diff --git a/src/blenderbim/generate_demo_library.py b/src/blenderbim/generate_demo_library.py
new file mode 100644
index 0000000000..3babcd4184
--- /dev/null
+++ b/src/blenderbim/generate_demo_library.py
@@ -0,0 +1,82 @@
+import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.element
+
+
+class LibraryGenerator:
+    def generate(self):
+        self.file = ifcopenshell.api.run("project.create_file")
+        self.project = ifcopenshell.api.run(
+            "root.create_entity", self.file, ifc_class="IfcProjectLibrary", name="BlenderBIM Demo Library"
+        )
+        ifcopenshell.api.run("unit.assign_unit", self.file, length={"is_metric": True, "raw": "METERS"})
+
+        self.material = ifcopenshell.api.run("material.add_material", self.file, name="Unknown")
+        self.create_wall_type("DEMO50", 0.05)
+        self.create_wall_type("DEMO100", 0.1)
+        self.create_wall_type("DEMO200", 0.2)
+        self.create_wall_type("DEMO300", 0.3)
+
+        profile = self.file.create_entity("IfcRectangleProfileDef", ProfileType="AREA", XDim=0.5, YDim=0.6)
+        self.create_profile_type("IfcColumnType", "DEMO1", profile)
+
+        profile = self.file.create_entity(
+            "IfcCircleHollowProfileDef", ProfileType="AREA", Radius=0.25, WallThickness=0.005
+        )
+        self.create_profile_type("IfcColumnType", "DEMO2", profile)
+
+        profile = self.file.create_entity(
+            "IfcRectangleHollowProfileDef",
+            ProfileType="AREA",
+            XDim=0.075,
+            YDim=0.15,
+            WallThickness=0.005,
+            InnerFilletRadius=0.005,
+            OuterFilletRadius=0.005,
+        )
+        self.create_profile_type("IfcColumnType", "DEMO3", profile)
+
+        profile = self.file.create_entity(
+            "IfcIShapeProfileDef",
+            ProfileType="AREA",
+            OverallWidth=0.1,
+            OverallDepth=0.2,
+            WebThickness=0.005,
+            FlangeThickness=0.01,
+            FilletRadius=0.005,
+        )
+        self.create_profile_type("IfcBeamType", "DEMO1", profile)
+
+        profile = self.file.create_entity(
+            "IfcCShapeProfileDef",
+            ProfileType="AREA",
+            Depth=0.2,
+            Width=0.1,
+            WallThickness=0.0015,
+            Girth=0.03,
+            InternalFilletRadius=0.005,
+        )
+        self.create_profile_type("IfcBeamType", "DEMO2", profile)
+
+        self.file.write("blenderbim-demo-library.ifc")
+
+    def create_wall_type(self, name, thickness):
+        wall = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWallType", name=name)
+        ifcopenshell.api.run("material.assign_material", self.file, product=wall, type="IfcMaterialLayerSet")
+        layer_set = ifcopenshell.util.element.get_material(wall)
+        layer = ifcopenshell.api.run("material.add_layer", self.file, layer_set=layer_set, material=self.material)
+        layer.LayerThickness = thickness
+        ifcopenshell.api.run("project.assign_declaration", self.file, definition=wall, relating_context=self.project)
+
+    def create_profile_type(self, ifc_class, name, profile):
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class=ifc_class, name=name)
+        ifcopenshell.api.run("material.assign_material", self.file, product=element, type="IfcMaterialProfileSet")
+        profile_set = ifcopenshell.util.element.get_material(element)
+        material_profile = ifcopenshell.api.run(
+            "material.add_profile", self.file, profile_set=profile_set, material=self.material
+        )
+        ifcopenshell.api.run("material.assign_profile", self.file, material_profile=material_profile, profile=profile)
+        ifcopenshell.api.run("project.assign_declaration", self.file, definition=element, relating_context=self.project)
+
+
+LibraryGenerator().generate()