diff --git a/incubator/hnc/api/v1alpha1/hierarchical_namespace.go b/incubator/hnc/api/v1alpha1/hierarchical_namespace.go
new file mode 100644
index 000000000..c6e125827
--- /dev/null
+++ b/incubator/hnc/api/v1alpha1/hierarchical_namespace.go
@@ -0,0 +1,67 @@
+/*
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// HNSStatus describes the status of a hierarchical namespace. The status could be
+// "missing", "ok" or "conflict". The definitions will be described below.
+type HNSStatus string
+
+const (
+	// Missing means the child namespace has not been created yet. This should be the default
+	// status when the HNS is just created.
+	Missing HNSStatus = "missing"
+
+	// Ok means the child namespace exists.
+	Ok HNSStatus = "ok"
+
+	// Conflict means a namespace of the same name already exists.
+	Conflict HNSStatus = "conflict"
+)
+
+// HierarchicalNamespaceStatus defines the observed state of HierarchicalNamespace.
+type HierarchicalNamespaceStatus struct {
+	// API version of the kind defined below. This is used to unambiguously identifies the kind.
+	Status HNSStatus `json:"status,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+// +kubebuilder:resource:path=hierarchicalnamespaces,scope=Namespaced
+
+// HierarchicalNamespace is the Schema for the self-service namespace API.
+// See details at http://bit.ly/hnc-self-serve-ux.
+type HierarchicalNamespace struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Status HierarchicalNamespaceStatus `json:"status,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+
+// HierarchicalNamespaceList contains a list of HierarchicalNamespace.
+type HierarchicalNamespaceList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []HierarchicalNamespace `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&HierarchicalNamespace{}, &HierarchicalNamespaceList{})
+}
diff --git a/incubator/hnc/api/v1alpha1/zz_generated.deepcopy.go b/incubator/hnc/api/v1alpha1/zz_generated.deepcopy.go
index 80273d8af..f759f5889 100644
--- a/incubator/hnc/api/v1alpha1/zz_generated.deepcopy.go
+++ b/incubator/hnc/api/v1alpha1/zz_generated.deepcopy.go
@@ -159,6 +159,79 @@ func (in *HNCConfigurationStatus) DeepCopy() *HNCConfigurationStatus {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *HierarchicalNamespace) DeepCopyInto(out *HierarchicalNamespace) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	out.Status = in.Status
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HierarchicalNamespace.
+func (in *HierarchicalNamespace) DeepCopy() *HierarchicalNamespace {
+	if in == nil {
+		return nil
+	}
+	out := new(HierarchicalNamespace)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *HierarchicalNamespace) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *HierarchicalNamespaceList) DeepCopyInto(out *HierarchicalNamespaceList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	out.ListMeta = in.ListMeta
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]HierarchicalNamespace, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HierarchicalNamespaceList.
+func (in *HierarchicalNamespaceList) DeepCopy() *HierarchicalNamespaceList {
+	if in == nil {
+		return nil
+	}
+	out := new(HierarchicalNamespaceList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *HierarchicalNamespaceList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *HierarchicalNamespaceStatus) DeepCopyInto(out *HierarchicalNamespaceStatus) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HierarchicalNamespaceStatus.
+func (in *HierarchicalNamespaceStatus) DeepCopy() *HierarchicalNamespaceStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(HierarchicalNamespaceStatus)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *HierarchyConfiguration) DeepCopyInto(out *HierarchyConfiguration) {
 	*out = *in
diff --git a/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchicalnamespaces.yaml b/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchicalnamespaces.yaml
new file mode 100644
index 000000000..90735ffe9
--- /dev/null
+++ b/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchicalnamespaces.yaml
@@ -0,0 +1,52 @@
+
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  creationTimestamp: null
+  name: hierarchicalnamespaces.hnc.x-k8s.io
+spec:
+  group: hnc.x-k8s.io
+  names:
+    kind: HierarchicalNamespace
+    listKind: HierarchicalNamespaceList
+    plural: hierarchicalnamespaces
+    singular: hierarchicalnamespace
+  scope: Namespaced
+  validation:
+    openAPIV3Schema:
+      description: HierarchicalNamespace is the Schema for the self-service namespace
+        API. See details at http://bit.ly/hnc-self-serve-ux.
+      properties:
+        apiVersion:
+          description: 'APIVersion defines the versioned schema of this representation
+            of an object. Servers should convert recognized schemas to the latest
+            internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#resources'
+          type: string
+        kind:
+          description: 'Kind is a string value representing the REST resource this
+            object represents. Servers may infer this from the endpoint the client
+            submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds'
+          type: string
+        metadata:
+          type: object
+        status:
+          description: HierarchicalNamespaceStatus defines the observed state of HierarchicalNamespace.
+          properties:
+            status:
+              description: API version of the kind defined below. This is used to
+                unambiguously identifies the kind.
+              type: string
+          type: object
+      type: object
+  version: v1alpha1
+  versions:
+  - name: v1alpha1
+    served: true
+    storage: true
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []
diff --git a/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchyconfigurations.yaml b/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchyconfigurations.yaml
index 7a3c6a8b3..d917363a5 100644
--- a/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchyconfigurations.yaml
+++ b/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hierarchyconfigurations.yaml
@@ -3,8 +3,6 @@
 apiVersion: apiextensions.k8s.io/v1beta1
 kind: CustomResourceDefinition
 metadata:
-  annotations:
-    controller-gen.kubebuilder.io/version: v0.2.4
   creationTimestamp: null
   name: hierarchyconfigurations.hnc.x-k8s.io
 spec:
@@ -14,7 +12,7 @@ spec:
     listKind: HierarchyConfigurationList
     plural: hierarchyconfigurations
     singular: hierarchyconfiguration
-  scope: Namespaced
+  scope: ""
   validation:
     openAPIV3Schema:
       description: Hierarchy is the Schema for the hierarchies API
diff --git a/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hncconfigurations.yaml b/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hncconfigurations.yaml
index 1d404f74c..025af0ec5 100644
--- a/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hncconfigurations.yaml
+++ b/incubator/hnc/config/crd/bases/hnc.x-k8s.io_hncconfigurations.yaml
@@ -3,8 +3,6 @@
 apiVersion: apiextensions.k8s.io/v1beta1
 kind: CustomResourceDefinition
 metadata:
-  annotations:
-    controller-gen.kubebuilder.io/version: v0.2.4
   creationTimestamp: null
   name: hncconfigurations.hnc.x-k8s.io
 spec: