diff --git a/app/src/frontend/building/data-containers/team.tsx b/app/src/frontend/building/data-containers/team.tsx
index 9c5708f8..035ddd0c 100644
--- a/app/src/frontend/building/data-containers/team.tsx
+++ b/app/src/frontend/building/data-containers/team.tsx
@@ -26,6 +26,17 @@ const TeamView: React.FunctionComponent<CategoryViewProps> = (props) => (
             }
             <li>Awards</li>
         </ul>
+    <SelectDataEntry
+        title={dataFields.is_extension.title}
+        slug="is_extension"
+        value={props.building.is_extension}
+        mode={props.mode}
+        copy={props.copy}
+        onChange={props.onChange}
+        tooltip={dataFields.is_extension.tooltip}
+        placeholder={dataFields.is_extension.example}
+        options={dataFields.is_extension.items}
+        />
     </Fragment>
 );
 const TeamContainer = withCopyEdit(TeamView);
diff --git a/app/src/frontend/config/data-fields-config.ts b/app/src/frontend/config/data-fields-config.ts
index 95a46238..a1c93c58 100644
--- a/app/src/frontend/config/data-fields-config.ts
+++ b/app/src/frontend/config/data-fields-config.ts
@@ -636,6 +636,16 @@ export const dataFields = { /* eslint-disable @typescript-eslint/camelcase */
                 year_demolished: { min: 1993, max: 1994 },
                 lifespan: "2-5", overlap_present: "50%", links: ["", ""]}
         ]
+    },
+    is_extension: {
+        category: Category.Team,
+        title: "Do you wish to add information on:",
+        tooltip: "",
+        example: "The main building",
+        items: [
+            "The main building",
+            "A major extension"
+        ],
     }
 };