diff --git a/src/lib/seam/components/AccessCodeDetails/AccessCodeDevice.tsx b/src/lib/seam/components/AccessCodeDetails/AccessCodeDevice.tsx
index eeb8e9425..db2330025 100644
--- a/src/lib/seam/components/AccessCodeDetails/AccessCodeDevice.tsx
+++ b/src/lib/seam/components/AccessCodeDetails/AccessCodeDevice.tsx
@@ -1,8 +1,11 @@
+import { useState } from 'react'
+
 import { useDevice } from 'lib/seam/devices/use-device.js'
 import { isLockDevice, type LockDevice } from 'lib/seam/locks/lock-device.js'
 import { useToggleLock } from 'lib/seam/locks/use-toggle-lock.js'
 import { Button } from 'lib/ui/Button.js'
 import { DeviceImage } from 'lib/ui/device/DeviceImage.js'
+import { Snackbar, type SnackbarVariant } from 'lib/ui/Snackbar/Snackbar.js'
 import { TextButton } from 'lib/ui/TextButton.js'
 
 export function AccessCodeDevice({
@@ -49,35 +52,64 @@ function Content(props: {
   onSelectDevice: (deviceId: string) => void
 }): JSX.Element {
   const { device, disableLockUnlock, onSelectDevice } = props
-  const toggleLock = useToggleLock()
+  const [snackbarVisible, setSnackbarVisible] = useState(false)
+  const [snackbarVariant, setSnackbarVariant] =
+    useState<SnackbarVariant>('success')
+
+  const toggleLock = useToggleLock({
+    onSuccess: () => {
+      setSnackbarVisible(true)
+      setSnackbarVariant('success')
+    },
+    onError: () => {
+      setSnackbarVisible(true)
+      setSnackbarVariant('error')
+    },
+  })
 
   const toggleLockLabel = device.properties.locked ? t.unlock : t.lock
 
   return (
-    <div className='seam-access-code-device'>
-      <div className='seam-device-image'>
-        <DeviceImage device={device} />
-      </div>
-      <div className='seam-body'>
-        <div>{device.properties.name}</div>
-        <TextButton
-          onClick={() => {
-            onSelectDevice(device.device_id)
-          }}
-        >
-          {t.deviceDetails}
-        </TextButton>
+    <>
+      <Snackbar
+        variant={snackbarVariant}
+        visible={snackbarVisible}
+        onClose={() => {
+          setSnackbarVisible(false)
+        }}
+        message={
+          snackbarVariant === 'success'
+            ? t.successfullyUpdated
+            : t.failedToUpdate
+        }
+        autoDismiss
+      />
+
+      <div className='seam-access-code-device'>
+        <div className='seam-device-image'>
+          <DeviceImage device={device} />
+        </div>
+        <div className='seam-body'>
+          <div>{device.properties.name}</div>
+          <TextButton
+            onClick={() => {
+              onSelectDevice(device.device_id)
+            }}
+          >
+            {t.deviceDetails}
+          </TextButton>
+        </div>
+        {!disableLockUnlock && device.properties.online && (
+          <Button
+            onClick={() => {
+              toggleLock.mutate(device)
+            }}
+          >
+            {toggleLockLabel}
+          </Button>
+        )}
       </div>
-      {!disableLockUnlock && device.properties.online && (
-        <Button
-          onClick={() => {
-            toggleLock.mutate(device)
-          }}
-        >
-          {toggleLockLabel}
-        </Button>
-      )}
-    </div>
+    </>
   )
 }
 
@@ -85,4 +117,6 @@ const t = {
   deviceDetails: 'Device details',
   unlock: 'Unlock',
   lock: 'Lock',
+  successfullyUpdated: 'Lock status has been successfully updated',
+  failedToUpdate: 'Failed to update lock status',
 }
diff --git a/src/lib/seam/components/DeviceDetails/LockDeviceDetails.tsx b/src/lib/seam/components/DeviceDetails/LockDeviceDetails.tsx
index 9e19e47d0..cfc741a6c 100644
--- a/src/lib/seam/components/DeviceDetails/LockDeviceDetails.tsx
+++ b/src/lib/seam/components/DeviceDetails/LockDeviceDetails.tsx
@@ -1,4 +1,5 @@
 import classNames from 'classnames'
+import { useState } from 'react'
 
 import { ChevronRightIcon } from 'lib/icons/ChevronRight.js'
 import { useAccessCodes } from 'lib/seam/access-codes/use-access-codes.js'
@@ -16,6 +17,7 @@ import { DeviceImage } from 'lib/ui/device/DeviceImage.js'
 import { EditableDeviceName } from 'lib/ui/device/EditableDeviceName.js'
 import { OnlineStatus } from 'lib/ui/device/OnlineStatus.js'
 import { ContentHeader } from 'lib/ui/layout/ContentHeader.js'
+import { Snackbar, type SnackbarVariant } from 'lib/ui/Snackbar/Snackbar.js'
 import { useToggle } from 'lib/ui/use-toggle.js'
 
 interface LockDeviceDetailsProps extends NestedSpecificDeviceDetailsProps {
@@ -38,11 +40,25 @@ export function LockDeviceDetails({
   onEditName,
 }: LockDeviceDetailsProps): JSX.Element | null {
   const [accessCodesOpen, toggleAccessCodesOpen] = useToggle()
-  const toggleLock = useToggleLock()
   const { accessCodes } = useAccessCodes({
     device_id: device.device_id,
   })
 
+  const [snackbarVisible, setSnackbarVisible] = useState(false)
+  const [snackbarVariant, setSnackbarVariant] =
+    useState<SnackbarVariant>('success')
+
+  const toggleLock = useToggleLock({
+    onSuccess: () => {
+      setSnackbarVisible(true)
+      setSnackbarVariant('success')
+    },
+    onError: () => {
+      setSnackbarVisible(true)
+      setSnackbarVariant('error')
+    },
+  })
+
   const lockStatus = device.properties.locked ? t.locked : t.unlocked
   const toggleLockLabel = device.properties.locked ? t.unlock : t.lock
 
@@ -88,87 +104,103 @@ export function LockDeviceDetails({
   ]
 
   return (
-    <div className={classNames('seam-device-details', className)}>
-      <ContentHeader title='Device' onBack={onBack} />
-      <div className='seam-body'>
-        <div className='seam-summary'>
-          <div className='seam-content'>
-            <div className='seam-image'>
-              <DeviceImage device={device} />
-            </div>
-            <div className='seam-info'>
-              <span className='seam-label'>{t.device}</span>
-              <EditableDeviceName
-                tagName='h4'
-                value={device.properties.name}
-                className='seam-device-name'
-                onEdit={onEditName}
-              />
-              <div className='seam-properties'>
-                <span className='seam-label'>{t.status}:</span>{' '}
-                <OnlineStatus device={device} />
-                {device.properties.online && (
-                  <>
-                    <span className='seam-label'>{t.power}:</span>{' '}
-                    <BatteryStatusIndicator device={device} />
-                  </>
-                )}
-                <DeviceModel device={device} />
+    <>
+      <Snackbar
+        variant={snackbarVariant}
+        visible={snackbarVisible}
+        onClose={() => {
+          setSnackbarVisible(false)
+        }}
+        message={
+          snackbarVariant === 'success'
+            ? t.successfullyUpdated
+            : t.failedToUpdate
+        }
+        autoDismiss
+      />
+
+      <div className={classNames('seam-device-details', className)}>
+        <ContentHeader title='Device' onBack={onBack} />
+        <div className='seam-body'>
+          <div className='seam-summary'>
+            <div className='seam-content'>
+              <div className='seam-image'>
+                <DeviceImage device={device} />
+              </div>
+              <div className='seam-info'>
+                <span className='seam-label'>{t.device}</span>
+                <EditableDeviceName
+                  tagName='h4'
+                  value={device.properties.name}
+                  className='seam-device-name'
+                  onEdit={onEditName}
+                />
+                <div className='seam-properties'>
+                  <span className='seam-label'>{t.status}:</span>{' '}
+                  <OnlineStatus device={device} />
+                  {device.properties.online && (
+                    <>
+                      <span className='seam-label'>{t.power}:</span>{' '}
+                      <BatteryStatusIndicator device={device} />
+                    </>
+                  )}
+                  <DeviceModel device={device} />
+                </div>
               </div>
             </div>
+            <Alerts alerts={alerts} className='seam-alerts-space-top' />
           </div>
-          <Alerts alerts={alerts} className='seam-alerts-space-top' />
-        </div>
-        <div className='seam-box'>
-          <div
-            className='seam-content seam-access-codes'
-            onClick={toggleAccessCodesOpen}
-          >
-            <span className='seam-value'>
-              {accessCodeCount} {t.accessCodes}
-            </span>
-            <ChevronRightIcon />
+          <div className='seam-box'>
+            <div
+              className='seam-content seam-access-codes'
+              onClick={toggleAccessCodesOpen}
+            >
+              <span className='seam-value'>
+                {accessCodeCount} {t.accessCodes}
+              </span>
+              <ChevronRightIcon />
+            </div>
           </div>
-        </div>
 
-        <div className='seam-box'>
-          {device.properties.locked && device.properties.online && (
-            <div className='seam-content seam-lock-status'>
-              <div>
-                <span className='seam-label'>{t.lockStatus}</span>
-                <span className='seam-value'>{lockStatus}</span>
-              </div>
-              <div className='seam-right'>
-                {!disableLockUnlock &&
-                  device.capabilities_supported.includes('lock') && (
-                    <Button
-                      size='small'
-                      onClick={() => {
-                        toggleLock.mutate(device)
-                      }}
-                    >
-                      {toggleLockLabel}
-                    </Button>
-                  )}
+          <div className='seam-box'>
+            {device.properties.locked && device.properties.online && (
+              <div className='seam-content seam-lock-status'>
+                <div>
+                  <span className='seam-label'>{t.lockStatus}</span>
+                  <span className='seam-value'>{lockStatus}</span>
+                </div>
+                <div className='seam-right'>
+                  {!disableLockUnlock &&
+                    device.capabilities_supported.includes('lock') && (
+                      <Button
+                        size='small'
+                        onClick={() => {
+                          toggleLock.mutate(device)
+                        }}
+                      >
+                        {toggleLockLabel}
+                      </Button>
+                    )}
+                </div>
               </div>
-            </div>
-          )}
+            )}
 
-          <AccessCodeLength
-            supportedCodeLengths={
-              device.properties?.supported_code_lengths ?? []
+            <AccessCodeLength
+              supportedCodeLengths={
+                device.properties?.supported_code_lengths ?? []
+              }
+            />
+          </div>
+          <DeviceInfo
+            device={device}
+            disableConnectedAccountInformation={
+              disableConnectedAccountInformation
             }
+            disableResourceIds={disableResourceIds}
           />
         </div>
-        <DeviceInfo
-          device={device}
-          disableConnectedAccountInformation={
-            disableConnectedAccountInformation
-          }
-          disableResourceIds={disableResourceIds}
-        />
       </div>
-    </div>
+    </>
   )
 }
 
@@ -208,4 +240,6 @@ const t = {
   lockStatus: 'Lock status',
   status: 'Status',
   power: 'Power',
+  successfullyUpdated: 'Lock status has been successfully updated',
+  failedToUpdate: 'Failed to update lock status',
 }
diff --git a/src/lib/seam/locks/use-toggle-lock.ts b/src/lib/seam/locks/use-toggle-lock.ts
index 502c44e7a..8c4a87b15 100644
--- a/src/lib/seam/locks/use-toggle-lock.ts
+++ b/src/lib/seam/locks/use-toggle-lock.ts
@@ -12,8 +12,6 @@ import {
 
 import { NullSeamClientError, useSeamClient } from 'lib/seam/use-seam-client.js'
 
-export type UseToggleLockParams = never
-
 export type UseToggleLockData = undefined
 
 export type UseToggleLockMutationVariables = Pick<Device, 'device_id'> & {
@@ -29,7 +27,14 @@ type MutationError =
   | SeamActionAttemptFailedError<ToggleLockActionAttempt>
   | SeamActionAttemptTimeoutError<ToggleLockActionAttempt>
 
-export function useToggleLock(): UseMutationResult<
+interface UseToggleLockParams {
+  onError?: () => void
+  onSuccess?: () => void
+}
+
+export function useToggleLock(
+  params: UseToggleLockParams = {}
+): UseMutationResult<
   UseToggleLockData,
   MutationError,
   UseToggleLockMutationVariables
@@ -92,6 +97,8 @@ export function useToggleLock(): UseMutationResult<
       )
     },
     onError: async (_error, variables) => {
+      params.onError?.()
+
       await queryClient.invalidateQueries({
         queryKey: ['devices', 'list'],
       })
@@ -99,5 +106,8 @@ export function useToggleLock(): UseMutationResult<
         queryKey: ['devices', 'get', { device_id: variables.device_id }],
       })
     },
+    onSuccess() {
+      params.onSuccess?.()
+    },
   })
 }
diff --git a/src/lib/ui/Snackbar/Snackbar.tsx b/src/lib/ui/Snackbar/Snackbar.tsx
index a9f7a339b..66a49201b 100644
--- a/src/lib/ui/Snackbar/Snackbar.tsx
+++ b/src/lib/ui/Snackbar/Snackbar.tsx
@@ -5,9 +5,9 @@ import { CheckGreenIcon } from 'lib/icons/CheckGreen.js'
 import { CloseWhiteIcon } from 'lib/icons/CloseWhite.js'
 import { ExclamationCircleIcon } from 'lib/icons/ExclamationCircle.js'
 
-type SnackbarVariant = 'success' | 'error'
+export type SnackbarVariant = 'success' | 'error'
 
-interface SnackbarProps {
+export interface SnackbarProps {
   message: string
   variant: SnackbarVariant
   visible: boolean