright © 2020 Project Author Pilar Monsalvete Alvarez de Uribarri pilar.mons
 """
 
 from abc import ABC
+from typing import List
+from city_model_structure.attributes.sensor import Sensor
 
 
 class CityObjectsCluster(ABC):
@@ -15,6 +17,7 @@ class CityObjectsCluster(ABC):
     self._name = name
     self._cluster_type = cluster_type
     self._city_objects = city_objects
+    self._sensors = []
 
   @property
   def name(self):
@@ -34,3 +37,19 @@ class CityObjectsCluster(ABC):
     else:
       self._city_objects.append(city_object)
     return self._city_objects
+
+  @property
+  def sensors(self) -> List[Sensor]:
+    """
+    Sensor list belonging to the city objects cluster
+    :return: [Sensor]
+    """
+    return self._sensors
+
+  @sensors.setter
+  def sensors(self, value):
+    """
+    Sensor list belonging to the city objects cluster
+    :param value: [Sensor]
+    """
+    self._sensors = value
diff --git a/non_functional_tests/test_sensors_factory.py b/non_functional_tests/test_sensors_factory.py
index 50144a6a..998d2504 100644
--- a/non_functional_tests/test_sensors_factory.py
+++ b/non_functional_tests/test_sensors_factory.py
@@ -8,7 +8,7 @@ from unittest import TestCase
 import pandas as pd
 from city_model_structure.city import City
 from city_model_structure.building import Building
-from city_model_structure.city_object import CityObject
+from city_model_structure.parts_consisting_building import PartsConsistingBuilding
 from imports.sensors_factory import SensorsFactory
 
 
@@ -39,12 +39,12 @@ class TestSensorsFactory(TestCase):
     city = City(lower_corner, upper_corner, srs_name)
     buildings.append(Building("EV", lod, surfaces, year_of_construction, function, lower_corner))
     buildings.append(Building("GM", lod, surfaces, year_of_construction, function, lower_corner))
+    buildings.append(Building("MB", lod, surfaces, year_of_construction, function, lower_corner))
     for building in buildings:
       city.add_city_object(building)
+    buildings_cluster = PartsConsistingBuilding("GM_MB_EV", buildings)
+    city.add_city_objects_cluster(buildings_cluster)
     return city
-    #virtual_building = CityObject("GM_MB_EV", lod, surfaces, lower_corner)
-    #virtual_building.type = 'Virtual'
-    #city.add_city_object(virtual_building)
 
   def test_city_with_sensors(self):
     SensorsFactory('cec', self._city, self._end_point).enrich()
@@ -52,10 +52,8 @@ class TestSensorsFactory(TestCase):
     SensorsFactory('ct', self._city, self._end_point).enrich()
     for city_object in self._city.city_objects:
       for sensor in city_object.sensors:
-        # force update last row
-        update = pd.DataFrame([['2020-01-19 23:55:00', '12345.0']], columns=["Date time", "Energy consumption"])
-        update = update.astype({"Date time": 'datetime64', "Energy consumption": 'float64'})
-        sensor.add_period(update)
-
-        row = sensor.measures.loc[sensor.measures["Date time"] == '2020-01-19 23:55:00']['Energy consumption'].iloc[0]
+        self.assertTrue(f'{row}' == '12345.0')
+
+    for city_objects_cluster in self._city.city_objects_clusters:
+      for sensor in city_objects_cluster.sensors:
         self.assertTrue(f'{row}' == '12345.0')