diff --git a/src/bonsai/bonsai/bim/module/geometry/data.py b/src/bonsai/bonsai/bim/module/geometry/data.py
index 5f84838e14..0c8ba8eec1 100644
--- a/src/bonsai/bonsai/bim/module/geometry/data.py
+++ b/src/bonsai/bonsai/bim/module/geometry/data.py
@@ -52,7 +52,11 @@ class ViewportData:
             ("OBJECT", "IFC Object Mode", "", "OBJECT_DATAMODE", 0),
             ("EDIT", "IFC Edit Mode", "", "EDITMODE_HLT", 1),
         ]
-        if not obj or not tool.Blender.is_editable(obj):
+        if (
+            not obj
+            or not tool.Blender.is_editable(obj)
+            or ((element := tool.Ifc.get_entity(obj)) and tool.Geometry.is_locked(element))
+        ):
             return obj_mode
         return mesh_modes
 
diff --git a/src/bonsai/bonsai/bim/module/spatial/prop.py b/src/bonsai/bonsai/bim/module/spatial/prop.py
index 6959f24992..161130b877 100644
--- a/src/bonsai/bonsai/bim/module/spatial/prop.py
+++ b/src/bonsai/bonsai/bim/module/spatial/prop.py
@@ -31,6 +31,7 @@ from bpy.props import (
     CollectionProperty,
 )
 import bonsai.tool as tool
+import bonsai.bim.handler
 import bonsai.core.geometry
 import ifcopenshell
 import ifcopenshell.util.element
@@ -125,6 +126,8 @@ def update_spatial_is_locked(self, context):
                 tool.Geometry.lock_object(obj)
             else:
                 tool.Geometry.unlock_object(obj)
+    # Need to update ViewportData.mode.
+    bonsai.bim.handler.refresh_ui_data()
 
 
 def update_spatial_is_visible(self: "BIMSpatialDecompositionProperties", context: bpy.types.Context) -> None: