diff --git a/homeassistant/components/homekit_controller/__init__.py b/homeassistant/components/homekit_controller/__init__.py
index 54da6e71c8c..aa56bbbda78 100644
--- a/homeassistant/components/homekit_controller/__init__.py
+++ b/homeassistant/components/homekit_controller/__init__.py
@@ -21,7 +21,7 @@ from homeassistant.helpers.typing import ConfigType
 
 from .config_flow import normalize_hkid
 from .connection import HKDevice
-from .const import KNOWN_DEVICES, TRIGGERS
+from .const import KNOWN_DEVICES
 from .utils import async_get_controller
 
 _LOGGER = logging.getLogger(__name__)
@@ -59,7 +59,6 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     await async_get_controller(hass)
 
     hass.data[KNOWN_DEVICES] = {}
-    hass.data[TRIGGERS] = {}
 
     async def _async_stop_homekit_controller(event: Event) -> None:
         await asyncio.gather(
diff --git a/homeassistant/components/homekit_controller/device_trigger.py b/homeassistant/components/homekit_controller/device_trigger.py
index bc1434f4bd9..229c8aecc00 100644
--- a/homeassistant/components/homekit_controller/device_trigger.py
+++ b/homeassistant/components/homekit_controller/device_trigger.py
@@ -224,7 +224,7 @@ async def async_setup_triggers_for_entry(
         # They have to be different accessories (they can be on the same bridge)
         # In practice, this is inline with what iOS actually supports AFAWCT.
         device_id = conn.devices[aid]
-        if device_id in hass.data[TRIGGERS]:
+        if TRIGGERS in hass.data and device_id in hass.data[TRIGGERS]:
             return False
 
         # Just because we recognize the service type doesn't mean we can actually
@@ -246,15 +246,18 @@ def async_get_or_create_trigger_source(
     hass: HomeAssistant, device_id: str
 ) -> TriggerSource:
     """Get or create a trigger source for a device id."""
-    if not (source := hass.data[TRIGGERS].get(device_id)):
+    trigger_sources: dict[str, TriggerSource] = hass.data.setdefault(TRIGGERS, {})
+    if not (source := trigger_sources.get(device_id)):
         source = TriggerSource(hass)
-        hass.data[TRIGGERS][device_id] = source
+        trigger_sources[device_id] = source
     return source
 
 
 def async_fire_triggers(conn: HKDevice, events: dict[tuple[int, int], dict[str, Any]]):
     """Process events generated by a HomeKit accessory into automation triggers."""
-    trigger_sources: dict[str, TriggerSource] = conn.hass.data[TRIGGERS]
+    trigger_sources: dict[str, TriggerSource] = conn.hass.data.get(TRIGGERS, {})
+    if not trigger_sources:
+        return
     for (aid, iid), ev in events.items():
         if aid in conn.devices:
             device_id = conn.devices[aid]