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..1c06793ce
--- /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..99b3340fd
--- /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/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..fdd1e1d7d
--- /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..0b5606bd8
--- /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