diff --git a/datatypes/epc/domain/tests/test_from_site_notes.py b/datatypes/epc/domain/tests/test_from_site_notes.py
index 772d5e18..abc2742b 100644
--- a/datatypes/epc/domain/tests/test_from_site_notes.py
+++ b/datatypes/epc/domain/tests/test_from_site_notes.py
@@ -570,3 +570,36 @@ class TestFromSiteNotesVentilation:
     def test_draught_lobby(self, result: EpcPropertyData) -> None:
         # ventilation.draught_lobby: false
         assert result.sap_ventilation.draught_lobby is False
+
+
+class TestFromSiteNotesFloorConstruction:
+    """
+    Fixture: pashub_rdsap_site_notes_example1.json
+    Floor: Suspended not timber, As Built insulation, Ground Floor type.
+    """
+
+    @pytest.fixture
+    def survey(self) -> PasHubRdSapSiteNotes:
+        return from_dict(
+            PasHubRdSapSiteNotes, load("pashub_rdsap_site_notes_example1.json")
+        )
+
+    @pytest.fixture
+    def result(self, survey: PasHubRdSapSiteNotes) -> EpcPropertyData:
+        return EpcPropertyDataMapper.from_site_notes(survey)
+
+    def test_floor_type(self, result: EpcPropertyData) -> None:
+        # building_construction.floor.floor_type: "Ground Floor"
+        assert result.sap_building_parts[0].floor_type == "Ground Floor"
+
+    def test_floor_construction_type(self, result: EpcPropertyData) -> None:
+        # building_construction.floor.floor_construction: "Suspended, not timber"
+        assert result.sap_building_parts[0].floor_construction_type == "Suspended, not timber"
+
+    def test_floor_insulation_type_str(self, result: EpcPropertyData) -> None:
+        # building_construction.floor.floor_insulation_type: "As Built"
+        assert result.sap_building_parts[0].floor_insulation_type_str == "As Built"
+
+    def test_floor_u_value_known(self, result: EpcPropertyData) -> None:
+        # building_construction.floor.floor_u_value_known: false
+        assert result.sap_building_parts[0].floor_u_value_known is False