diff --git a/heat/engine/clients/os/blazar.py b/heat/engine/clients/os/blazar.py
index 24429d4429..9d1d650bf2 100644
--- a/heat/engine/clients/os/blazar.py
+++ b/heat/engine/clients/os/blazar.py
@@ -15,7 +15,9 @@ from blazarclient import client as blazar_client
 from blazarclient import exception as client_exception
 from oslo_config import cfg
 
+from heat.common import exception
 from heat.engine.clients import client_plugin
+from heat.engine import constraints
 
 CLIENT_NAME = 'blazar'
 
@@ -58,3 +60,16 @@ class BlazarClientPlugin(client_plugin.ClientPlugin):
 
     def get_host(self, id):
         return self.client().host.get(id)
+
+
+class BlazarBaseConstraint(constraints.BaseCustomConstraint):
+
+    resource_client_name = CLIENT_NAME
+
+
+class ReservationConstraint(BlazarBaseConstraint):
+    expected_exceptions = (
+        exception.EntityNotFound,
+        client_exception.BlazarClientException,)
+
+    resource_getter_name = 'get_lease'
diff --git a/setup.cfg b/setup.cfg
index 319e8d16c7..0500f344c1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -108,6 +108,7 @@ heat.constraints =
     # service constraints
     barbican.container = heat.engine.clients.os.barbican:ContainerConstraint
     barbican.secret = heat.engine.clients.os.barbican:SecretConstraint
+    blazar.reservation = heat.engine.clients.os.blazar:ReservationConstraint
     cinder.backup = heat.engine.clients.os.cinder:VolumeBackupConstraint
     cinder.qos_specs = heat.engine.clients.os.cinder:QoSSpecsConstraint
     cinder.snapshot = heat.engine.clients.os.cinder:VolumeSnapshotConstraint