diff --git a/homeassistant/components/deconz/scene.py b/homeassistant/components/deconz/scene.py
index 69f3d48c82c..3d8e1aa27ba 100644
--- a/homeassistant/components/deconz/scene.py
+++ b/homeassistant/components/deconz/scene.py
@@ -1,19 +1,34 @@
 """Support for deCONZ scenes."""
+
+from __future__ import annotations
+
+from collections.abc import ValuesView
 from typing import Any
 
+from pydeconz.group import DeconzScene as PydeconzScene
+
 from homeassistant.components.scene import Scene
-from homeassistant.core import callback
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
-from .gateway import get_gateway_from_config_entry
+from .gateway import DeconzGateway, get_gateway_from_config_entry
 
 
-async def async_setup_entry(hass, config_entry, async_add_entities):
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
     """Set up scenes for deCONZ component."""
     gateway = get_gateway_from_config_entry(hass, config_entry)
 
     @callback
-    def async_add_scene(scenes=gateway.api.scenes.values()):
+    def async_add_scene(
+        scenes: list[PydeconzScene]
+        | ValuesView[PydeconzScene] = gateway.api.scenes.values(),
+    ) -> None:
         """Add scene from deCONZ."""
         entities = [DeconzScene(scene, gateway) for scene in scenes]
 
@@ -34,14 +49,14 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
 class DeconzScene(Scene):
     """Representation of a deCONZ scene."""
 
-    def __init__(self, scene, gateway):
+    def __init__(self, scene: PydeconzScene, gateway: DeconzGateway) -> None:
         """Set up a scene."""
         self._scene = scene
         self.gateway = gateway
 
         self._attr_name = scene.full_name
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to sensors events."""
         self.gateway.deconz_ids[self.entity_id] = self._scene.deconz_id
 
diff --git a/homeassistant/components/deconz/services.py b/homeassistant/components/deconz/services.py
index 535dd9807fb..63252aa7787 100644
--- a/homeassistant/components/deconz/services.py
+++ b/homeassistant/components/deconz/services.py
@@ -1,9 +1,12 @@
 """deCONZ services."""
 
+from types import MappingProxyType
+
 from pydeconz.utils import normalize_bridge_id
 import voluptuous as vol
 
-from homeassistant.core import callback
+from homeassistant.components.deconz.gateway import DeconzGateway
+from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.helpers import (
     config_validation as cv,
     device_registry as dr,
@@ -55,10 +58,10 @@ SERVICE_TO_SCHEMA = {
 
 
 @callback
-def async_setup_services(hass):
+def async_setup_services(hass: HomeAssistant) -> None:
     """Set up services for deCONZ integration."""
 
-    async def async_call_deconz_service(service_call):
+    async def async_call_deconz_service(service_call: ServiceCall) -> None:
         """Call correct deCONZ service."""
         service = service_call.service
         service_data = service_call.data
@@ -97,13 +100,15 @@ def async_setup_services(hass):
 
 
 @callback
-def async_unload_services(hass):
+def async_unload_services(hass: HomeAssistant) -> None:
     """Unload deCONZ services."""
     for service in SUPPORTED_SERVICES:
         hass.services.async_remove(DOMAIN, service)
 
 
-async def async_configure_service(gateway, data):
+async def async_configure_service(
+    gateway: DeconzGateway, data: MappingProxyType
+) -> None:
     """Set attribute of device in deCONZ.
 
     Entity is used to resolve to a device path (e.g. '/lights/1').
@@ -133,7 +138,7 @@ async def async_configure_service(gateway, data):
     await gateway.api.request("put", field, json=data)
 
 
-async def async_refresh_devices_service(gateway):
+async def async_refresh_devices_service(gateway: DeconzGateway) -> None:
     """Refresh available devices from deCONZ."""
     gateway.ignore_state_updates = True
     await gateway.api.refresh_state()
@@ -143,7 +148,7 @@ async def async_refresh_devices_service(gateway):
         gateway.async_add_device_callback(resource_type, force=True)
 
 
-async def async_remove_orphaned_entries_service(gateway):
+async def async_remove_orphaned_entries_service(gateway: DeconzGateway) -> None:
     """Remove orphaned deCONZ entries from device and entity registries."""
     device_registry = dr.async_get(gateway.hass)
     entity_registry = er.async_get(gateway.hass)
@@ -164,14 +169,14 @@ async def async_remove_orphaned_entries_service(gateway):
         connections={(CONNECTION_NETWORK_MAC, gateway.api.config.mac)},
         identifiers=set(),
     )
-    if gateway_host.id in devices_to_be_removed:
+    if gateway_host and gateway_host.id in devices_to_be_removed:
         devices_to_be_removed.remove(gateway_host.id)
 
     # Don't remove the Gateway service entry
     gateway_service = device_registry.async_get_device(
         identifiers={(DOMAIN, gateway.api.config.bridge_id)}, connections=set()
     )
-    if gateway_service.id in devices_to_be_removed:
+    if gateway_service and gateway_service.id in devices_to_be_removed:
         devices_to_be_removed.remove(gateway_service.id)
 
     # Don't remove devices belonging to available events