diff --git a/lib/tasks/generate_documentation.rake b/lib/tasks/generate_documentation.rake
index 15388f2dc..fec1fbed0 100644
--- a/lib/tasks/generate_documentation.rake
+++ b/lib/tasks/generate_documentation.rake
@@ -465,4 +465,43 @@ namespace :generate_documentation do
       end
     end
   end
+
+  desc "Generate documentation for lettings numeric validations"
+  task add_numeric_lettings_validations: :environment do
+    form = FormHandler.instance.forms["current_lettings"]
+
+    form.numeric_questions.each do |question|
+      next unless question.min || question.max
+
+      field = question.id
+      min = [question.prefix, question.min].join("") if question.min
+      max = [question.prefix, question.max].join("") if question.max
+
+      error_message = I18n.t("validations.numeric.above_min", field:, min:)
+      validation_name = "minimum"
+      validation_description = "Field value is lower than the minimum value"
+
+      if min && max
+        validation_name = "range"
+        error_message = I18n.t("validations.numeric.within_range", field:, min:, max:)
+        validation_description = "Field value is lower than the minimum value or higher than the maximum value"
+      end
+
+      if Validation.where(validation_name:, field:).exists?
+
+        Rails.logger.info("Validation #{validation_name} already exists for #{field}")
+        next
+      end
+
+      Validation.create!(log_type: "lettings",
+                         validation_name:,
+                         description: validation_description,
+                         field:,
+                         error_message:,
+                         case: validation_description,
+                         section: form.get_question(field, nil)&.subsection&.id,
+                         validation_type: validation_name,
+                         hard_soft: "hard")
+    end
+  end
 end
diff --git a/spec/lib/tasks/generate_documentation_spec.rb b/spec/lib/tasks/generate_documentation_spec.rb
index a69f52d32..5b960db02 100644
--- a/spec/lib/tasks/generate_documentation_spec.rb
+++ b/spec/lib/tasks/generate_documentation_spec.rb
@@ -181,4 +181,37 @@ RSpec.describe "generate_documentation" do
       end
     end
   end
+
+  describe ":add_numeric_lettings_validations", type: :task do
+    subject(:task) { Rake::Task["generate_documentation:add_numeric_lettings_validations"] }
+
+    before do
+      Rake.application.rake_require("tasks/generate_documentation")
+      Rake::Task.define_task(:environment)
+      task.reenable
+    end
+
+    context "when the rake task is run" do
+      it "creates new validation documentation records" do
+        expect { task.invoke }.to change(Validation, :count)
+        expect(Validation.where(validation_name: "minimum").count).to be_positive
+        expect(Validation.where(validation_name: "range").count).to be_positive
+        any_min_validation = Validation.where(validation_name: "minimum").first
+        expect(any_min_validation.description).to include("Field value is lower than the minimum value")
+        expect(any_min_validation.field).not_to be_empty
+        expect(any_min_validation.error_message).to include("must be at least")
+        expect(any_min_validation.case).to include("Field value is lower than the minimum value")
+        expect(any_min_validation.from).to be_nil
+        expect(any_min_validation.to).to be_nil
+        expect(any_min_validation.validation_type).to eq("minimum")
+        expect(any_min_validation.hard_soft).to eq("hard")
+        expect(any_min_validation.other_validated_models).to be_nil
+      end
+
+      it "skips if the validation already exists in the database" do
+        task.invoke
+        expect { task.invoke }.not_to change(Validation, :count)
+      end
+    end
+  end
 end