diff --git a/datatypes/epc/domain/tests/test_from_site_notes.py b/datatypes/epc/domain/tests/test_from_site_notes.py
index 96e5620e5..1ef7569d9 100644
--- a/datatypes/epc/domain/tests/test_from_site_notes.py
+++ b/datatypes/epc/domain/tests/test_from_site_notes.py
@@ -926,3 +926,23 @@ class TestPasHubMainHeatingControlCoding:
 
         # Act / Assert
         assert _control_type(main) == control_type
+
+    def test_unrecognised_control_label_raises_naming_the_label(self) -> None:
+        # Arrange — a Controls label the boiler table does not cover (e.g. the
+        # cohort's lone community-charging control). It must strict-raise
+        # `UnmappedPasHubLabel` at the boundary, naming the label, so the gap is
+        # a one-line lookup addition here rather than a raw string resurfacing
+        # as the calculator's `UnmappedSapCode`.
+        from datatypes.epc.domain.mapper import UnmappedPasHubLabel
+
+        raw = load("pashub_rdsap_site_notes_example1.json")
+        raw["heating_and_hot_water"]["main_heating"][
+            "controls"
+        ] = "Charging system linked to use of community heating"
+        survey = from_dict(PasHubRdSapSiteNotes, raw)
+
+        # Act / Assert
+        with pytest.raises(
+            UnmappedPasHubLabel, match="Charging system linked to use of community"
+        ):
+            EpcPropertyDataMapper.from_site_notes(survey)