diff --git a/app/frontend/controllers/conditional_question_controller.js b/app/frontend/controllers/conditional_question_controller.js
index 974deeb2e..fb52d07c1 100644
--- a/app/frontend/controllers/conditional_question_controller.js
+++ b/app/frontend/controllers/conditional_question_controller.js
@@ -8,14 +8,16 @@ export default class extends Controller {
   displayConditional () {
     if (this.element.checked) {
       const selectedValue = this.element.value
-      const conditionalFor = JSON.parse(this.element.dataset.info)
+      const dataInfo = JSON.parse(this.element.dataset.info)
+      const conditionalFor = dataInfo.conditional_questions
+      const logType = dataInfo.log_type
 
       Object.entries(conditionalFor).forEach(([targetQuestion, conditions]) => {
         if (!conditions.map(String).includes(String(selectedValue))) {
-          const textNumericInput = document.getElementById(`lettings-log-${targetQuestion.replaceAll('_', '-')}-field`)
+          const textNumericInput = document.getElementById(`${logType}-log-${targetQuestion.replaceAll('_', '-')}-field`)
           if (textNumericInput == null) {
             const dateInputs = [1, 2, 3].map((idx) => {
-              return document.getElementById(`lettings_log_${targetQuestion}_${idx}i`)
+              return document.getElementById(`${logType}_log_${targetQuestion}_${idx}i`)
             })
             this.clearDateInputs(dateInputs)
           } else {
diff --git a/app/helpers/question_attribute_helper.rb b/app/helpers/question_attribute_helper.rb
index f2f148568..857ce5eb1 100644
--- a/app/helpers/question_attribute_helper.rb
+++ b/app/helpers/question_attribute_helper.rb
@@ -27,7 +27,7 @@ private
     {
       "data-controller": "conditional-question",
       "data-action": "click->conditional-question#displayConditional",
-      "data-info": question.conditional_for.to_json,
+      "data-info": { conditional_questions: question.conditional_for, log_type: question.form.type }.to_json,
     }
   end
 end
diff --git a/app/models/form/sales/pages/nationality1.rb b/app/models/form/sales/pages/nationality1.rb
new file mode 100644
index 000000000..740aa694f
--- /dev/null
+++ b/app/models/form/sales/pages/nationality1.rb
@@ -0,0 +1,16 @@
+class Form::Sales::Pages::Nationality1 < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "buyer_1_nationality"
+    @header = ""
+    @description = ""
+    @subsection = subsection
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::Nationality1.new(nil, nil, self),
+      Form::Sales::Questions::OtherNationality1.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/nationality1.rb b/app/models/form/sales/questions/nationality1.rb
new file mode 100644
index 000000000..737bfc01e
--- /dev/null
+++ b/app/models/form/sales/questions/nationality1.rb
@@ -0,0 +1,30 @@
+class Form::Sales::Questions::Nationality1 < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "national"
+    @check_answer_label = "Buyer 1’s nationality"
+    @header = "What is buyer 1’s nationality?"
+    @type = "radio"
+    @hint_text = "Buyer 1 is the person in the household who does the most paid work. If it’s a joint purchase and the buyers do the same amount of paid work, buyer 1 is whoever is the oldest."
+    @page = page
+    @answer_options = ANSWER_OPTIONS
+    @conditional_for = {
+      "othernational" => [12],
+    }
+    @hidden_in_check_answers = {
+      "depends_on" => [
+        {
+          "national" => 12,
+        },
+      ],
+    }
+  end
+
+  ANSWER_OPTIONS = {
+    "18" => { "value" => "United Kingdom" },
+    "17" => { "value" => "Republic of Ireland" },
+    "19" => { "value" => "European Economic Area (EEA), excluding ROI" },
+    "12" => { "value" => "Other" },
+    "13" => { "value" => "Buyer prefers not to say" },
+  }.freeze
+end
diff --git a/app/models/form/sales/questions/other_nationality1.rb b/app/models/form/sales/questions/other_nationality1.rb
new file mode 100644
index 000000000..a779d4fc8
--- /dev/null
+++ b/app/models/form/sales/questions/other_nationality1.rb
@@ -0,0 +1,10 @@
+class Form::Sales::Questions::OtherNationality1 < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "othernational"
+    @check_answer_label = "Buyer 1’s nationality"
+    @header = "Nationality"
+    @type = "text"
+    @page = page
+  end
+end
diff --git a/app/models/form/sales/subsections/household_characteristics.rb b/app/models/form/sales/subsections/household_characteristics.rb
index 93d084332..e389d5e72 100644
--- a/app/models/form/sales/subsections/household_characteristics.rb
+++ b/app/models/form/sales/subsections/household_characteristics.rb
@@ -12,14 +12,15 @@ class Form::Sales::Subsections::HouseholdCharacteristics < ::Form::Subsection
       Form::Sales::Pages::BuyerInterview.new(nil, nil, self),
       Form::Sales::Pages::Age1.new(nil, nil, self),
       Form::Sales::Pages::GenderIdentity1.new(nil, nil, self),
-      Form::Sales::Pages::Buyer1LiveInProperty.new(nil, nil, self),
-      Form::Sales::Pages::Buyer2RelationshipToBuyer1.new(nil, nil, self),
       Form::Sales::Pages::Buyer1EthnicGroup.new(nil, nil, self),
       Form::Sales::Pages::Buyer1EthnicBackgroundBlack.new(nil, nil, self),
       Form::Sales::Pages::Buyer1EthnicBackgroundAsian.new(nil, nil, self),
       Form::Sales::Pages::Buyer1EthnicBackgroundArab.new(nil, nil, self),
       Form::Sales::Pages::Buyer1EthnicBackgroundMixed.new(nil, nil, self),
       Form::Sales::Pages::Buyer1EthnicBackgroundWhite.new(nil, nil, self),
+      Form::Sales::Pages::Nationality1.new(nil, nil, self),
+      Form::Sales::Pages::Buyer1LiveInProperty.new(nil, nil, self),
+      Form::Sales::Pages::Buyer2RelationshipToBuyer1.new(nil, nil, self),
       Form::Sales::Pages::Age2.new(nil, nil, self),
       Form::Sales::Pages::GenderIdentity2.new(nil, nil, self),
       Form::Sales::Pages::Buyer2WorkingSituation.new(nil, nil, self),
diff --git a/db/migrate/20220927082602_add_national_column.rb b/db/migrate/20220927082602_add_national_column.rb
new file mode 100644
index 000000000..d794bc858
--- /dev/null
+++ b/db/migrate/20220927082602_add_national_column.rb
@@ -0,0 +1,8 @@
+class AddNationalColumn < ActiveRecord::Migration[7.0]
+  def change
+    change_table :sales_logs, bulk: true do |t|
+      t.column :national, :integer
+      t.column :othernational, :string
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index b30200da0..269091a77 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2022_10_03_150610) do
+ActiveRecord::Schema[7.0].define(version: 2022_10_04_095132) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -329,22 +329,24 @@ ActiveRecord::Schema[7.0].define(version: 2022_10_03_150610) do
     t.string "purchid"
     t.integer "type"
     t.integer "ownershipsch"
-    t.string "othtype"
-    t.integer "jointmore"
     t.integer "jointpur"
+    t.string "othtype"
     t.integer "beds"
-    t.integer "companybuy"
+    t.integer "jointmore"
     t.integer "age1"
     t.integer "age1_known"
     t.string "sex1"
+    t.integer "national"
+    t.string "othernational"
     t.integer "buy1livein"
+    t.integer "companybuy"
     t.integer "buylivein"
     t.integer "builtype"
     t.integer "proptype"
-    t.string "relat2"
-    t.string "otherrelat2"
     t.integer "age2"
     t.integer "age2_known"
+    t.string "relat2"
+    t.string "otherrelat2"
     t.integer "ethnic"
     t.integer "ethnic_group"
     t.string "sex2"
diff --git a/spec/factories/sales_log.rb b/spec/factories/sales_log.rb
index 4f9aa07ed..2936d0d06 100644
--- a/spec/factories/sales_log.rb
+++ b/spec/factories/sales_log.rb
@@ -24,6 +24,7 @@ FactoryBot.define do
       age1_known { 0 }
       age1 { 30 }
       sex1 { "X" }
+      national { 18 }
       buy1livein { 1 }
       relat2 { "P" }
       proptype { 1 }
diff --git a/spec/features/form/conditional_questions_spec.rb b/spec/features/form/conditional_questions_spec.rb
index 4f3f44b5a..33d99955e 100644
--- a/spec/features/form/conditional_questions_spec.rb
+++ b/spec/features/form/conditional_questions_spec.rb
@@ -12,6 +12,14 @@ RSpec.describe "Form Conditional Questions" do
       managing_organisation: user.organisation,
     )
   end
+  let(:sales_log) do
+    FactoryBot.create(
+      :sales_log,
+      :completed,
+      owning_organisation: user.organisation,
+      managing_organisation: user.organisation,
+    )
+  end
   let(:id) { lettings_log.id }
   let(:fake_2021_2022_form) { Form.new("spec/fixtures/forms/2021_2022.json") }
 
@@ -44,5 +52,15 @@ RSpec.describe "Form Conditional Questions" do
       visit("/lettings-logs/#{id}/property-postcode")
       expect(page).to have_field("lettings-log-postcode-full-field", with: "NW1 6RT")
     end
+
+    it "gets cleared if the conditional question is hidden after editing the answer" do
+      sales_log.update!(national: 12, othernational: "other")
+      visit("/sales-logs/#{sales_log.id}/buyer-1-nationality")
+      expect(page).to have_field("sales-log-othernational-field", with: "other")
+
+      choose("sales-log-national-18-field", allow_label_click: true)
+      choose("sales-log-national-12-field", allow_label_click: true)
+      expect(page).to have_field("sales-log-othernational-field", with: "")
+    end
   end
 end
diff --git a/spec/helpers/question_attribute_helper_spec.rb b/spec/helpers/question_attribute_helper_spec.rb
index 96f2f7ef6..2be903535 100644
--- a/spec/helpers/question_attribute_helper_spec.rb
+++ b/spec/helpers/question_attribute_helper_spec.rb
@@ -40,7 +40,7 @@ RSpec.describe QuestionAttributeHelper do
           "conditional_for" => {
             "next_question": ">1",
           },
-        }, nil)
+        }, form.get_page("rent"))
       end
       let(:expected_attribs) do
         {
@@ -48,7 +48,7 @@ RSpec.describe QuestionAttributeHelper do
           "data-action": "input->numeric-question#calculateFields click->conditional-question#displayConditional",
           "data-target": "lettings-log-#{question.result_field.to_s.dasherize}-field",
           "data-calculated": question.fields_to_add.to_json,
-          "data-info": question.conditional_for.to_json,
+          "data-info": { conditional_questions: question.conditional_for, log_type: "lettings" }.to_json,
         }
       end
 
diff --git a/spec/models/form/sales/pages/nationality1_spec.rb b/spec/models/form/sales/pages/nationality1_spec.rb
new file mode 100644
index 000000000..5d156e041
--- /dev/null
+++ b/spec/models/form/sales/pages/nationality1_spec.rb
@@ -0,0 +1,33 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::Nationality1, type: :model do
+  subject(:page) { described_class.new(page_id, page_definition, subsection) }
+
+  let(:page_id) { nil }
+  let(:page_definition) { nil }
+  let(:subsection) { instance_double(Form::Subsection) }
+
+  it "has correct subsection" do
+    expect(page.subsection).to eq(subsection)
+  end
+
+  it "has correct questions" do
+    expect(page.questions.map(&:id)).to eq(%w[national othernational])
+  end
+
+  it "has the correct id" do
+    expect(page.id).to eq("buyer_1_nationality")
+  end
+
+  it "has the correct header" do
+    expect(page.header).to eq("")
+  end
+
+  it "has the correct description" do
+    expect(page.description).to eq("")
+  end
+
+  it "has correct depends_on" do
+    expect(page.depends_on).to be_nil
+  end
+end
diff --git a/spec/models/form/sales/questions/nationality1_spec.rb b/spec/models/form/sales/questions/nationality1_spec.rb
new file mode 100644
index 000000000..819d41ae4
--- /dev/null
+++ b/spec/models/form/sales/questions/nationality1_spec.rb
@@ -0,0 +1,63 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::Nationality1, type: :model do
+  subject(:question) { described_class.new(question_id, question_definition, page) }
+
+  let(:question_id) { nil }
+  let(:question_definition) { nil }
+  let(:page) { instance_double(Form::Page) }
+
+  it "has correct page" do
+    expect(question.page).to eq(page)
+  end
+
+  it "has the correct id" do
+    expect(question.id).to eq("national")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("What is buyer 1’s nationality?")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Buyer 1’s nationality")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("radio")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to eq("Buyer 1 is the person in the household who does the most paid work. If it’s a joint purchase and the buyers do the same amount of paid work, buyer 1 is whoever is the oldest.")
+  end
+
+  it "has the correct answer_options" do
+    expect(question.answer_options).to eq({
+      "18" => { "value" => "United Kingdom" },
+      "17" => { "value" => "Republic of Ireland" },
+      "19" => { "value" => "European Economic Area (EEA), excluding ROI" },
+      "12" => { "value" => "Other" },
+      "13" => { "value" => "Buyer prefers not to say" },
+    })
+  end
+
+  it "has correct conditional for" do
+    expect(question.conditional_for).to eq({
+      "othernational" => [12],
+    })
+  end
+
+  it "has correct hidden in check answers" do
+    expect(question.hidden_in_check_answers).to eq({
+      "depends_on" => [
+        {
+          "national" => 12,
+        },
+      ],
+    })
+  end
+end
diff --git a/spec/models/form/sales/questions/other_nationality1_spec.rb b/spec/models/form/sales/questions/other_nationality1_spec.rb
new file mode 100644
index 000000000..b01928efc
--- /dev/null
+++ b/spec/models/form/sales/questions/other_nationality1_spec.rb
@@ -0,0 +1,37 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::OtherNationality1, type: :model do
+  subject(:question) { described_class.new(question_id, question_definition, page) }
+
+  let(:question_id) { nil }
+  let(:question_definition) { nil }
+  let(:page) { instance_double(Form::Page) }
+
+  it "has correct page" do
+    expect(question.page).to eq(page)
+  end
+
+  it "has the correct id" do
+    expect(question.id).to eq("othernational")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("Nationality")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Buyer 1’s nationality")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("text")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to be_nil
+  end
+end
diff --git a/spec/models/form/sales/subsections/household_characteristics_spec.rb b/spec/models/form/sales/subsections/household_characteristics_spec.rb
index 364895cc8..21e496efd 100644
--- a/spec/models/form/sales/subsections/household_characteristics_spec.rb
+++ b/spec/models/form/sales/subsections/household_characteristics_spec.rb
@@ -17,14 +17,15 @@ RSpec.describe Form::Sales::Subsections::HouseholdCharacteristics, type: :model
         buyer_interview
         buyer_1_age
         buyer_1_gender_identity
-        buyer_1_live_in_property
-        buyer_2_relationship_to_buyer_1
         buyer_1_ethnic_group
         buyer_1_ethnic_background_black
         buyer_1_ethnic_background_asian
         buyer_1_ethnic_background_arab
         buyer_1_ethnic_background_mixed
         buyer_1_ethnic_background_white
+        buyer_1_nationality
+        buyer_1_live_in_property
+        buyer_2_relationship_to_buyer_1
         buyer_2_age
         buyer_2_gender_identity
         buyer_2_working_situation
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index 831502602..32b6fbc7d 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -61,14 +61,14 @@ RSpec.describe FormHandler do
     it "is able to load a current sales form" do
       form = form_handler.get_form("current_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(30)
+      expect(form.pages.count).to eq(31)
       expect(form.name).to eq("2022_2023_sales")
     end
 
     it "is able to load a previous sales form" do
       form = form_handler.get_form("previous_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(30)
+      expect(form.pages.count).to eq(31)
       expect(form.name).to eq("2021_2022_sales")
     end
   end