diff --git a/homeassistant/components/august.py b/homeassistant/components/august.py
index 850d972c3733..ce8e3d8de11b 100644
--- a/homeassistant/components/august.py
+++ b/homeassistant/components/august.py
@@ -225,8 +225,17 @@ def _update_doorbells(self):
         for doorbell in self._doorbells:
             _LOGGER.debug("Updating status for %s",
                           doorbell.device_name)
-            detail_by_id[doorbell.device_id] = self._api.get_doorbell_detail(
-                self._access_token, doorbell.device_id)
+            try:
+                detail_by_id[doorbell.device_id] =\
+                    self._api.get_doorbell_detail(
+                        self._access_token, doorbell.device_id)
+            except RequestException as ex:
+                _LOGGER.error("Request error trying to retrieve doorbell"
+                              " status for %s. %s", doorbell.device_name, ex)
+                detail_by_id[doorbell.device_id] = None
+            except Exception:
+                detail_by_id[doorbell.device_id] = None
+                raise
 
         _LOGGER.debug("Completed retrieving doorbell details")
         self._doorbell_detail_by_id = detail_by_id
@@ -260,8 +269,17 @@ def _update_doors(self):
         for lock in self._locks:
             _LOGGER.debug("Updating status for %s",
                           lock.device_name)
-            state_by_id[lock.device_id] = self._api.get_lock_door_status(
-                self._access_token, lock.device_id)
+
+            try:
+                state_by_id[lock.device_id] = self._api.get_lock_door_status(
+                    self._access_token, lock.device_id)
+            except RequestException as ex:
+                _LOGGER.error("Request error trying to retrieve door"
+                              " status for %s. %s", lock.device_name, ex)
+                state_by_id[lock.device_id] = None
+            except Exception:
+                state_by_id[lock.device_id] = None
+                raise
 
         _LOGGER.debug("Completed retrieving door status")
         self._door_state_by_id = state_by_id
@@ -275,10 +293,27 @@ def _update_locks(self):
         for lock in self._locks:
             _LOGGER.debug("Updating status for %s",
                           lock.device_name)
-            status_by_id[lock.device_id] = self._api.get_lock_status(
-                self._access_token, lock.device_id)
-            detail_by_id[lock.device_id] = self._api.get_lock_detail(
-                self._access_token, lock.device_id)
+            try:
+                status_by_id[lock.device_id] = self._api.get_lock_status(
+                    self._access_token, lock.device_id)
+            except RequestException as ex:
+                _LOGGER.error("Request error trying to retrieve door"
+                              " status for %s. %s", lock.device_name, ex)
+                status_by_id[lock.device_id] = None
+            except Exception:
+                status_by_id[lock.device_id] = None
+                raise
+
+            try:
+                detail_by_id[lock.device_id] = self._api.get_lock_detail(
+                    self._access_token, lock.device_id)
+            except RequestException as ex:
+                _LOGGER.error("Request error trying to retrieve door"
+                              " details for %s. %s", lock.device_name, ex)
+                detail_by_id[lock.device_id] = None
+            except Exception:
+                detail_by_id[lock.device_id] = None
+                raise
 
         _LOGGER.debug("Completed retrieving locks status")
         self._lock_status_by_id = status_by_id
diff --git a/homeassistant/components/binary_sensor/august.py b/homeassistant/components/binary_sensor/august.py
index 55b31a6da5f4..4116a791b01c 100644
--- a/homeassistant/components/binary_sensor/august.py
+++ b/homeassistant/components/binary_sensor/august.py
@@ -19,14 +19,15 @@
 
 def _retrieve_door_state(data, lock):
     """Get the latest state of the DoorSense sensor."""
-    from august.lock import LockDoorStatus
-    doorstate = data.get_door_state(lock.device_id)
-    return doorstate == LockDoorStatus.OPEN
+    return data.get_door_state(lock.device_id)
 
 
 def _retrieve_online_state(data, doorbell):
     """Get the latest state of the sensor."""
     detail = data.get_doorbell_detail(doorbell.device_id)
+    if detail is None:
+        return None
+
     return detail.is_online
 
 
@@ -138,9 +139,10 @@ def update(self):
         """Get the latest state of the sensor."""
         state_provider = SENSOR_TYPES_DOOR[self._sensor_type][2]
         self._state = state_provider(self._data, self._door)
+        self._available = self._state is not None
 
         from august.lock import LockDoorStatus
-        self._available = self._state != LockDoorStatus.UNKNOWN
+        self._state = self._state == LockDoorStatus.OPEN
 
 
 class AugustDoorbellBinarySensor(BinarySensorDevice):
@@ -152,6 +154,12 @@ def __init__(self, data, sensor_type, doorbell):
         self._sensor_type = sensor_type
         self._doorbell = doorbell
         self._state = None
+        self._available = False
+
+    @property
+    def available(self):
+        """Return the availability of this sensor."""
+        return self._available
 
     @property
     def is_on(self):
@@ -173,3 +181,4 @@ def update(self):
         """Get the latest state of the sensor."""
         state_provider = SENSOR_TYPES_DOORBELL[self._sensor_type][2]
         self._state = state_provider(self._data, self._doorbell)
+        self._available = self._state is not None
diff --git a/homeassistant/components/lock/august.py b/homeassistant/components/lock/august.py
index e8949255ee98..ce6792ceb39d 100644
--- a/homeassistant/components/lock/august.py
+++ b/homeassistant/components/lock/august.py
@@ -40,6 +40,7 @@ def __init__(self, data, lock):
         self._lock_status = None
         self._lock_detail = None
         self._changed_by = None
+        self._available = False
 
     def lock(self, **kwargs):
         """Lock the device."""
@@ -52,6 +53,8 @@ def unlock(self, **kwargs):
     def update(self):
         """Get the latest state of the sensor."""
         self._lock_status = self._data.get_lock_status(self._lock.device_id)
+        self._available = self._lock_status is not None
+
         self._lock_detail = self._data.get_lock_detail(self._lock.device_id)
 
         from august.activity import ActivityType
@@ -67,6 +70,11 @@ def name(self):
         """Return the name of this device."""
         return self._lock.device_name
 
+    @property
+    def available(self):
+        """Return the availability of this sensor."""
+        return self._available
+
     @property
     def is_locked(self):
         """Return true if device is on."""