diff --git a/etl/customers/stonewater/Wave 3 Preparation.py b/etl/customers/stonewater/Wave 3 Preparation.py
index b660ab64..1973cbd8 100644
--- a/etl/customers/stonewater/Wave 3 Preparation.py	
+++ b/etl/customers/stonewater/Wave 3 Preparation.py	
@@ -294,7 +294,7 @@ def extract_building_parts_summary(text):
     # Pattern to extract each building part, starting from Main Property and including extensions
     building_part_pattern = re.compile(
         r"(Main Property|\d+(?:st|nd|rd|th) Extension)\s*"
-        r"(.*?)(?=\d+(?:st|nd|rd|th) Extension|5\.0 Conservatory)",
+        r"(.*?)(?=\d+(?:st|nd|rd|th) Extension|5\.0 Conservatory|$)",
         re.DOTALL
     )