diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index a640e3a52afba3..05d18f1e45b3f3 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -1553,19 +1553,20 @@ class ArmDisArmTrait(_Trait):
 
     state_to_service = {
         STATE_ALARM_ARMED_HOME: SERVICE_ALARM_ARM_HOME,
-        STATE_ALARM_ARMED_AWAY: SERVICE_ALARM_ARM_AWAY,
         STATE_ALARM_ARMED_NIGHT: SERVICE_ALARM_ARM_NIGHT,
+        STATE_ALARM_ARMED_AWAY: SERVICE_ALARM_ARM_AWAY,
         STATE_ALARM_ARMED_CUSTOM_BYPASS: SERVICE_ALARM_ARM_CUSTOM_BYPASS,
         STATE_ALARM_TRIGGERED: SERVICE_ALARM_TRIGGER,
     }
 
     state_to_support = {
         STATE_ALARM_ARMED_HOME: AlarmControlPanelEntityFeature.ARM_HOME,
-        STATE_ALARM_ARMED_AWAY: AlarmControlPanelEntityFeature.ARM_AWAY,
         STATE_ALARM_ARMED_NIGHT: AlarmControlPanelEntityFeature.ARM_NIGHT,
+        STATE_ALARM_ARMED_AWAY: AlarmControlPanelEntityFeature.ARM_AWAY,
         STATE_ALARM_ARMED_CUSTOM_BYPASS: AlarmControlPanelEntityFeature.ARM_CUSTOM_BYPASS,
         STATE_ALARM_TRIGGERED: AlarmControlPanelEntityFeature.TRIGGER,
     }
+    """The list of states to support in increasing security state."""
 
     @staticmethod
     def supported(domain, features, device_class, _):
@@ -1592,7 +1593,7 @@ def _default_arm_state(self):
         if STATE_ALARM_TRIGGERED in states:
             states.remove(STATE_ALARM_TRIGGERED)
 
-        if len(states) != 1:
+        if not states:
             raise SmartHomeError(ERR_NOT_SUPPORTED, "ArmLevel missing")
 
         return states[0]
@@ -1614,7 +1615,7 @@ def sync_attributes(self):
             }
             levels.append(level)
 
-        response["availableArmLevels"] = {"levels": levels, "ordered": False}
+        response["availableArmLevels"] = {"levels": levels, "ordered": True}
         return response
 
     def query_attributes(self):
@@ -1631,8 +1632,8 @@ def query_attributes(self):
     async def execute(self, command, data, params, challenge):
         """Execute an ArmDisarm command."""
         if params["arm"] and not params.get("cancel"):
-            # If no arm level given, we can only arm it if there is
-            # only one supported arm type. We never default to triggered.
+            # If no arm level given, we we arm the first supported
+            # level in state_to_support.
             if not (arm_level := params.get("armLevel")):
                 arm_level = self._default_arm_state()
 
diff --git a/tests/components/google_assistant/test_trait.py b/tests/components/google_assistant/test_trait.py
index 038b16d0cfcb92..63a34c01dacc0b 100644
--- a/tests/components/google_assistant/test_trait.py
+++ b/tests/components/google_assistant/test_trait.py
@@ -1763,7 +1763,7 @@ async def test_arm_disarm_arm_away(hass: HomeAssistant) -> None:
                     ],
                 },
             ],
-            "ordered": False,
+            "ordered": True,
         }
     }
 
@@ -1905,7 +1905,8 @@ async def test_arm_disarm_disarm(hass: HomeAssistant) -> None:
             {
                 alarm_control_panel.ATTR_CODE_ARM_REQUIRED: True,
                 ATTR_SUPPORTED_FEATURES: AlarmControlPanelEntityFeature.TRIGGER
-                | AlarmControlPanelEntityFeature.ARM_CUSTOM_BYPASS,
+                | AlarmControlPanelEntityFeature.ARM_HOME
+                | AlarmControlPanelEntityFeature.ARM_AWAY,
             },
         ),
         PIN_CONFIG,
@@ -1914,10 +1915,19 @@ async def test_arm_disarm_disarm(hass: HomeAssistant) -> None:
         "availableArmLevels": {
             "levels": [
                 {
-                    "level_name": "armed_custom_bypass",
+                    "level_name": "armed_home",
+                    "level_values": [
+                        {
+                            "level_synonym": ["armed home", "home"],
+                            "lang": "en",
+                        }
+                    ],
+                },
+                {
+                    "level_name": "armed_away",
                     "level_values": [
                         {
-                            "level_synonym": ["armed custom bypass", "custom"],
+                            "level_synonym": ["armed away", "away"],
                             "lang": "en",
                         }
                     ],
@@ -1927,12 +1937,12 @@ async def test_arm_disarm_disarm(hass: HomeAssistant) -> None:
                     "level_values": [{"level_synonym": ["triggered"], "lang": "en"}],
                 },
             ],
-            "ordered": False,
+            "ordered": True,
         }
     }
 
     assert trt.query_attributes() == {
-        "currentArmLevel": "armed_custom_bypass",
+        "currentArmLevel": "armed_home",
         "isArmed": False,
     }