diff --git a/planetstack/observer/steps/sync_slice_deployments.py b/planetstack/observer/steps/sync_slice_deployments.py
new file mode 100644
index 0000000..0f92796
--- /dev/null
+++ b/planetstack/observer/steps/sync_slice_deployments.py
@@ -0,0 +1,105 @@
+import os
+import base64
+from collections import defaultdict
+from netaddr import IPAddress, IPNetwork
+from django.db.models import F, Q
+from planetstack.config import Config
+from observer.openstacksyncstep import OpenStackSyncStep
+from core.models.site import SiteDeployments
+from core.models.slice import Slice, SliceDeployments
+from util.logger import Logger, logging
+
+logger = Logger(level=logging.INFO)
+
+class SyncSliceDeployments(OpenStackSyncStep):
+    provides=[Slice, SliceDeployments]
+    requested_interval=0
+
+    def fetch_pending(self):
+        # slice deployments are not visible to users. We must ensure
+        # slices are deployed at all deploymets available to their site.
+        site_deployments = SiteDeployment.objects.all()
+        site_deploy_lookup = defaultdict(list)
+        for site_deployment in site_deployments:
+            site_deploy_lookup[site_deployment.site].append(site_deployment.deployment)
+        
+        slice_deployments = SliceDeployment.objects.all()
+        slice_deploy_lookup = defaultdict(list)
+        for slice_deployment in slice_deployments:
+            slice_deploy_lookup[slice_deployment.slice].append(slice_deployment.deployment)
+        
+        for slice in Slice.objects.all():
+            expected_deployments = site_deploy_lookup[slice.site]
+            for expected_deployment in expected_deployments:
+                if slice not in slice_deploy_lookup or \
+                   expected_deployment not in slice_deploy_lookup[slice]:
+                    sd = SliceDeployments(slice=slice, deployment=expected_deployment)
+                    sd.save()
+
+        # now we can return all slice deployments that need to be enacted   
+        return SliceDeployments.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
+
+    def get_next_subnet(self, deployment=None):
+        # limit ourself to 10.0.x.x for now
+        valid_subnet = lambda net: net.startswith('10.0')
+        driver = self.driver.admin_driver(deployment=deployment)
+        subnets = driver.shell.quantum.list_subnets()['subnets']
+        ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
+                if valid_subnet(subnet['cidr'])]
+        ints.sort()
+        last_ip = IPAddress(ints[-1])
+        last_network = IPNetwork(str(last_ip) + "/24")
+        next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
+        return next_network
+
+    def sync_record(self, slice_deployment):
+        logger.info("sync'ing slice deployment %s" % slice_deployment)
+        if not slice_deployment.tenant_id:
+            nova_fields = {'tenant_name': slice_deployment.slice.name,
+                   'description': slice_deployment.slice.description,
+                   'enabled': slice_deployment.slice.enabled}
+            driver = self.driver.admin_driver(deployment=slice_deployment.deployment.name)
+            tenant = driver.create_tenant(**nova_fields)
+            slice_deployment.tenant_id = tenant.id
+
+            # XXX give caller an admin role at the tenant they've created
+            driver.add_user_role(slice_deployment.slice.creator.kuser_id, tenant.id, 'admin')
+
+            # refresh credentials using this tenant
+            client_driver = self.driver.client_driver(tenant=tenant.name, 
+                                                      deployment=slice_deployment.deployment.name)
+
+            # create network
+            network = client_driver.create_network(slice.name)
+            slice_deployment.network_id = network['id']
+
+            # create router
+            router = client_driver.create_router(slice.name)
+            slice_deployment.router_id = router['id']
+
+            # create subnet for slice's private network
+            next_subnet = self.get_next_subnet(deployment=slice_deployment.deployment.name)
+            cidr = str(next_subnet.cidr)
+            ip_version = next_subnet.version
+            start = str(next_subnet[2])
+            end = str(next_subnet[-2]) 
+            subnet = client_driver.create_subnet(name=slice.name,
+                                               network_id = network['id'],
+                                               cidr_ip = cidr,
+                                               ip_version = ip_version,
+                                               start = start,
+                                               end = end)
+            slice_deployment.subnet_id = subnet['id']
+            # add subnet as interface to slice's router
+            client_driver.add_router_interface(router['id'], subnet['id'])
+            # add external route
+            client_driver.add_external_route(subnet)
+
+
+        if slice_deployment.id and slice_deployment.tenant_id:
+            driver = self.driver.admin_driver(deployment=slice_deployment.deployment.name)
+            driver.update_tenant(slice_deployment.tenant_id,
+                                 description=slice_deployment.slice.description,
+                                 enabled=slice_deployment.slice.enabled)   
+
+        slice_deployment.save()