diff --git a/src/bonsai/bonsai/bim/module/model/wall.py b/src/bonsai/bonsai/bim/module/model/wall.py
index 83946d4c0d..bc54335c91 100644
--- a/src/bonsai/bonsai/bim/module/model/wall.py
+++ b/src/bonsai/bonsai/bim/module/model/wall.py
@@ -811,6 +811,7 @@ class ChangeExtrusionDepth(bpy.types.Operator, tool.Ifc.Operator):
 
         if layer2_objs:
             tool.Model.recalculate_walls(layer2_objs)
+            _resync_walls_after_mutation(layer2_objs)
         return {"FINISHED"}
 
 
@@ -926,6 +927,7 @@ class ChangeExtrusionXAngle(bpy.types.Operator, tool.Ifc.Operator):
 
         if layer2_objs:
             tool.Model.recalculate_walls(layer2_objs)
+            _resync_walls_after_mutation(layer2_objs)
         return {"FINISHED"}
 
 
@@ -948,6 +950,7 @@ class ChangeLayerLength(bpy.types.Operator, tool.Ifc.Operator):
         selected_objs = tool.Model.get_selected_mesh_ifc_objects()
         for obj in selected_objs:
             joiner.set_length(obj, self.length)
+        _resync_walls_after_mutation(selected_objs)
 
 
 class OffsetWalls(bpy.types.Operator, tool.Ifc.Operator):
diff --git a/src/bonsai/test/bim/module/model/test_wall_props_resync_on_dim_change.py b/src/bonsai/test/bim/module/model/test_wall_props_resync_on_dim_change.py
new file mode 100644
index 0000000000..f9f05fb936
--- /dev/null
+++ b/src/bonsai/test/bim/module/model/test_wall_props_resync_on_dim_change.py
@@ -0,0 +1,57 @@
+# Bonsai - OpenBIM Blender Add-on
+# Copyright (C) 2026
+#
+# This file is part of Bonsai.
+#
+# Bonsai is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Bonsai is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
+#
+# This file was generated with the assistance of an AI coding tool.
+
+"""Pins the contract that the three dimension-mutating wall operators —
+``bim.change_extrusion_depth``, ``bim.change_extrusion_x_angle``,
+``bim.change_layer_length`` — re-prime ``BIMWallProperties`` from the
+post-mutation IFC at the end of ``_execute``.
+
+Without the resync, ``props.height`` / ``props.length`` / ``props.x_angle``
+stay at their pre-mutation values; gizmo icons that position from
+``props.height`` then sit at the old elevation even though the wall mesh
+shows the new one."""
+
+import inspect
+
+import pytest
+
+pytestmark = pytest.mark.wall
+
+
+def _execute_source(operator_cls):
+    return inspect.getsource(operator_cls._execute)
+
+
+def test_change_extrusion_depth_resyncs_wall_props():
+    from bonsai.bim.module.model.wall import ChangeExtrusionDepth
+
+    assert "_resync_walls_after_mutation" in _execute_source(ChangeExtrusionDepth)
+
+
+def test_change_extrusion_x_angle_resyncs_wall_props():
+    from bonsai.bim.module.model.wall import ChangeExtrusionXAngle
+
+    assert "_resync_walls_after_mutation" in _execute_source(ChangeExtrusionXAngle)
+
+
+def test_change_layer_length_resyncs_wall_props():
+    from bonsai.bim.module.model.wall import ChangeLayerLength
+
+    assert "_resync_walls_after_mutation" in _execute_source(ChangeLayerLength)