diff --git a/backend/app/db/functions/recommendations_functions.py b/backend/app/db/functions/recommendations_functions.py
index ae5d0a5a..4eaf4a88 100644
--- a/backend/app/db/functions/recommendations_functions.py
+++ b/backend/app/db/functions/recommendations_functions.py
@@ -67,37 +67,46 @@ def create_plan_recommendations(session, plan_id, recommendation_ids):
 
 
 def upload_recommendations(session, recommendations_to_upload, property_id):
-    uploaded_recommendation_ids = []
+    # Prepare data for bulk insert for Recommendation
+    recommendations_data = [
+        {
+            "property_id": property_id,
+            "type": rec["type"],
+            "description": rec["description"],
+            "estimated_cost": rec["cost"],
+            "default": rec["default"],
+            "starting_u_value": rec.get("starting_u_value"),
+            "new_u_value": rec.get("new_u_value"),
+            "sap_points": rec["sap_points"]
+        }
+        for rec in recommendations_to_upload
+    ]
 
-    for rec in recommendations_to_upload:
-        new_recommendation = Recommendation(
-            property_id=property_id,
-            type=rec["type"],
-            description=rec["description"],
-            estimated_cost=rec["cost"],
-            default=rec["default"],
-            starting_u_value=rec.get("starting_u_value"),
-            new_u_value=rec.get("new_u_value"),
-            sap_points=rec["sap_points"]
-        )
-        session.add(new_recommendation)
-        uploaded_recommendation_ids.append(new_recommendation)
+    session.bulk_insert_mappings(Recommendation, recommendations_data)
 
-    # Flush to get the IDs for the newly created recommendations
+    # To get the IDs of the newly inserted recommendations, we need to flush the session
     session.flush()
 
-    # Create recommendation-materials
-    recommendation_materials = []
-    for rec, recommendation in zip(recommendations_to_upload, uploaded_recommendation_ids):
-        for part in rec["parts"]:
-            recommendation_material = RecommendationMaterials(
-                recommendation_id=recommendation.id,
-                material_id=part["id"],
-                depth=part["depths"][0] if part["depths"] else None,
-            )
-            recommendation_materials.append(recommendation_material)
+    # Map the uploaded_recommendation_ids with the original data for reference
+    uploaded_recommendation_ids = [rec.id for rec in session.query(Recommendation).filter(
+        Recommendation.property_id == property_id,
+        Recommendation.description.in_([rec["description"] for rec in recommendations_to_upload])
+    )]
 
-    session.add_all(recommendation_materials)
+    # Prepare data for bulk insert for RecommendationMaterials
+    recommendation_materials_data = [
+        {
+            "recommendation_id": recommendation_id,
+            "material_id": part["id"],
+            "depth": part["depths"][0] if part["depths"] else None,
+        }
+        for rec, recommendation_id in zip(recommendations_to_upload, uploaded_recommendation_ids)
+        for part in rec["parts"]
+    ]
+
+    session.bulk_insert_mappings(RecommendationMaterials, recommendation_materials_data)
+
+    # Commit all changes
     session.commit()
 
-    return [rec.id for rec in uploaded_recommendation_ids]
+    return uploaded_recommendation_ids