diff --git a/src/blenderbim/blenderbim/bim/__init__.py b/src/blenderbim/blenderbim/bim/__init__.py
index b7d1db49ac..65618371a3 100644
--- a/src/blenderbim/blenderbim/bim/__init__.py
+++ b/src/blenderbim/blenderbim/bim/__init__.py
@@ -24,8 +24,9 @@ if bpy is not None:
         "aggregate": None,
         "geometry": None,
         "cobie": None,
-        "sequence": None,
+        "resource": None,
         "cost": None,
+        "sequence": None,
         "group": None,
         "structural": None,
         "material": None,
diff --git a/src/blenderbim/blenderbim/bim/module/resource/__init__.py b/src/blenderbim/blenderbim/bim/module/resource/__init__.py
new file mode 100644
index 0000000000..86dee57ace
--- /dev/null
+++ b/src/blenderbim/blenderbim/bim/module/resource/__init__.py
@@ -0,0 +1,24 @@
+import bpy
+from . import ui, prop, operator
+
+classes = (
+    operator.DisableResourceEditingUI,
+    operator.DisableEditingResource,
+    operator.EnableEditingResource,
+    operator.LoadResources,
+    operator.AddCrewResource,
+    operator.AddSubcontractResource,
+    operator.EditResource,
+    operator.RemoveResource,
+    prop.Resource,
+    prop.BIMResourceProperties,
+    ui.BIM_PT_resources,
+    ui.BIM_UL_resources,
+)
+
+
+def register():
+    bpy.types.Scene.BIMResourceProperties = bpy.props.PointerProperty(type=prop.BIMResourceProperties)
+
+def unregister():
+    del bpy.types.Scene.BIMResourceProperties
diff --git a/src/blenderbim/blenderbim/bim/module/resource/operator.py b/src/blenderbim/blenderbim/bim/module/resource/operator.py
new file mode 100644
index 0000000000..72fc3971b6
--- /dev/null
+++ b/src/blenderbim/blenderbim/bim/module/resource/operator.py
@@ -0,0 +1,128 @@
+import bpy
+import json
+import ifcopenshell.api
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.resource.data import Data
+
+
+class LoadResources(bpy.types.Operator):
+    bl_idname = "bim.load_resources"
+    bl_label = "Load Work Plans"
+
+    def execute(self, context):
+        props = context.scene.BIMResourceProperties
+        while len(props.resources) > 0:
+            props.resources.remove(0)
+        for ifc_definition_id, resource in Data.resources.items():
+            new = props.resources.add()
+            new.ifc_definition_id = ifc_definition_id
+            new.name = resource["Name"] or "Unnamed"
+        props.is_editing = True
+        bpy.ops.bim.disable_editing_resource()
+        return {"FINISHED"}
+
+class EnableEditingResource(bpy.types.Operator):
+    bl_idname = "bim.enable_editing_resource"
+    bl_label = "Enable Editing Resource"
+    resource: bpy.props.IntProperty()
+
+    def execute(self, context):
+        props = context.scene.BIMResourceProperties
+        while len(props.resource_attributes) > 0:
+            props.resource_attributes.remove(0)
+
+        data = Data.resources[self.resource]
+        for attribute in IfcStore.get_schema().declaration_by_name("IfcConstructionResource").all_attributes():
+            data_type = ifcopenshell.util.attribute.get_primitive_type(attribute)
+            if data_type == "entity":
+                continue
+            new = props.resource_attributes.add()
+            new.name = attribute.name()
+            new.is_null = data[attribute.name()] is None
+            new.is_optional = attribute.optional()
+            new.data_type = data_type
+            if data_type == "string":
+                new.string_value = "" if new.is_null else data[attribute.name()]
+            elif data_type == "enum":
+                new.enum_items = json.dumps(ifcopenshell.util.attribute.get_enum_items(attribute))
+                if data[attribute.name()]:
+                    new.enum_value = data[attribute.name()]
+        props.active_resource_id = self.resource
+        return {"FINISHED"}
+
+class DisableEditingResource(bpy.types.Operator):
+    bl_idname = "bim.disable_editing_resource"
+    bl_label = "Disable Editing Workplan"
+
+    def execute(self, context):
+        context.scene.BIMWorkPlanProperties.active_resource_id = 0
+        return {"FINISHED"}
+
+class DisableResourceEditingUI(bpy.types.Operator):
+    bl_idname = "bim.disable_resource_editing_ui"
+    bl_label = "Disable Resources Editing UI"
+
+    def execute(self, context):
+        context.scene.BIMResourceProperties.is_editing = False
+        return {"FINISHED"}
+
+
+class AddSubcontractResource(bpy.types.Operator):
+    bl_idname = "bim.add_subcontract_resource"
+    bl_label = "Add Subcontract Resource"
+
+    def execute(self, context):
+        ifcopenshell.api.run("resource.add_subcontract_resource", IfcStore.get_file())
+        Data.load(IfcStore.get_file())
+        return {"FINISHED"}
+
+
+class AddCrewResource(bpy.types.Operator):
+    bl_idname = "bim.add_crew_resource"
+    bl_label = "Add Crew Resource"
+
+    def execute(self, context):
+        ifcopenshell.api.run("resource.add_crew_resource", IfcStore.get_file())
+        Data.load(IfcStore.get_file())
+        return {"FINISHED"}
+
+
+class EditResource(bpy.types.Operator):
+    bl_idname = "bim.edit_resource"
+    bl_label = "Edit Resource"
+
+    def execute(self, context):
+        props = context.scene.BIMResourceProperties
+        attributes = {}
+        for attribute in props.cost_resource_attributes:
+            if attribute.is_null:
+                attributes[attribute.name] = None
+            else:
+                if attribute.data_type == "string":
+                    attributes[attribute.name] = attribute.string_value
+                elif attribute.data_type == "enum":
+                    attributes[attribute.name] = attribute.enum_value
+        self.file = IfcStore.get_file()
+        ifcopenshell.api.run(
+            "resource.edit_resource",
+            self.file,
+            **{"resource": self.file.by_id(props.active_resource_id), "attributes": attributes},
+        )
+        Data.load(IfcStore.get_file())
+        bpy.ops.bim.disable_editing_resource()
+        return {"FINISHED"}
+
+
+class RemoveResource(bpy.types.Operator):
+    bl_idname = "bim.remove_resource"
+    bl_label = "Remove Resource"
+    resource: bpy.props.IntProperty()
+
+    def execute(self, context):
+        ifcopenshell.api.run(
+            "resource.remove_resource",
+            IfcStore.get_file(),
+            resource=IfcStore.get_file().by_id(self.resource),
+        )
+        Data.load(IfcStore.get_file())
+        return {"FINISHED"}
diff --git a/src/blenderbim/blenderbim/bim/module/resource/prop.py b/src/blenderbim/blenderbim/bim/module/resource/prop.py
new file mode 100644
index 0000000000..2f94fe2939
--- /dev/null
+++ b/src/blenderbim/blenderbim/bim/module/resource/prop.py
@@ -0,0 +1,37 @@
+import bpy
+import ifcopenshell.api
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.resource.data import Data
+from blenderbim.bim.prop import StrProperty, Attribute
+from bpy.types import PropertyGroup
+from bpy.props import (
+    PointerProperty,
+    StringProperty,
+    EnumProperty,
+    BoolProperty,
+    IntProperty,
+    FloatProperty,
+    FloatVectorProperty,
+    CollectionProperty,
+)
+
+
+class Resource(PropertyGroup):
+    name: StringProperty(name="Name")
+    ifc_definition_id: IntProperty(name="IFC Definition ID")
+    has_children: BoolProperty(name="Has Children")
+    is_expanded: BoolProperty(name="Is Expanded")
+    level_index: IntProperty(name="Level Index")
+
+
+class BIMResourceProperties(PropertyGroup):
+    resource_attributes: CollectionProperty(name="Resource Attributes", type=Attribute)
+    is_editing: BoolProperty(name="Is Editing")
+    is_a:StringProperty(name="Contracted Cost Items", default="[]")
+    active_resource_id: IntProperty(name="Active Resource Id")
+    active_resource_index: IntProperty(name="Active Resource Id")
+    resources: CollectionProperty(name="Resource", type=Resource)
+    active_nested_resource_id: IntProperty(name="Active Nested Ressource Id")
+    active_nested_resource_index: IntProperty(name="Active Nested Resource Index")
+    nested_resource_attributes: CollectionProperty(name="Nested Resource Attributes", type=Attribute)
+    contracted_nested_resources: StringProperty(name="Contracted Cost Items", default="[]")
diff --git a/src/blenderbim/blenderbim/bim/module/resource/ui.py b/src/blenderbim/blenderbim/bim/module/resource/ui.py
new file mode 100644
index 0000000000..81aa6d445a
--- /dev/null
+++ b/src/blenderbim/blenderbim/bim/module/resource/ui.py
@@ -0,0 +1,73 @@
+from bpy.types import Panel, UIList
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.resource.data import Data
+
+class BIM_PT_resources(Panel):
+    bl_label = "IFC Resources"
+    bl_idname = "BIM_PT_resources"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+
+    @classmethod
+    def poll(cls, context):
+        return IfcStore.get_file()
+
+    def draw(self, context):
+        if not Data.is_loaded:
+            Data.load(IfcStore.get_file())
+        self.props = context.scene.BIMResourceProperties
+
+        row = self.layout.row(align=True)
+        if self.props.is_editing:
+            row.operator("bim.add_subcontract_resource",emboss=False, text="", icon="FILE_TICK")
+            row.operator("bim.add_crew_resource",emboss=False, text="", icon="COMMUNITY")
+            row.operator("bim.disable_resource_editing_ui", text="", icon="CANCEL")
+        else:
+            row.operator("bim.load_resources", text="", icon="GREASEPENCIL")
+
+        if self.props.is_editing:
+            self.layout.template_list(
+                "BIM_UL_resources",
+                "",
+                self.props,
+                "resources",
+                self.props,
+                "active_resource_index",
+            )
+
+        if self.props.active_resource_id:
+            self.draw_editable_ui(context)
+
+    def draw_editable_ui(self, context):
+        for attribute in self.props.resource_attributes:
+            row = self.layout.row(align=True)
+            if attribute.data_type == "string":
+                row.prop(attribute, "string_value", text=attribute.name)
+            elif attribute.data_type == "boolean":
+                row.prop(attribute, "bool_value", text=attribute.name)
+            elif attribute.data_type == "integer":
+                row.prop(attribute, "int_value", text=attribute.name)
+            elif attribute.data_type == "float":
+                row.prop(attribute, "float_value", text=attribute.name)
+            elif attribute.data_type == "enum":
+                row.prop(attribute, "enum_value", text=attribute.name)
+            if attribute.is_optional:
+                row.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
+
+
+class BIM_UL_resources(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if item:
+            row = layout.row(align=True)
+            row.label(text=item.name)
+            if context.scene.BIMResourceProperties.active_resource_id == item.ifc_definition_id:
+                row.operator("bim.edit_resource", text="", icon="CHECKMARK")
+                row.operator("bim.disable_editing_resource", text="", icon="X")
+            elif context.scene.BIMResourceProperties.active_resource_id:
+                row.operator("bim.remove_resource", text="", icon="X").resource = item.ifc_definition_id
+            else:
+                op = row.operator("bim.enable_editing_resource", text="", icon="GREASEPENCIL")
+                op.resource = item.ifc_definition_id
+                row.operator("bim.remove_resource", text="", icon="X").resource = item.ifc_definition_id
diff --git a/src/ifcopenshell-python/ifcopenshell/api/resource/add_crew_resource.py b/src/ifcopenshell-python/ifcopenshell/api/resource/add_crew_resource.py
new file mode 100644
index 0000000000..1937dfe26a
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/resource/add_crew_resource.py
@@ -0,0 +1,30 @@
+import ifcopenshell.api
+import ifcopenshell.util.date
+from datetime import datetime
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "name": "Unnamed",
+            "predefined_type": "NOTDEFINED",
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        crew_resource = ifcopenshell.api.run(
+            "root.create_entity",
+            self.file,
+            ifc_class="IfcCrewResource",
+            predefined_type=self.settings["predefined_type"],
+            name=self.settings["name"],
+        )
+        # TODO: this is an ambiguity by buildingSMART: Can we nest and IfcCrewResource under an ifcCrewResource ?
+        # See https://forums.buildingsmart.org/t/is-the-ifcCrewResource-project-declaration-mutually-exclusive-to-aggregation-within-a-relating-ifcworkplan/3510
+        context = self.file.by_type("IfcContext")[0]
+        ifcopenshell.api.run(
+            "project.assign_declaration", self.file, definition=crew_resource, relating_context=context
+        )
+        return crew_resource
diff --git a/src/ifcopenshell-python/ifcopenshell/api/resource/add_subcontract_resource.py b/src/ifcopenshell-python/ifcopenshell/api/resource/add_subcontract_resource.py
new file mode 100644
index 0000000000..87516a4219
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/resource/add_subcontract_resource.py
@@ -0,0 +1,30 @@
+import ifcopenshell.api
+import ifcopenshell.util.date
+from datetime import datetime
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "name": "Unnamed",
+            "predefined_type": "NOTDEFINED",
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        subcontract_resource = ifcopenshell.api.run(
+            "root.create_entity",
+            self.file,
+            ifc_class="IfcSubContractResource",
+            predefined_type=self.settings["predefined_type"],
+            name=self.settings["name"],
+        )
+        # TODO: this is an ambiguity by buildingSMART: Can we nest and IfcCrewResource under an ifcCrewResource ?
+        # See https://forums.buildingsmart.org/t/is-the-ifcCrewResource-project-declaration-mutually-exclusive-to-aggregation-within-a-relating-ifcworkplan/3510
+        context = self.file.by_type("IfcContext")[0]
+        ifcopenshell.api.run(
+            "project.assign_declaration", self.file, definition=subcontract_resource, relating_context=context
+        )
+        return subcontract_resource
diff --git a/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py b/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py
new file mode 100644
index 0000000000..f8eef97224
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py
@@ -0,0 +1,43 @@
+import ifcopenshell
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "relating_resource": None,
+            "related_object": None,
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        if self.settings["related_object"].HasAssignments:
+            for assignment in self.settings["related_object"].HasAssignments:
+                if (
+                    assignment.is_a("IfclRelAssignsToResource")
+                    and assignment.RelatingResource == self.settings["relating_resource"]
+                ):
+                    return
+
+        referenced_by = None
+        if self.settings["relating_resource"].ResourceOf:
+            referenced_by = self.settings["relating_resource"].ResourceOf[0]
+
+        if referenced_by:
+            related_objects = list(referenced_by.RelatedObjects)
+            related_objects.append(self.settings["related_object"])
+            referenced_by.RelatedObjects = related_objects
+            ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": referenced_by})
+        else:
+            referenced_by = self.file.create_entity(
+                "IfcRelAssignsToResource",
+                **{
+                    "GlobalId": ifcopenshell.guid.new(),
+                    "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
+                    "RelatedObjects": [self.settings["related_object"]],
+                    "RelatingProduct": self.settings["relating_resource"],
+                }
+            )
+        return referenced_by
diff --git a/src/ifcopenshell-python/ifcopenshell/api/resource/data.py b/src/ifcopenshell-python/ifcopenshell/api/resource/data.py
new file mode 100644
index 0000000000..5fdc7c5a68
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/resource/data.py
@@ -0,0 +1,23 @@
+import ifcopenshell.api
+
+
+class Data:
+    is_loaded = False
+    resources = {}
+
+    @classmethod
+    def purge(cls):
+        cls.resources = {}
+
+    @classmethod
+    def load(cls, file):
+        cls.resources = {}
+        for resource in file.by_type("IfcResource"):
+            data = resource.get_info()
+            del data["OwnerHistory"]
+            data["RelatedObjects"] = []
+            for rel in resource.IsNestedBy:
+                [data["RelatedObjects"].append(o.id()) for o in rel.RelatedObjects if o.is_a("IfcCrewResource") or o.is_a("IfcsubcontractResource")]
+            cls.resources[resource.id()] = data
+
+        cls.is_loaded=True
diff --git a/src/ifcopenshell-python/ifcopenshell/api/resource/remove_resource.py b/src/ifcopenshell-python/ifcopenshell/api/resource/remove_resource.py
new file mode 100644
index 0000000000..50fa0376ce
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/resource/remove_resource.py
@@ -0,0 +1,10 @@
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"resource": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        # TODO: do a deep purge
+        self.file.remove(self.settings["resource"])