diff --git a/octavia_lib/api/drivers/data_models.py b/octavia_lib/api/drivers/data_models.py
index d34f294..b04403b 100644
--- a/octavia_lib/api/drivers/data_models.py
+++ b/octavia_lib/api/drivers/data_models.py
@@ -103,7 +103,8 @@ class LoadBalancer(BaseDataModel):
                  listeners=Unset, loadbalancer_id=Unset, name=Unset,
                  pools=Unset, project_id=Unset, vip_address=Unset,
                  vip_network_id=Unset, vip_port_id=Unset, vip_subnet_id=Unset,
-                 vip_qos_policy_id=Unset, additional_vips=Unset):
+                 vip_qos_policy_id=Unset, additional_vips=Unset,
+                 availability_zone=Unset):
 
         self.admin_state_up = admin_state_up
         self.description = description
@@ -119,6 +120,7 @@ class LoadBalancer(BaseDataModel):
         self.vip_subnet_id = vip_subnet_id
         self.vip_qos_policy_id = vip_qos_policy_id
         self.additional_vips = additional_vips
+        self.availability_zone = availability_zone
 
 
 class Listener(BaseDataModel):
diff --git a/octavia_lib/common/constants.py b/octavia_lib/common/constants.py
index be73f7a..c9e437a 100644
--- a/octavia_lib/common/constants.py
+++ b/octavia_lib/common/constants.py
@@ -179,6 +179,7 @@ ADDITIONAL_VIPS = 'additional_vips'
 ADDRESS = 'address'
 ADMIN_STATE_UP = 'admin_state_up'
 ALLOWED_CIDRS = 'allowed_cidrs'
+AVAILABILITY_ZONE = 'availability_zone'
 BACKUP = 'backup'
 CA_TLS_CONTAINER_DATA = 'ca_tls_container_data'
 CA_TLS_CONTAINER_REF = 'ca_tls_container_ref'
diff --git a/octavia_lib/tests/unit/api/drivers/test_data_models.py b/octavia_lib/tests/unit/api/drivers/test_data_models.py
index 56460ed..d580793 100644
--- a/octavia_lib/tests/unit/api/drivers/test_data_models.py
+++ b/octavia_lib/tests/unit/api/drivers/test_data_models.py
@@ -44,6 +44,7 @@ class TestProviderDataModels(base.TestCase):
         self.healthmonitor_id = uuidutils.generate_uuid()
         self.l7policy_id = uuidutils.generate_uuid()
         self.l7rule_id = uuidutils.generate_uuid()
+        self.availability_zone = uuidutils.generate_uuid()
 
         self.ref_l7rule = data_models.L7Rule(
             admin_state_up=True,
@@ -113,7 +114,8 @@ class TestProviderDataModels(base.TestCase):
             vip_network_id=self.vip_network_id,
             vip_port_id=self.vip_port_id,
             vip_subnet_id=self.vip_subnet_id,
-            vip_qos_policy_id=self.vip_qos_policy_id)
+            vip_qos_policy_id=self.vip_qos_policy_id,
+            availability_zone=self.availability_zone)
 
         self.ref_vip = data_models.VIP(
             vip_address=self.vip_address,
@@ -201,7 +203,8 @@ class TestProviderDataModels(base.TestCase):
                             'description': 'One great load balancer',
                             'vip_subnet_id': self.vip_subnet_id,
                             'name': 'favorite_lb',
-                            'vip_qos_policy_id': self.vip_qos_policy_id}
+                            'vip_qos_policy_id': self.vip_qos_policy_id,
+                            'availability_zone': self.availability_zone}
 
         self.ref_listener_dict = {
             'admin_state_up': True,
@@ -245,7 +248,8 @@ class TestProviderDataModels(base.TestCase):
             'vip_network_id': self.vip_network_id,
             'vip_port_id': self.vip_port_id,
             'vip_subnet_id': self.vip_subnet_id,
-            'vip_qos_policy_id': self.vip_qos_policy_id}
+            'vip_qos_policy_id': self.vip_qos_policy_id,
+            'availability_zone': self.availability_zone}
 
         self.ref_vip_dict = {
             'vip_address': self.vip_address,
@@ -419,7 +423,8 @@ class TestProviderDataModels(base.TestCase):
             vip_network_id=self.vip_network_id,
             vip_port_id=self.vip_port_id,
             vip_subnet_id=self.vip_subnet_id,
-            vip_qos_policy_id=self.vip_qos_policy_id)
+            vip_qos_policy_id=self.vip_qos_policy_id,
+            availability_zone=self.availability_zone)
 
         ref_lb_dict_with_listener = deepcopy(self.ref_lb_dict_with_listener)
         ref_lb_dict_with_listener['pools'] = None
diff --git a/releasenotes/notes/add-az-to-loadbalancer-1e87b46ba29101d3.yaml b/releasenotes/notes/add-az-to-loadbalancer-1e87b46ba29101d3.yaml
new file mode 100644
index 0000000..19e4b56
--- /dev/null
+++ b/releasenotes/notes/add-az-to-loadbalancer-1e87b46ba29101d3.yaml
@@ -0,0 +1,4 @@
+---
+other:
+  - |
+    Load balancer objects now have an ``availability_zone`` attribute. This can be None.
diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 5ca5a50..5cfafbf 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -8,3 +8,7 @@
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
       - octavia-tox-tips
+    check:
+      jobs:
+        - octavia-tox-functional-py37-tips:
+            voting: false