diff --git a/app/models/form/sales/pages/building_height_class.rb b/app/models/form/sales/pages/building_height_class.rb
new file mode 100644
index 000000000..3e3547225
--- /dev/null
+++ b/app/models/form/sales/pages/building_height_class.rb
@@ -0,0 +1,17 @@
+class Form::Sales::Pages::BuildingHeightClass < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "building_height_class"
+    @depends_on = [
+      { "proptype" => 1 },
+      { "proptype" => 2 },
+      { "proptype" => 9 },
+    ]
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::BuildingHeightClass.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/building_height_class.rb b/app/models/form/sales/questions/building_height_class.rb
new file mode 100644
index 000000000..016245fbc
--- /dev/null
+++ b/app/models/form/sales/questions/building_height_class.rb
@@ -0,0 +1,17 @@
+class Form::Sales::Questions::BuildingHeightClass < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "buildheightclass"
+    @type = "radio"
+    @answer_options = ANSWER_OPTIONS
+    @question_number = QUESTION_NUMBER_FROM_YEAR[form.start_date.year] || QUESTION_NUMBER_FROM_YEAR[QUESTION_NUMBER_FROM_YEAR.keys.max]
+  end
+
+  ANSWER_OPTIONS = {
+    "1" => { "value" => "High-rise" },
+    "2" => { "value" => "Low-rise" },
+    "3" => { "value" => "Don't know" },
+  }.freeze
+
+  QUESTION_NUMBER_FROM_YEAR = { 2026 => 17 }.freeze
+end
diff --git a/app/models/form/sales/subsections/property_information.rb b/app/models/form/sales/subsections/property_information.rb
index e33666208..07464ea1b 100644
--- a/app/models/form/sales/subsections/property_information.rb
+++ b/app/models/form/sales/subsections/property_information.rb
@@ -10,6 +10,7 @@ class Form::Sales::Subsections::PropertyInformation < ::Form::Subsection
     @pages ||= [
       (uprn_questions if form.start_date.year >= 2024),
       (Form::Sales::Pages::PropertyUnitType.new(nil, nil, self) if form.start_year_2025_or_later?),
+      (Form::Sales::Pages::BuildingHeightClass.new(nil, nil, self) if form.start_year_2026_or_later?),
       Form::Sales::Pages::PropertyNumberOfBedrooms.new(nil, nil, self),
       Form::Sales::Pages::AboutPriceValueCheck.new("about_price_bedrooms_value_check", nil, self),
       (Form::Sales::Pages::PropertyUnitType.new(nil, nil, self) unless form.start_year_2025_or_later?),
diff --git a/config/locales/forms/2026/sales/property_information.en.yml b/config/locales/forms/2026/sales/property_information.en.yml
index 70afb55d8..b63ea755c 100644
--- a/config/locales/forms/2026/sales/property_information.en.yml
+++ b/config/locales/forms/2026/sales/property_information.en.yml
@@ -59,6 +59,13 @@ en:
             hint_text: ""
             question_text: "What type of unit is the property?"
 
+          buildheightclass:
+            page_header: ""
+            check_answer_label: "Building height classification"
+            check_answer_prompt: ""
+            hint_text: "High-rise residential buildings are those containing 2 or more residential units and either have 7 or more storeys or are at least 18 metres in height. If unsure, answer based on the number of storeys."
+            question_text: "What is the building height classification?"
+
           builtype:
             page_header: ""
             check_answer_label: "Type of building"