diff --git a/etl/hubspot/hubspot_deal_differ.py b/etl/hubspot/hubspot_deal_differ.py
index ba3dc27a..724a3e68 100644
--- a/etl/hubspot/hubspot_deal_differ.py
+++ b/etl/hubspot/hubspot_deal_differ.py
@@ -198,7 +198,9 @@ class HubspotDealDiffer:
     def check_for_magicplan_trigger(
         new_deal: Dict[str, str], old_deal: HubspotDealData
     ) -> bool:
-        raise NotImplementedError
+        new_outcome = (new_deal.get("outcome") or "").lower()
+        old_outcome = (old_deal.outcome or "").lower()
+        return new_outcome == "surveyed" and old_outcome != "surveyed"
 
     @staticmethod
     def _lodgement_completed(