diff --git a/src/blenderbim/blenderbim/bim/module/model/__init__.py b/src/blenderbim/blenderbim/bim/module/model/__init__.py
index d23386d63f..802d4b7a20 100644
--- a/src/blenderbim/blenderbim/bim/module/model/__init__.py
+++ b/src/blenderbim/blenderbim/bim/module/model/__init__.py
@@ -9,6 +9,7 @@ classes = (
     wall.AlignWall,
     wall.FlipWall,
     wall.SplitWall,
+    wall.AddWallOpening,
     prop.BIMModelProperties,
     ui.BIM_PT_authoring,
     ui.BIM_PT_authoring_architectural,
diff --git a/src/blenderbim/blenderbim/bim/module/model/wall.py b/src/blenderbim/blenderbim/bim/module/model/wall.py
index 25ec66c86b..92ad70346b 100644
--- a/src/blenderbim/blenderbim/bim/module/model/wall.py
+++ b/src/blenderbim/blenderbim/bim/module/model/wall.py
@@ -36,6 +36,41 @@ def mode_callback(obj, data):
         IfcStore.edited_objs.add(obj)
 
 
+class AddWallOpening(bpy.types.Operator):
+    bl_idname = "bim.add_wall_opening"
+    bl_label = "Add Wall Opening"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        selected_objs = context.selected_objects
+        if len(selected_objs) == 0 or not context.active_object:
+            return {"FINISHED"}
+        wall_obj = context.active_object
+        if not wall_obj.BIMObjectProperties.ifc_definition_id:
+            return {"FINISHED"}
+        wall = IfcStore.get_file().by_id(wall_obj.BIMObjectProperties.ifc_definition_id)
+        if not wall.is_a("IfcWall"):
+            return {"FINISHED"}
+        local_location = wall_obj.matrix_world.inverted() @ context.scene.cursor.location
+        raycast = wall_obj.closest_point_on_mesh(local_location, distance=0.01)
+        if not raycast[0]:
+            return {"FINISHED"}
+        bpy.ops.mesh.primitive_cube_add(size=wall_obj.dimensions[1] * 2)
+        opening = bpy.context.selected_objects[0]
+
+        # Place the opening in the middle of the wall
+        global_location = wall_obj.matrix_world @ raycast[1]
+        normal = raycast[2]
+        normal.negate()
+        global_normal = wall_obj.matrix_world.to_quaternion() @ normal
+        opening.location = global_location + (global_normal * (wall_obj.dimensions[1] / 2))
+
+        opening.rotation_euler = wall_obj.rotation_euler
+        opening.name = "Opening"
+        bpy.ops.bim.add_opening(opening=opening.name, obj=wall_obj.name)
+        return {"FINISHED"}
+
+
 class JoinWall(bpy.types.Operator):
     bl_idname = "bim.join_wall"
     bl_label = "Join Wall"
diff --git a/src/blenderbim/blenderbim/bim/module/model/workspace.py b/src/blenderbim/blenderbim/bim/module/model/workspace.py
index f14eaf5c35..edc51476ec 100644
--- a/src/blenderbim/blenderbim/bim/module/model/workspace.py
+++ b/src/blenderbim/blenderbim/bim/module/model/workspace.py
@@ -26,6 +26,7 @@ class BimTool(WorkSpaceTool):
         ("bim.hotkey", {"type": "X", "value": "PRESS", "shift": True}, {"properties": [("hotkey", "X")]}),
         ("bim.hotkey", {"type": "C", "value": "PRESS", "shift": True}, {"properties": [("hotkey", "C")]}),
         ("bim.hotkey", {"type": "V", "value": "PRESS", "shift": True}, {"properties": [("hotkey", "V")]}),
+        ("bim.hotkey", {"type": "O", "value": "PRESS", "shift": True}, {"properties": [("hotkey", "O")]}),
     )
 
     def draw_settings(context, layout, tool):
@@ -45,6 +46,10 @@ class BimTool(WorkSpaceTool):
             row.label(text="Mitre", icon="EVENT_Y")
             row.label(text="Flip", icon="EVENT_F")
             row.label(text="Split", icon="EVENT_S")
+            row.label(text="Opening", icon="EVENT_O")
+
+        if props.ifc_class == "IfcSlabType":
+            row.label(text="Opening", icon="EVENT_O")
 
         row.label(text="", icon="EVENT_X")
         row.label(text="", icon="EVENT_C")
@@ -87,3 +92,9 @@ class Hotkey(bpy.types.Operator):
             bpy.ops.bim.align_wall(align_type="EXTERIOR")
         else:
             bpy.ops.bim.align_product(align_type="NEGATIVE")
+
+    def hotkey_O(self):
+        if self.props.ifc_class == "IfcWallType":
+            bpy.ops.bim.add_wall_opening()
+        elif self.props.ifc_class == "IfcSlabType":
+            pass