diff --git a/editor.planx.uk/src/@planx/components/List/schemas/ResidentialUnits/Proposed.ts b/editor.planx.uk/src/@planx/components/List/schemas/ResidentialUnits/Proposed.ts
index 9e713d03d4..77b533791d 100644
--- a/editor.planx.uk/src/@planx/components/List/schemas/ResidentialUnits/Proposed.ts
+++ b/editor.planx.uk/src/@planx/components/List/schemas/ResidentialUnits/Proposed.ts
@@ -3,6 +3,18 @@ import { Schema } from "../../model";
 export const ResidentialUnitsProposed: Schema = {
   type: "Proposed residential unit",
   fields: [
+    {
+      type: "question",
+      data: {
+        title: "What development does this unit result from?",
+        fn: "development",
+        options: [
+          { id: "newBuild", data: { text: "New build", val: "newBuild" } },
+          { id: "changeOfUseFrom", data: { text: "Change of use of existing single home", val: "changeOfUseFrom" } },
+          { id: "changeOfUseTo", data: { text: "Change of use to a home", val: "changeOfUseTo" } },
+        ],
+      },
+    },
     {
       type: "question",
       data: {