diff --git a/backend/documents_parser/tests/test_extractor.py b/backend/documents_parser/tests/test_extractor.py
index 934488614..21a68c24b 100644
--- a/backend/documents_parser/tests/test_extractor.py
+++ b/backend/documents_parser/tests/test_extractor.py
@@ -985,6 +985,92 @@ class TestRoofSpaceRoomInRoof:
         assert rir.flat_ceilings is not None
         assert [f.insulation_known for f in rir.flat_ceilings] == [False]
 
+    # The Simplified-approach RIR block ("Are details of the room in roof
+    # known? No" → "Roof room type: RR type 2"), gables + common walls only,
+    # no slopes/flat ceilings. Verbatim from accuracy fixture 499538003156
+    # (78 North Road), including the mid-block "Page 8" break and the noise
+    # lines the surveyor tool interleaves between a key and its value.
+    _RIR_SIMPLIFIED_TYPE2_BLOCK = [
+        "Are there rooms in the roof?",
+        "Yes",
+        "Roof room age range:",
+        "C: 1930 - 1949",
+        "Floor area of room in roof:",
+        "25.43 m²",
+        "Are details of the room in roof known?",
+        "No",
+        "Roof room type:",
+        "RR type 2 (With the Accessible areas of continuous common walls)",
+        "Gable wall 1 length:",
+        "5.82 m",
+        "Gable wall 1 height:",
+        "2.72 m",
+        "Gable wall 1 type:",
+        "Party",
+        "Gable wall 2 length:",
+        "5.82 m",
+        "Gable wall 2 height:",
+        "2.72 m",
+        "Gable wall 2 type:",
+        "Party",
+        "Common wall 1 length:",
+        "4.37 m",
+        "Page 8",
+        "",
+        "Common wall 1 height:",
+        "2.34 m",
+        "Common wall 2 length:",
+        "4.37 m",
+        "Common wall 2 height:",
+        "2.34 m",
+    ]
+
+    def test_roof_room_type_label_is_captured(self) -> None:
+        # Arrange — fixture 1's roof space with the Simplified RIR block
+        # spliced in place of its "rooms in the roof? No" lodging.
+        lines = load_text_fixture()
+        idx = lines.index("Are there rooms in the roof?")
+        spliced = lines[:idx] + self._RIR_SIMPLIFIED_TYPE2_BLOCK + lines[idx + 2 :]
+
+        # Act
+        rir = (
+            PasHubRdSapSiteNotesExtractor(spliced)
+            .extract_roof_space()
+            .main_building.room_in_roof
+        )
+
+        # Assert
+        assert rir is not None
+        assert (
+            rir.roof_room_type
+            == "RR type 2 (With the Accessible areas of continuous common walls)"
+        )
+        # Simplified lodgement: gables + common walls, no roof-going surfaces.
+        assert rir.slopes is None
+        assert rir.flat_ceilings is None
+        assert rir.common_walls == [
+            RoomInRoofSurfaceDetail(length_m=4.37, height_m=2.34),
+            RoomInRoofSurfaceDetail(length_m=4.37, height_m=2.34),
+        ]
+
+    def test_detailed_lodgement_has_no_roof_room_type(self) -> None:
+        # Arrange — the Detailed §3.10 block (slopes/flat ceilings lodged)
+        # never carries a "Roof room type:" line.
+        lines = load_text_fixture()
+        idx = lines.index("Are there rooms in the roof?")
+        spliced = lines[:idx] + self._RIR_BLOCK + lines[idx + 2 :]
+
+        # Act
+        rir = (
+            PasHubRdSapSiteNotesExtractor(spliced)
+            .extract_roof_space()
+            .main_building.room_in_roof
+        )
+
+        # Assert
+        assert rir is not None
+        assert rir.roof_room_type is None
+
     def test_no_rooms_in_roof_leaves_detail_absent(self) -> None:
         # Arrange / Act — fixture 1 as lodged ("No").
         detail = PasHubRdSapSiteNotesExtractor(
diff --git a/datatypes/epc/surveys/pashub_rdsap_site_notes.py b/datatypes/epc/surveys/pashub_rdsap_site_notes.py
index 33c691e5a..8822800d8 100644
--- a/datatypes/epc/surveys/pashub_rdsap_site_notes.py
+++ b/datatypes/epc/surveys/pashub_rdsap_site_notes.py
@@ -138,6 +138,10 @@ class RoomInRoofDetail:
     slopes: Optional[List[RoomInRoofSurfaceDetail]] = None
     common_walls: Optional[List[RoomInRoofSurfaceDetail]] = None
     flat_ceilings: Optional[List[RoomInRoofSurfaceDetail]] = None
+    # The "Roof room type:" label, lodged only on the Simplified approach
+    # ("Are details of the room in roof known? No" → RdSAP §3.9.2 Type 1/2/3).
+    # None on a Detailed §3.10 lodgement (per-surface slopes/flat ceilings).
+    roof_room_type: Optional[str] = None
 
 
 @dataclass