diff --git a/src/openforms/contrib/brk/tests/files/vcr_cassettes/BRKValidatorIntegrationTestCase/BRKValidatorIntegrationTestCase.test_brk_validator_integration.yaml b/src/openforms/contrib/brk/tests/files/vcr_cassettes/BRKValidatorIntegrationTestCase/BRKValidatorIntegrationTestCase.test_brk_validator_integration.yaml
new file mode 100644
index 0000000000..efc877dbfc
--- /dev/null
+++ b/src/openforms/contrib/brk/tests/files/vcr_cassettes/BRKValidatorIntegrationTestCase/BRKValidatorIntegrationTestCase.test_brk_validator_integration.yaml
@@ -0,0 +1,40 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate, br
+      Connection:
+      - keep-alive
+      User-Agent:
+      - python-requests/2.31.0
+      X-Api-Key:
+      - fake_changeme_when_testing
+    method: GET
+    uri: https://api.brk.kadaster.nl/esd-eto-apikey/bevragen/v2/kadastraalonroerendezaken?postcode=1234AB&huisnummer=1&huisletter=A&huisnummertoevoeging=Add
+  response:
+    body:
+      string: '{"_links":{"self":{"href":"/kadastraalonroerendezaken?postcode=1234AB&huisnummer=1&huisletter=A&huisnummertoevoeging=Add"}},"_embedded":{}}'
+    headers:
+      Api-Version:
+      - 2.0.0
+      Connection:
+      - keep-alive
+      Content-Encoding:
+      - gzip
+      Content-Length:
+      - '133'
+      Content-Type:
+      - application/hal+json
+      Date:
+      - Thu, 04 Jan 2024 16:15:08 GMT
+      Keep-Alive:
+      - timeout=60
+      Server:
+      - Unspecified
+    status:
+      code: 200
+      message: ''
+version: 1
diff --git a/src/openforms/contrib/brk/tests/test_integration.py b/src/openforms/contrib/brk/tests/test_integration.py
new file mode 100644
index 0000000000..f09e54834c
--- /dev/null
+++ b/src/openforms/contrib/brk/tests/test_integration.py
@@ -0,0 +1,69 @@
+from unittest.mock import patch
+
+from django.utils.translation import gettext_lazy as _
+
+from rest_framework.reverse import reverse
+from rest_framework.test import APITestCase
+
+from openforms.authentication.constants import AuthAttribute
+from openforms.submissions.tests.factories import SubmissionFactory
+from openforms.submissions.tests.mixins import SubmissionsMixin
+from openforms.utils.tests.vcr import OFVCRMixin
+from openforms.validations.registry import Registry
+
+from ..validators import BRKZakelijkGerechtigdeValidator
+from .base import TEST_FILES, BRKTestMixin
+
+
+class BRKValidatorIntegrationTestCase(
+    SubmissionsMixin, OFVCRMixin, BRKTestMixin, APITestCase
+):
+    VCR_TEST_FILES = TEST_FILES
+
+    def setUp(self) -> None:
+        super().setUp()
+        register = Registry()
+        register(
+            "brk-zakelijk-gerechtigd",
+            verbose_name="dummy",
+            for_components=("addressNL",),
+        )(BRKZakelijkGerechtigdeValidator)
+
+        patcher = patch("openforms.validations.api.views.register", new=register)
+        patcher.start()
+        self.addCleanup(patcher.stop)
+
+    def test_brk_validator_integration(self) -> None:
+        submission = SubmissionFactory.create(
+            form__generate_minimal_setup=True,
+            form__authentication_backends=["demo"],
+            form__formstep__form_definition__login_required=False,
+            auth_info__attribute_hashed=False,
+            auth_info__attribute=AuthAttribute.bsn,
+            auth_info__value="12345678",
+            auth_info__plugin="demo",
+        )
+        self._add_submission_to_session(submission)
+
+        response = self.client.post(
+            reverse(
+                "api:validate-value", kwargs={"validator": "brk-zakelijk-gerechtigd"}
+            ),
+            {
+                "value": {
+                    "postcode": "1234 aB",
+                    "house_number": "1",
+                    "house_letter": "A",
+                    "house_number_addition": "Add",
+                },
+                "submission_uuid": str(submission.uuid),
+            },
+            format="json",
+        )
+
+        expected = {
+            "is_valid": False,
+            "messages": [_("No property found for this address.")],
+        }
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.data, expected)
diff --git a/src/openforms/contrib/brk/tests/test_validators.py b/src/openforms/contrib/brk/tests/test_validators.py
index e969ebd6fe..a86ae4acec 100644
--- a/src/openforms/contrib/brk/tests/test_validators.py
+++ b/src/openforms/contrib/brk/tests/test_validators.py
@@ -20,15 +20,6 @@
 class BRKValidatorTestCase(OFVCRMixin, BRKTestMixin, TestCase):
     VCR_TEST_FILES = TEST_FILES
 
-    def test_brk_validator_serializer(self):
-        serializer = BRKZakelijkGerechtigdeValidator.value_serializer(
-            data={"value": {"postcode": "1234 aB", "house_number": "1"}}
-        )
-        serializer.is_valid(raise_exception=True)
-        self.assertEqual(
-            serializer.data, {"value": {"postcode": "1234AB", "house_number": "1"}}
-        )
-
     def test_brk_validator_no_auth(self):
         validator = BRKZakelijkGerechtigdeValidator()