diff --git a/app/models/form/lettings/questions/uprn_known.rb b/app/models/form/lettings/questions/uprn_known.rb
index 816a31ffb..95c53ec6a 100644
--- a/app/models/form/lettings/questions/uprn_known.rb
+++ b/app/models/form/lettings/questions/uprn_known.rb
@@ -9,7 +9,18 @@ class Form::Lettings::Questions::UprnKnown < ::Form::Question
     @hint_text = "The Unique Property Reference Number (UPRN) is a unique number system created by Ordnance Survey and used by housing providers and sectors UK-wide. For example 10010457355.<br><br>
     You can continue without the UPRN, but it means we will need you to enter the address of the property."
     @conditional_for = { "uprn" => [1] }
-    @hidden_in_check_answers = true
+    @inferred_check_answers_value = [
+      {
+        "condition" => { "uprn_known" => 0 },
+        "value" => "Not known",
+      },
+    ]
+    @hidden_in_check_answers = {
+      "depends_on" => [
+        { "uprn_known" => 0 },
+        { "uprn_known" => 1 },
+      ],
+    }
   end
 
   ANSWER_OPTIONS = {
diff --git a/app/models/form/sales/questions/uprn_known.rb b/app/models/form/sales/questions/uprn_known.rb
index 22438e662..09f3c54c9 100644
--- a/app/models/form/sales/questions/uprn_known.rb
+++ b/app/models/form/sales/questions/uprn_known.rb
@@ -15,7 +15,12 @@ class Form::Sales::Questions::UprnKnown < ::Form::Question
         "value" => "Not known",
       },
     ]
-    @hidden_in_check_answers = true
+    @hidden_in_check_answers = {
+      "depends_on" => [
+        { "uprn_known" => 0 },
+        { "uprn_known" => 1 },
+      ],
+    }
   end
 
   ANSWER_OPTIONS = {
diff --git a/spec/models/form/lettings/questions/uprn_known_spec.rb b/spec/models/form/lettings/questions/uprn_known_spec.rb
index a79185462..b13e87798 100644
--- a/spec/models/form/lettings/questions/uprn_known_spec.rb
+++ b/spec/models/form/lettings/questions/uprn_known_spec.rb
@@ -54,6 +54,20 @@ RSpec.describe Form::Lettings::Questions::UprnKnown, type: :model do
   end
 
   it "has the correct hidden_in_check_answers" do
-    expect(question.hidden_in_check_answers).to eq(true)
+    expect(question.hidden_in_check_answers).to eq({
+      "depends_on" => [
+        { "uprn_known" => 0 },
+        { "uprn_known" => 1 },
+      ],
+    })
+  end
+
+  it "has the correct inferred_check_answers_value" do
+    expect(question.hidden_in_check_answers).to eq([
+      {
+        "condition" => { "uprn_known" => 0 },
+        "value" => "Not known",
+      },
+    ])
   end
 end
diff --git a/spec/models/form/sales/questions/uprn_known_spec.rb b/spec/models/form/sales/questions/uprn_known_spec.rb
index 4016b6e8d..8f7006913 100644
--- a/spec/models/form/sales/questions/uprn_known_spec.rb
+++ b/spec/models/form/sales/questions/uprn_known_spec.rb
@@ -54,6 +54,20 @@ RSpec.describe Form::Sales::Questions::UprnKnown, type: :model do
   end
 
   it "has the correct hidden_in_check_answers" do
-    expect(question.hidden_in_check_answers).to eq(true)
+    expect(question.hidden_in_check_answers).to eq({
+      "depends_on" => [
+        { "uprn_known" => 0 },
+        { "uprn_known" => 1 },
+      ],
+    })
+  end
+
+  it "has the correct inferred_check_answers_value" do
+    expect(question.hidden_in_check_answers).to eq([
+      {
+        "condition" => { "uprn_known" => 0 },
+        "value" => "Not known",
+      },
+    ])
   end
 end