diff --git a/losscalculator/damage_calculator.py b/losscalculator/damage_calculator.py
index 65f083276ebaab2d773ca5103185113d3755630e..f18eb5b33e5de074c5230ed9ad9a1406e817de74 100644
--- a/losscalculator/damage_calculator.py
+++ b/losscalculator/damage_calculator.py
@@ -40,6 +40,7 @@ def damage_calculator(
     interpolation_method="linear",
     result_filepath="damage_result.csv",
     use_xml_fragilities=True,
+    aggregation=True,
 ):
     """
     This function computes the probabilities of occurrence (PoO) of damage states for a scenario
@@ -104,7 +105,22 @@ def damage_calculator(
             row[(i + 1)] for row in damage_by_assets
         ]
 
-    exposure.to_csv(result_filepath, index=False)
+    if aggregation:
+        aggregated = exposure.groupby(["id", "building_geometry", "tile_id", "tile_geometry"])[
+            [
+                "number",
+                "structural",
+                "night",
+                "structural_no_damage",
+                "structural_slight",
+                "structural_moderate",
+                "structural_extensive",
+                "structural_complete",
+            ]
+        ].sum()
+        aggregated.to_csv(result_filepath)
+    else:
+        exposure.to_csv(result_filepath, index=False)
 
 
 def main():
@@ -184,8 +200,14 @@ def main():
         "--overwrite",
         required=False,
         action="store_true",
-        help="Result file exists. Choose another name or set --overwrite"
-        + "to overwrite the existing result file.",
+        help="overwrite result file if it already exists",
+    )
+    parser.add_argument(
+        "-a",
+        "--no-aggregation",
+        required=False,
+        action="store_true",
+        help="do not aggregate the results for each building (detailed results for debugging)",
     )
     parser.add_argument(
         "-t",
@@ -209,6 +231,7 @@ def main():
     exposure_filepath = args.exposure
     result_filepath = args.results
     overwrite_result_file = args.overwrite
+    aggregation = not args.no_aggregation
     taxonomy_map_filepath = args.taxonomy_map
 
     if command == "version":
@@ -265,6 +288,7 @@ def main():
             interpolation_method,
             result_filepath,
             use_xml_fragilities,
+            aggregation,
         )
         print("Execution time of the script", (datetime.datetime.now() - startTime))
     else: