diff --git a/app/models/validations/tenancy_validations.rb b/app/models/validations/tenancy_validations.rb
index 84af343c6..b24933a56 100644
--- a/app/models/validations/tenancy_validations.rb
+++ b/app/models/validations/tenancy_validations.rb
@@ -32,4 +32,13 @@ module Validations::TenancyValidations
   def validate_other_tenancy_type(record)
     validate_other_field(record, 3, :tenancy, :tenancyother)
   end
+
+  def validate_joint_tenancy(record)
+    return unless record.collection_start_year
+
+    if record.hhmemb == 1 && record.joint != 2 && record.collection_start_year >= 2022
+      record.errors.add :joint, I18n.t("validations.tenancy.not_joint")
+      record.errors.add :hhmemb, I18n.t("validations.tenancy.joint_more_than_one_member")
+    end
+  end
 end
diff --git a/config/forms/2022_2023.json b/config/forms/2022_2023.json
index 911b1bece..513a67e15 100644
--- a/config/forms/2022_2023.json
+++ b/config/forms/2022_2023.json
@@ -946,7 +946,7 @@
               "header": "",
               "description": "",
               "questions": {
-                "joint_tenancy": {
+                "joint": {
                   "check_answer_label": "Is this a joint tenancy?",
                   "header": "Is this a joint tenancy?",
                   "hint_text": "For example, 27 3 2021.",
diff --git a/config/locales/en.yml b/config/locales/en.yml
index e0724df0f..fa6d731ff 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -221,6 +221,9 @@ en:
         secure: "Secure (including flexible) should be between 2 and 99 years or not specified"
       internal_transfer: "Answer must be secure tenancy as you already told us this tenancy is an internal transfer"
       cannot_be_internal_transfer: "Answer cannot be internal transfer as you already told us this is not a secure tenancy"
+      not_joint: "This cannot be a joint tenancy as you've told us there's only one person in the household"
+      joint_more_than_one_member: "There must be more than one person in the household as you've told us this is a joint tenancy"
+      
 
     declaration:
       missing: "You must show the DLUHC privacy notice to the tenant before you can submit this log."
diff --git a/spec/models/validations/tenancy_validations_spec.rb b/spec/models/validations/tenancy_validations_spec.rb
index 711b1481a..db6c999f4 100644
--- a/spec/models/validations/tenancy_validations_spec.rb
+++ b/spec/models/validations/tenancy_validations_spec.rb
@@ -146,4 +146,28 @@ RSpec.describe Validations::TenancyValidations do
       end
     end
   end
+
+  describe "joint tenancy validation" do
+    context "when the data inputter has said that there is only one member in the household" do
+      let(:record) { FactoryBot.create(:case_log, startdate: Time.zone.local(2022, 5, 1)) }
+      let(:expected_error) { I18n.t("validations.tenancy.not_joint") }
+      let(:hhmemb_expected_error) { I18n.t("validations.tenancy.joint_more_than_one_member") }
+
+      it "displays an error if the data inputter says the letting is a joint tenancy" do
+        record.hhmemb = 1
+        record.joint = 1
+        tenancy_validator.validate_joint_tenancy(record)
+        expect(record.errors["joint"]).to include(match(expected_error))
+        expect(record.errors["hhmemb"]).to include(match(hhmemb_expected_error))
+      end
+
+      it "does not display an error if the data inputter says the letting is not a joint tenancy" do
+        record.hhmemb = 1
+        record.joint = 2
+        tenancy_validator.validate_joint_tenancy(record)
+        expect(record.errors["joint"]).to be_empty
+        expect(record.errors["hhmemb"]).to be_empty
+      end
+    end
+  end
 end