diff --git a/google/resource_compute_interconnect_attachment.go b/google/resource_compute_interconnect_attachment.go
index 65bd304a..e9373b1f 100644
--- a/google/resource_compute_interconnect_attachment.go
+++ b/google/resource_compute_interconnect_attachment.go
@@ -59,6 +59,14 @@ func resourceComputeInterconnectAttachment() *schema.Resource {
 				ForceNew:         true,
 				DiffSuppressFunc: compareSelfLinkOrResourceName,
 			},
+			"candidate_subnets": {
+				Type:     schema.TypeList,
+				Optional: true,
+				ForceNew: true,
+				Elem: &schema.Schema{
+					Type: schema.TypeString,
+				},
+			},
 			"description": {
 				Type:     schema.TypeString,
 				Optional: true,
@@ -71,6 +79,11 @@ func resourceComputeInterconnectAttachment() *schema.Resource {
 				ForceNew:         true,
 				DiffSuppressFunc: compareSelfLinkOrResourceName,
 			},
+			"vlan_tag8021q": {
+				Type:     schema.TypeInt,
+				Optional: true,
+				ForceNew: true,
+			},
 			"cloud_router_ip_address": {
 				Type:     schema.TypeString,
 				Computed: true,
@@ -142,6 +155,18 @@ func resourceComputeInterconnectAttachmentCreate(d *schema.ResourceData, meta in
 	} else if v, ok := d.GetOkExists("name"); !isEmptyValue(reflect.ValueOf(nameProp)) && (ok || !reflect.DeepEqual(v, nameProp)) {
 		obj["name"] = nameProp
 	}
+	candidateSubnetsProp, err := expandComputeInterconnectAttachmentCandidateSubnets(d.Get("candidate_subnets"), d, config)
+	if err != nil {
+		return err
+	} else if v, ok := d.GetOkExists("candidate_subnets"); !isEmptyValue(reflect.ValueOf(candidateSubnetsProp)) && (ok || !reflect.DeepEqual(v, candidateSubnetsProp)) {
+		obj["candidateSubnets"] = candidateSubnetsProp
+	}
+	vlanTag8021qProp, err := expandComputeInterconnectAttachmentVlanTag8021q(d.Get("vlan_tag8021q"), d, config)
+	if err != nil {
+		return err
+	} else if v, ok := d.GetOkExists("vlan_tag8021q"); !isEmptyValue(reflect.ValueOf(vlanTag8021qProp)) && (ok || !reflect.DeepEqual(v, vlanTag8021qProp)) {
+		obj["vlanTag8021q"] = vlanTag8021qProp
+	}
 	regionProp, err := expandComputeInterconnectAttachmentRegion(d.Get("region"), d, config)
 	if err != nil {
 		return err
@@ -240,6 +265,12 @@ func resourceComputeInterconnectAttachmentRead(d *schema.ResourceData, meta inte
 	if err := d.Set("name", flattenComputeInterconnectAttachmentName(res["name"], d)); err != nil {
 		return fmt.Errorf("Error reading InterconnectAttachment: %s", err)
 	}
+	if err := d.Set("candidate_subnets", flattenComputeInterconnectAttachmentCandidateSubnets(res["candidateSubnets"], d)); err != nil {
+		return fmt.Errorf("Error reading InterconnectAttachment: %s", err)
+	}
+	if err := d.Set("vlan_tag8021q", flattenComputeInterconnectAttachmentVlanTag8021q(res["vlanTag8021q"], d)); err != nil {
+		return fmt.Errorf("Error reading InterconnectAttachment: %s", err)
+	}
 	if err := d.Set("region", flattenComputeInterconnectAttachmentRegion(res["region"], d)); err != nil {
 		return fmt.Errorf("Error reading InterconnectAttachment: %s", err)
 	}
@@ -361,6 +392,20 @@ func flattenComputeInterconnectAttachmentName(v interface{}, d *schema.ResourceD
 	return v
 }
 
+func flattenComputeInterconnectAttachmentCandidateSubnets(v interface{}, d *schema.ResourceData) interface{} {
+	return v
+}
+
+func flattenComputeInterconnectAttachmentVlanTag8021q(v interface{}, d *schema.ResourceData) interface{} {
+	// Handles the string fixed64 format
+	if strVal, ok := v.(string); ok {
+		if intVal, err := strconv.ParseInt(strVal, 10, 64); err == nil {
+			return intVal
+		} // let terraform core handle it if we can't convert the string to an int.
+	}
+	return v
+}
+
 func flattenComputeInterconnectAttachmentRegion(v interface{}, d *schema.ResourceData) interface{} {
 	if v == nil {
 		return v
@@ -388,6 +433,14 @@ func expandComputeInterconnectAttachmentName(v interface{}, d *schema.ResourceDa
 	return v, nil
 }
 
+func expandComputeInterconnectAttachmentCandidateSubnets(v interface{}, d *schema.ResourceData, config *Config) (interface{}, error) {
+	return v, nil
+}
+
+func expandComputeInterconnectAttachmentVlanTag8021q(v interface{}, d *schema.ResourceData, config *Config) (interface{}, error) {
+	return v, nil
+}
+
 func expandComputeInterconnectAttachmentRegion(v interface{}, d *schema.ResourceData, config *Config) (interface{}, error) {
 	f, err := parseGlobalFieldValue("regions", v.(string), "project", d, config, true)
 	if err != nil {
diff --git a/website/docs/r/compute_interconnect_attachment.html.markdown b/website/docs/r/compute_interconnect_attachment.html.markdown
index 46d6642c..8de73009 100644
--- a/website/docs/r/compute_interconnect_attachment.html.markdown
+++ b/website/docs/r/compute_interconnect_attachment.html.markdown
@@ -76,6 +76,20 @@ The following arguments are supported:
   (Optional)
   An optional description of this resource.
 
+* `candidate_subnets` -
+  (Optional)
+  Up to 16 candidate prefixes that can be used to restrict the allocation
+  of cloudRouterIpAddress and customerRouterIpAddress for this attachment.
+  All prefixes must be within link-local address space (169.254.0.0/16)
+  and must be /29 or shorter (/28, /27, etc). Google will attempt to select
+  an unused /29 from the supplied candidate prefix(es). The request will
+  fail if all possible /29s are in use on Google's edge. If not supplied,
+  Google will randomly select an unused /29 from all of link-local space.
+
+* `vlan_tag8021q` -
+  (Optional)
+  The IEEE 802.1Q VLAN tag for this attachment, in the range 2-4094.
+
 * `region` -
   (Optional)
   Region where the regional interconnect attachment resides.