diff --git a/src/registrar/models/domain.py b/src/registrar/models/domain.py
index 6c94bd8d7..7feeb820d 100644
--- a/src/registrar/models/domain.py
+++ b/src/registrar/models/domain.py
@@ -201,6 +201,14 @@ class Domain(TimeStampedModel, DomainHelper):
         """Get the `cr_date` element from the registry."""
         return self._get_property("cr_date")
 
+    @creation_date.setter  # type: ignore
+    def creation_date(self, ex_date: date):
+        """
+        Direct setting of the creation date in the registry is not implemented.
+
+        Creation date can only be set by registry."""
+        raise NotImplementedError()
+
     @Cache
     def last_transferred_date(self) -> date:
         """Get the `tr_date` element from the registry."""
@@ -969,11 +977,11 @@ class Domain(TimeStampedModel, DomainHelper):
         Check if the domain's expiration date is in the past.
         Returns True if expired, False otherwise.
         """
-        if not self.expiration_date:
+        if self.expiration_date is None:
             return True
         now = timezone.now().date()
         return self.expiration_date < now
-    
+
     def map_epp_contact_to_public_contact(self, contact: eppInfo.InfoContactResultData, contact_id, contact_type):
         """Maps the Epp contact representation to a PublicContact object.
 
@@ -1620,10 +1628,22 @@ class Domain(TimeStampedModel, DomainHelper):
                 if old_cache_contacts is not None:
                     cleaned["contacts"] = old_cache_contacts
 
+            requires_save = False
+
             # if expiration date from registry does not match what is in db,
             # update the db
             if "ex_date" in cleaned and cleaned["ex_date"] != self.expiration_date:
                 self.expiration_date = cleaned["ex_date"]
+                requires_save = True
+
+            # if creation_date from registry does not match what is in db,
+            # update the db
+            if "cr_date" in cleaned and cleaned["cr_date"] != self.created_at:
+                self.created_at = cleaned["cr_date"]
+                requires_save = True
+
+            # if either registration date or creation date need updating
+            if requires_save:
                 self.save()
 
             self._cache = cleaned
diff --git a/src/registrar/tests/test_models_domain.py b/src/registrar/tests/test_models_domain.py
index 39f63c942..2f54d7794 100644
--- a/src/registrar/tests/test_models_domain.py
+++ b/src/registrar/tests/test_models_domain.py
@@ -1962,6 +1962,9 @@ class TestExpirationDate(MockEppLib):
         """
         super().setUp()
         # for the tests, need a domain in the ready state
+        # mock data for self.domain includes the following dates:
+        # cr_date=datetime.datetime(2023, 5, 25, 19, 45, 35)
+        # ex_date=datetime.date(2023, 5, 25)
         self.domain, _ = Domain.objects.get_or_create(name="fake.gov", state=Domain.State.READY)
         # for the test, need a domain that will raise an exception
         self.domain_w_error, _ = Domain.objects.get_or_create(name="fake-error.gov", state=Domain.State.READY)
@@ -1987,6 +1990,23 @@ class TestExpirationDate(MockEppLib):
         with self.assertRaises(RegistryError):
             self.domain_w_error.renew_domain()
 
+    def test_is_expired(self):
+        """assert that is_expired returns true for expiration_date in past"""
+        # force fetch_cache to be called
+        self.domain.statuses
+        self.assertTrue(self.domain.is_expired)
+
+    def test_is_not_expired(self):
+        """assert that is_expired returns false for expiration in future"""
+        # to do this, need to mock value returned from timezone.now
+        # set now to 2023-01-01
+        mocked_datetime = datetime.datetime(2023, 1, 1, 12, 0, 0)
+        # force fetch_cache which sets the expiration date to 2023-05-25
+        self.domain.statuses
+
+        with patch("registrar.models.domain.timezone.now", return_value=mocked_datetime):
+            self.assertFalse(self.domain.is_expired())
+
     def test_expiration_date_updated_on_info_domain_call(self):
         """assert that expiration date in db is updated on info domain call"""
         # force fetch_cache to be called
@@ -1995,6 +2015,36 @@ class TestExpirationDate(MockEppLib):
         self.assertEquals(self.domain.expiration_date, test_date)
 
 
+class TestCreationDate(MockEppLib):
+    """Created_at in domain model is updated from EPP"""
+
+    def setUp(self):
+        """
+        Domain exists in registry
+        """
+        super().setUp()
+        # for the tests, need a domain with a creation date
+        self.domain, _ = Domain.objects.get_or_create(name="fake.gov", state=Domain.State.READY)
+        # creation_date returned from mockDataInfoDomain with creation date:
+        # cr_date=datetime.datetime(2023, 5, 25, 19, 45, 35)
+        self.creation_date = datetime.datetime(2023, 5, 25, 19, 45, 35)
+
+    def tearDown(self):
+        Domain.objects.all().delete()
+        super().tearDown()
+
+    def test_creation_date_setter_not_implemented(self):
+        """assert that the setter for creation date is not implemented and will raise error"""
+        with self.assertRaises(NotImplementedError):
+            self.domain.creation_date = datetime.date.today()
+
+    def test_creation_date_updated_on_info_domain_call(self):
+        """assert that creation date in db is updated on info domain call"""
+        # force fetch_cache to be called
+        self.domain.statuses
+        self.assertEquals(self.domain.created_at, self.creation_date)
+
+
 class TestAnalystClientHold(MockEppLib):
     """Rule: Analysts may suspend or restore a domain by using client hold"""