diff --git a/homeassistant/components/overkiz/entity.py b/homeassistant/components/overkiz/entity.py
index 0880440d393a4a..89472ef3d5188b 100644
--- a/homeassistant/components/overkiz/entity.py
+++ b/homeassistant/components/overkiz/entity.py
@@ -2,7 +2,7 @@
 
 from typing import cast
 
-from pyoverkiz.enums import OverkizAttribute, OverkizState
+from pyoverkiz.enums import APIType, OverkizAttribute, OverkizCommandParam, OverkizState
 from pyoverkiz.models import Device
 
 from homeassistant.helpers.device_registry import DeviceInfo
@@ -44,7 +44,20 @@ def __init__(
     @property
     def available(self) -> bool:
         """Return True if entity is available."""
-        return self.device.available and super().available
+        if self.device.available:
+            return super().available
+
+        # Workaround: local API may incorrectly report available=False (Somfy-TaHoma-Developer-Mode#217)
+        if self.coordinator.client.api_type != APIType.LOCAL:
+            return False
+
+        if status_state := self.device.states.get(OverkizState.CORE_STATUS):
+            return (
+                status_state.value == OverkizCommandParam.AVAILABLE
+                and super().available
+            )
+
+        return False
 
     @property
     def is_sub_device(self) -> bool: