diff --git a/helm-charts/basehub/values.schema.yaml b/helm-charts/basehub/values.schema.yaml
index 488e7b3546..f62c04fa06 100644
--- a/helm-charts/basehub/values.schema.yaml
+++ b/helm-charts/basehub/values.schema.yaml
@@ -210,6 +210,14 @@ properties:
   binderhub-service:
     type: object
     additionalProperties: true
+    required:
+      - enabled
+    properties:
+      enabled:
+        type: boolean
+        # https://github.com/2i2c-org/binderhub-service
+        description: |
+          Enable image building with binderhub-service
   # jupyterhub is a dependent helm chart and we rely _mostly_ on its schema
   # validation for values passed to it and are not imposing restrictions on
   # most of them in this helm chart.
diff --git a/helm-charts/basehub/values.yaml b/helm-charts/basehub/values.yaml
index e76d6a0c90..3916d94bd7 100644
--- a/helm-charts/basehub/values.yaml
+++ b/helm-charts/basehub/values.yaml
@@ -5,6 +5,9 @@ userServiceAccount:
   enabled: true
   annotations: {}
 
+binderhub-service:
+  enabled: false
+
 ingressBasicAuth:
   enabled: false
   # Primarily here for validation to 'work',