diff --git a/backend/Property.py b/backend/Property.py
index 27b1e8f1..71d9e249 100644
--- a/backend/Property.py
+++ b/backend/Property.py
@@ -498,6 +498,7 @@ class Property(Definitions):
             "primary_energy_consumption": self.energy["primary_energy_consumption"],
             "co2_emissions": self.energy["co2_emissions"],
             "adjusted_energy_consumption": self.current_adjusted_energy,
+            "estimated": self.data.get("estimated", False)
         }
 
         return property_details_epc
diff --git a/backend/app/db/models/portfolio.py b/backend/app/db/models/portfolio.py
index 6f865381..f7c0370b 100644
--- a/backend/app/db/models/portfolio.py
+++ b/backend/app/db/models/portfolio.py
@@ -153,6 +153,7 @@ class PropertyDetailsEpcModel(Base):
     primary_energy_consumption = Column(Float)
     co2_emissions = Column(Float)
     adjusted_energy_consumption = Column(Float)
+    estimated = Column(Boolean, default=False)
 
 
 class PropertyDetailsSpatial(Base):