diff --git a/app/models/form/sales/pages/about_staircase.rb b/app/models/form/sales/pages/about_staircase.rb
new file mode 100644
index 000000000..03ea570f7
--- /dev/null
+++ b/app/models/form/sales/pages/about_staircase.rb
@@ -0,0 +1,19 @@
+class Form::Sales::Pages::AboutStaircase < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "about_staircasing"
+    @header = "About the staircasing transaction"
+    @description = ""
+    @subsection = subsection
+    @depends_on = [{
+      "staircase" => 1,
+    }]
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::StaircaseBought.new(nil, nil, self),
+      Form::Sales::Questions::StaircaseOwned.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/staircase_bought.rb b/app/models/form/sales/questions/staircase_bought.rb
new file mode 100644
index 000000000..5afca794d
--- /dev/null
+++ b/app/models/form/sales/questions/staircase_bought.rb
@@ -0,0 +1,14 @@
+class Form::Sales::Questions::StaircaseBought < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "stairbought"
+    @check_answer_label = "Percentage bought in this staircasing transaction"
+    @header = "What percentage of the property has been bought in this staircasing transaction?"
+    @type = "numeric"
+    @page = page
+    @width = 5
+    @min = 0
+    @max = 100
+    @suffix = " percent"
+  end
+end
diff --git a/app/models/form/sales/questions/staircase_owned.rb b/app/models/form/sales/questions/staircase_owned.rb
new file mode 100644
index 000000000..0fa37ec7a
--- /dev/null
+++ b/app/models/form/sales/questions/staircase_owned.rb
@@ -0,0 +1,14 @@
+class Form::Sales::Questions::StaircaseOwned < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "stairowned"
+    @check_answer_label = "Percentage the buyer now owns in total"
+    @header = "What percentage of the property does the buyer now own in total?"
+    @type = "numeric"
+    @page = page
+    @width = 5
+    @min = 0
+    @max = 100
+    @suffix = " percent"
+  end
+end
diff --git a/app/models/form/sales/subsections/shared_ownership_scheme.rb b/app/models/form/sales/subsections/shared_ownership_scheme.rb
index 0856b3717..a80b482aa 100644
--- a/app/models/form/sales/subsections/shared_ownership_scheme.rb
+++ b/app/models/form/sales/subsections/shared_ownership_scheme.rb
@@ -10,6 +10,7 @@ class Form::Sales::Subsections::SharedOwnershipScheme < ::Form::Subsection
   def pages
     @pages ||= [
       Form::Sales::Pages::Staircase.new(nil, nil, self),
+      Form::Sales::Pages::AboutStaircase.new(nil, nil, self),
       Form::Sales::Pages::PreviousBedrooms.new(nil, nil, self),
     ]
   end
diff --git a/db/migrate/20221221081709_add_staircase_fields_to_sales.rb b/db/migrate/20221221081709_add_staircase_fields_to_sales.rb
new file mode 100644
index 000000000..0d6dd143e
--- /dev/null
+++ b/db/migrate/20221221081709_add_staircase_fields_to_sales.rb
@@ -0,0 +1,8 @@
+class AddStaircaseFieldsToSales < ActiveRecord::Migration[7.0]
+  def change
+    change_table :sales_logs, bulk: true do |t|
+      t.column :stairbought, :integer
+      t.column :stairowned, :integer
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 774735d7a..4f81ac646 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_12_20_174515) do
+ActiveRecord::Schema[7.0].define(version: 2022_12_21_081709) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -417,6 +417,8 @@ ActiveRecord::Schema[7.0].define(version: 2022_12_20_174515) do
     t.integer "ecstat6"
     t.integer "frombeds"
     t.integer "staircase"
+    t.integer "stairbought"
+    t.integer "stairowned"
     t.index ["created_by_id"], name: "index_sales_logs_on_created_by_id"
     t.index ["managing_organisation_id"], name: "index_sales_logs_on_managing_organisation_id"
     t.index ["owning_organisation_id"], name: "index_sales_logs_on_owning_organisation_id"
diff --git a/spec/models/form/sales/pages/about_staircase_spec.rb b/spec/models/form/sales/pages/about_staircase_spec.rb
new file mode 100644
index 000000000..9fe34ba86
--- /dev/null
+++ b/spec/models/form/sales/pages/about_staircase_spec.rb
@@ -0,0 +1,35 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::AboutStaircase, 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[stairbought stairowned])
+  end
+
+  it "has the correct id" do
+    expect(page.id).to eq("about_staircasing")
+  end
+
+  it "has the correct header" do
+    expect(page.header).to eq("About the staircasing transaction")
+  end
+
+  it "has the correct description" do
+    expect(page.description).to eq("")
+  end
+
+  it "has correct depends_on" do
+    expect(page.depends_on).to eq([{
+      "staircase" => 1,
+    }])
+  end
+end
diff --git a/spec/models/form/sales/questions/staircase_bought_spec.rb b/spec/models/form/sales/questions/staircase_bought_spec.rb
new file mode 100644
index 000000000..96716dbd3
--- /dev/null
+++ b/spec/models/form/sales/questions/staircase_bought_spec.rb
@@ -0,0 +1,57 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::StaircaseBought, 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("stairbought")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("What percentage of the property has been bought in this staircasing transaction?")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Percentage bought in this staircasing transaction")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("numeric")
+  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
+
+  it "has the correct width" do
+    expect(question.width).to eq(5)
+  end
+
+  it "has the correct inferred check answers value" do
+    expect(question.inferred_check_answers_value).to eq(nil)
+  end
+
+  it "has correct suffix" do
+    expect(question.suffix).to eq(" percent")
+  end
+
+  it "has correct min" do
+    expect(question.min).to eq(0)
+  end
+
+  it "has correct max" do
+    expect(question.max).to eq(100)
+  end
+end
diff --git a/spec/models/form/sales/questions/staircase_owned_spec.rb b/spec/models/form/sales/questions/staircase_owned_spec.rb
new file mode 100644
index 000000000..56b563990
--- /dev/null
+++ b/spec/models/form/sales/questions/staircase_owned_spec.rb
@@ -0,0 +1,57 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::StaircaseOwned, 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("stairowned")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("What percentage of the property does the buyer now own in total?")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Percentage the buyer now owns in total")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("numeric")
+  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
+
+  it "has the correct width" do
+    expect(question.width).to eq(5)
+  end
+
+  it "has the correct inferred check answers value" do
+    expect(question.inferred_check_answers_value).to eq(nil)
+  end
+
+  it "has correct suffix" do
+    expect(question.suffix).to eq(" percent")
+  end
+
+  it "has correct min" do
+    expect(question.min).to eq(0)
+  end
+
+  it "has correct max" do
+    expect(question.max).to eq(100)
+  end
+end
diff --git a/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb b/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
index c05c73dee..21e9b6938 100644
--- a/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
+++ b/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
@@ -15,6 +15,7 @@ RSpec.describe Form::Sales::Subsections::SharedOwnershipScheme, type: :model do
     expect(shared_ownership_scheme.pages.map(&:id)).to eq(
       %w[
         staircasing
+        about_staircasing
         previous_bedrooms
       ],
     )
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index 6c5f51a8e..1f6f4676c 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -52,14 +52,14 @@ 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(70)
+      expect(form.pages.count).to eq(71)
       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(70)
+      expect(form.pages.count).to eq(71)
       expect(form.name).to eq("2021_2022_sales")
     end
   end