diff --git a/app/views/form/_textarea_question.html.erb b/app/views/form/_textarea_question.html.erb
new file mode 100644
index 000000000..b9644496e
--- /dev/null
+++ b/app/views/form/_textarea_question.html.erb
@@ -0,0 +1,7 @@
+<%= f.govuk_text_area question.id.to_sym,
+    caption: caption && !page_header.present? ? { text: caption.html_safe, size: "l" } : nil,
+    label: { text: question.header.html_safe, size: !page_header.present? ? "l" : "m", tag: !page_header.present? ? "h1" : "h2" },
+    hint: { text: question.hint_text },
+    width: question.width ? question.width : nil,
+    **stimulus_html_attributes(question)
+%>
diff --git a/config/forms/2021_2022.json b/config/forms/2021_2022.json
index 5d24ddc84..a9b458c2e 100644
--- a/config/forms/2021_2022.json
+++ b/config/forms/2021_2022.json
@@ -1483,7 +1483,7 @@
                   "check_answer_label": "Reason for not knowing local authority",
                   "header": "Give a reason why you don’t know the postcode or local authority",
                   "hint_text": "",
-                  "type": "text"
+                  "type": "textarea"
                 }
               },
               "depends_on": { "la_known": "No" }
diff --git a/spec/fixtures/forms/test_form.json b/spec/fixtures/forms/test_form.json
index 95add8988..71d002e13 100644
--- a/spec/fixtures/forms/test_form.json
+++ b/spec/fixtures/forms/test_form.json
@@ -532,6 +532,18 @@
                   }
                 }
               },
+              "why_dont_you_know_la": {
+                "header": "",
+                "description": "",
+                "questions": {
+                  "why_dont_you_know_la": {
+                    "check_answer_label": "Reason for not knowing local authority",
+                    "header": "Give a reason why you don’t know the postcode or local authority",
+                    "hint_text": "",
+                    "type": "textarea"
+                  }
+                }
+              },
               "property_postcode": {
                 "questions": {
                   "property_postcode": {
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index 89cb98542..e87765aac 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -15,7 +15,7 @@ RSpec.describe FormHandler do
       form_handler = FormHandler.instance
       form = form_handler.get_form("test_form")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(24)
+      expect(form.pages.count).to eq(25)
     end
   end