diff --git a/ui/scripts/instanceWizard.js b/ui/scripts/instanceWizard.js
index 1d37f78c79f..b29ceaa4036 100644
--- a/ui/scripts/instanceWizard.js
+++ b/ui/scripts/instanceWizard.js
@@ -25,6 +25,12 @@
       return g_capabilities.customdiskofferingmaxsize;
     },
 
+    // Determines whether 'add new network' box is shown.
+    // -- return true to show, false to hide
+    showAddNetwork: function(args) {
+      return true;
+    },
+
     // Called in networks list, when VPC drop-down is changed
     // -- if vpcID given, return true if in network specified by vpcID
     // -- if vpcID == -1, return true if network is not associated with a VPC
diff --git a/ui/scripts/ui-custom/instanceWizard.js b/ui/scripts/ui-custom/instanceWizard.js
index a591d178e16..d2724a524f3 100644
--- a/ui/scripts/ui-custom/instanceWizard.js
+++ b/ui/scripts/ui-custom/instanceWizard.js
@@ -464,6 +464,16 @@
           },
 
           'network': function($step, formData) {
+            var showAddNetwork = true;
+
+            var checkShowAddNetwork = function($newNetwork) {
+              if (!showAddNetwork) {
+                $newNetwork.hide();
+              } else {
+                $newNetwork.show();
+              }
+            };
+
             var originalValues = function(formData) {
               // Default networks
               $step.find('input[type=radio]').filter(function() {
@@ -523,6 +533,13 @@
             // Show relevant conditional sub-step if present
             $step.find('.wizard-step-conditional').hide();
 
+            if ($.isFunction(args.showAddNetwork)) {
+              showAddNetwork = args.showAddNetwork({
+                data: formData,
+                context: context
+              });
+            }
+
             // Filter network list by VPC ID
             var filterNetworkList = function(vpcID) {
               var $selects = $step.find('.my-networks .select-container .select');
@@ -546,6 +563,7 @@
               } else {
                 $step.find('.my-networks .select-container').removeClass('single-select');
                 $addNetworkForm.show();
+                checkShowAddNetwork($addNetworkForm);
               }
               
               $selects.find('input[type=checkbox]').attr('checked', false);
@@ -648,6 +666,7 @@
                   );
 
                   originalValues(formData);
+                  checkShowAddNetwork($newNetwork);
                 }
               }
             };