diff --git a/homeassistant/components/bmw_connected_drive/binary_sensor.py b/homeassistant/components/bmw_connected_drive/binary_sensor.py
index 43beb2cbf81..df25efb6d5e 100644
--- a/homeassistant/components/bmw_connected_drive/binary_sensor.py
+++ b/homeassistant/components/bmw_connected_drive/binary_sensor.py
@@ -38,10 +38,10 @@ ALLOWED_CONDITION_BASED_SERVICE_KEYS = {
     "VEHICLE_CHECK",
     "VEHICLE_TUV",
 }
-LOGGED_CONDITION_BASED_SERVICE_WARNINGS = set()
+LOGGED_CONDITION_BASED_SERVICE_WARNINGS: set[str] = set()
 
 ALLOWED_CHECK_CONTROL_MESSAGE_KEYS = {"ENGINE_OIL", "TIRE_PRESSURE"}
-LOGGED_CHECK_CONTROL_MESSAGE_WARNINGS = set()
+LOGGED_CHECK_CONTROL_MESSAGE_WARNINGS: set[str] = set()
 
 
 def _condition_based_services(
diff --git a/homeassistant/components/camera/img_util.py b/homeassistant/components/camera/img_util.py
index 87bc0e14fba..cfa8399c4d5 100644
--- a/homeassistant/components/camera/img_util.py
+++ b/homeassistant/components/camera/img_util.py
@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 import logging
-from typing import TYPE_CHECKING, cast
+from typing import TYPE_CHECKING, Literal, cast
 
 SUPPORTED_SCALING_FACTORS = [(7, 8), (3, 4), (5, 8), (1, 2), (3, 8), (1, 4), (1, 8)]
 
@@ -78,10 +78,10 @@ class TurboJPEGSingleton:
     seconds.
     """
 
-    __instance = None
+    __instance: TurboJPEG | Literal[False] | None = None
 
     @staticmethod
-    def instance() -> TurboJPEG:
+    def instance() -> TurboJPEG | Literal[False] | None:
         """Singleton for TurboJPEG."""
         if TurboJPEGSingleton.__instance is None:
             TurboJPEGSingleton()
diff --git a/homeassistant/components/fastdotcom/sensor.py b/homeassistant/components/fastdotcom/sensor.py
index 1df431d0bf3..4f00dd5a543 100644
--- a/homeassistant/components/fastdotcom/sensor.py
+++ b/homeassistant/components/fastdotcom/sensor.py
@@ -32,7 +32,6 @@ class SpeedtestSensor(RestoreEntity, SensorEntity):
     _attr_native_unit_of_measurement = UnitOfDataRate.MEGABITS_PER_SECOND
     _attr_icon = "mdi:speedometer"
     _attr_should_poll = False
-    _attr_native_value = None
 
     def __init__(self, speedtest_data: dict[str, Any]) -> None:
         """Initialize the sensor."""
diff --git a/homeassistant/components/logbook/queries/common.py b/homeassistant/components/logbook/queries/common.py
index 424a174b7af..ba26983dd24 100644
--- a/homeassistant/components/logbook/queries/common.py
+++ b/homeassistant/components/logbook/queries/common.py
@@ -1,6 +1,8 @@
 """Queries for logbook."""
 from __future__ import annotations
 
+from typing import Final
+
 import sqlalchemy
 from sqlalchemy import select
 from sqlalchemy.orm import Query
@@ -33,7 +35,7 @@ ALWAYS_CONTINUOUS_ENTITY_ID_LIKE = like_domain_matchers(ALWAYS_CONTINUOUS_DOMAIN
 UNIT_OF_MEASUREMENT_JSON = '"unit_of_measurement":'
 UNIT_OF_MEASUREMENT_JSON_LIKE = f"%{UNIT_OF_MEASUREMENT_JSON}%"
 
-PSUEDO_EVENT_STATE_CHANGED = None
+PSUEDO_EVENT_STATE_CHANGED: Final = None
 # Since we don't store event_types and None
 # and we don't store state_changed in events
 # we use a NULL for state_changed events
diff --git a/homeassistant/components/mqtt/config_flow.py b/homeassistant/components/mqtt/config_flow.py
index a9a78b32bd6..1af68cd5bac 100644
--- a/homeassistant/components/mqtt/config_flow.py
+++ b/homeassistant/components/mqtt/config_flow.py
@@ -159,7 +159,7 @@ class FlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
 
-    _hassio_discovery = None
+    _hassio_discovery: dict[str, Any] | None = None
 
     @staticmethod
     @callback
diff --git a/homeassistant/components/mqtt/sensor.py b/homeassistant/components/mqtt/sensor.py
index 656de35232b..33c1b9d9fb8 100644
--- a/homeassistant/components/mqtt/sensor.py
+++ b/homeassistant/components/mqtt/sensor.py
@@ -154,7 +154,7 @@ class MqttSensor(MqttEntity, RestoreSensor):
     """Representation of a sensor that can be updated using MQTT."""
 
     _entity_id_format = ENTITY_ID_FORMAT
-    _attr_last_reset = None
+    _attr_last_reset: datetime | None = None
     _attributes_extra_blocked = MQTT_SENSOR_ATTRIBUTES_BLOCKED
     _expire_after: int | None
     _expired: bool | None
diff --git a/homeassistant/components/netatmo/const.py b/homeassistant/components/netatmo/const.py
index 50578eb8223..3e489fe8ea5 100644
--- a/homeassistant/components/netatmo/const.py
+++ b/homeassistant/components/netatmo/const.py
@@ -63,7 +63,6 @@ DATA_PERSONS = "netatmo_persons"
 DATA_SCHEDULES = "netatmo_schedules"
 
 NETATMO_EVENT = "netatmo_event"
-NETATMO_WEBHOOK_URL = None
 
 DEFAULT_DISCOVERY = True
 DEFAULT_PERSON = "unknown"
diff --git a/homeassistant/components/stream/core.py b/homeassistant/components/stream/core.py
index 2ae4fc5b31c..a499d0cc114 100644
--- a/homeassistant/components/stream/core.py
+++ b/homeassistant/components/stream/core.py
@@ -374,7 +374,6 @@ class StreamView(HomeAssistantView):
     """
 
     requires_auth = False
-    platform = None
 
     async def get(
         self, request: web.Request, token: str, sequence: str = "", part_num: str = ""
diff --git a/homeassistant/components/switchbee/cover.py b/homeassistant/components/switchbee/cover.py
index a9eed00801a..ac0de3622f1 100644
--- a/homeassistant/components/switchbee/cover.py
+++ b/homeassistant/components/switchbee/cover.py
@@ -81,7 +81,7 @@ class SwitchBeeCoverEntity(SwitchBeeDeviceEntity[SwitchBeeShutter], CoverEntity)
         | CoverEntityFeature.SET_POSITION
         | CoverEntityFeature.STOP
     )
-    _attr_is_closed = None
+    _attr_is_closed: bool | None = None
 
     @callback
     def _handle_coordinator_update(self) -> None: