diff --git a/properties.py b/properties.py
new file mode 100644
index 0000000..610f56b
--- /dev/null
+++ b/properties.py
@@ -0,0 +1,267 @@
+"""
+Properties module to be used by mockup building
+SPDX - License - Identifier: LGPL - 3.0 - or -later
+Copyright © 2023 Concordia CERC group
+Project Coder Pilar Monsalvete Alvarez de Uribarri pilar.monsalvete@concordia.ca
+"""
+
+from __future__ import annotations
+
+
+class EnergySystem:
+  """
+  EnergySystem class
+  """
+  def __init__(self):
+    self._generation_system = None
+    self._demand_types = None
+
+  @property
+  def generation_system(self) -> GenerationSystem:
+    """
+    Get building generation system
+    :return: GenerationSystem
+    """
+    return self._generation_system
+
+  @generation_system.setter
+  def generation_system(self, value):
+    """
+    Set building generation system
+    :param value: GenerationSystem
+    """
+    self._generation_system = value
+
+  @property
+  def demand_types(self):
+    """
+    Get demand types covered by an energy system
+    :return: [str]
+    """
+    return self._demand_types
+
+  @demand_types.setter
+  def demand_types(self, value):
+    """
+    Set demand types covered by an energy system
+    :param value: [str]
+    """
+    self._demand_types = value
+
+
+class GenerationSystem:
+  """
+  GenerationSystem class
+  """
+
+  def __init__(self):
+    self._generic_generation_system = None
+
+  @property
+  def generic_generation_system(self) -> GenericGenerationSystem:
+    """
+    Get generic generation system
+    :return: GenericGenerationSystem
+    """
+    return self._generic_generation_system
+
+  @generic_generation_system.setter
+  def generic_generation_system(self, value):
+    """
+    Set generic generation system
+    :param value: GenericGenerationSystem
+    """
+    self._generic_generation_system = value
+
+
+class GenericGenerationSystem:
+  """
+  GenericGenerationSystem class
+  """
+
+  def __init__(self):
+    self._fuel_type = None
+
+  @property
+  def fuel_type(self):
+    """
+    Get fuel type of generic generation system
+    :return: str
+    """
+    return self._fuel_type
+
+  @fuel_type.setter
+  def fuel_type(self, value):
+    """
+    Set fuel type of generic generation system
+    :param value: str
+    """
+    self._fuel_type = value
+
+
+class ThermalZone:
+  """
+  ThermalZone class
+  """
+
+  def __init__(self):
+    self._thermal_boundaries = None
+    self._total_floor_area = None
+
+  @property
+  def thermal_boundaries(self) -> [ThermalBoundary]:
+    """
+    Get thermal boundaries
+    :return: [ThermalBoundary]
+    """
+    return self._thermal_boundaries
+
+  @thermal_boundaries.setter
+  def thermal_boundaries(self, value):
+    """
+    Set thermal boundaries
+    :param value: [ThermalBoundary]
+    """
+    self._thermal_boundaries = value
+
+  @property
+  def total_floor_area(self):
+    """
+    Get total floor area in m2
+    :return: float
+    """
+    return self._total_floor_area
+
+  @total_floor_area.setter
+  def total_floor_area(self, value):
+    """
+    Get total floor area in m2
+    :param value: float
+    """
+    self._total_floor_area = value
+
+
+class ThermalBoundary:
+  """
+  ThermalBoundary class
+  """
+
+  def __init__(self):
+    self._type = None
+    self._opaque_area = None
+    self._window_ratio = None
+
+  @property
+  def type(self):
+    """
+    Get thermal boundary type
+    :return: str
+    """
+    return self._type
+
+  @type.setter
+  def type(self, value):
+    """
+    Set thermal boundary type
+    :param value: str
+    """
+    self._type = value
+
+  @property
+  def opaque_area(self):
+    """
+    Get thermal boundary opaque area in m2
+    :return: float
+    """
+    return self._opaque_area
+
+  @opaque_area.setter
+  def opaque_area(self, value):
+    """
+    Set thermal boundary opaque area in m2
+    :param value: float
+    """
+    self._opaque_area = value
+
+  @property
+  def window_ratio(self):
+    """
+    Get thermal boundary window ratio
+    :return: float
+    """
+    return self._window_ratio
+
+  @window_ratio.setter
+  def window_ratio(self, value):
+    """
+    Set thermal boundary window ratio
+    :param value: float
+    """
+    self._window_ratio = value
+
+
+class Roof:
+  """
+  Roof class
+  """
+
+  def __init__(self):
+    self._solid_polygon = None
+    self._solar_collectors_area_reduction_factor = None
+
+  @property
+  def solid_polygon(self) -> Polygon:
+    """
+    Get solid polygon
+    :return: Polygon
+    """
+    return self._solid_polygon
+
+  @solid_polygon.setter
+  def solid_polygon(self, value):
+    """
+    Set solid polygon
+    :param value: Polygon
+    """
+    self._solid_polygon = value
+
+  @property
+  def solar_collectors_area_reduction_factor(self):
+    """
+    Get solar-collectors-area reduction factor
+    :return: float
+    """
+    return self._solar_collectors_area_reduction_factor
+
+  @solar_collectors_area_reduction_factor.setter
+  def solar_collectors_area_reduction_factor(self, value):
+    """
+    Set solar-collectors-area reduction factor
+    :param value: float
+    """
+    self._solar_collectors_area_reduction_factor = value
+
+
+class Polygon:
+  """
+  Polygon class
+  """
+
+  def __init__(self):
+    self._area = None
+
+  @property
+  def area(self):
+    """
+    Get polygon area in m2
+    :return: float
+    """
+    return self._area
+
+  @area.setter
+  def area(self, value):
+    """
+    Set polygon area in m2
+    :param value: float
+    """
+    self._area = value