diff --git a/cloudshell/networking/cisco/command_actions/add_remove_vlan_actions.py b/cloudshell/networking/cisco/command_actions/add_remove_vlan_actions.py
index 11d55af..3e1f6d2 100644
--- a/cloudshell/networking/cisco/command_actions/add_remove_vlan_actions.py
+++ b/cloudshell/networking/cisco/command_actions/add_remove_vlan_actions.py
@@ -90,12 +90,36 @@ def verify_interface_has_no_vlan_assigned(current_config):
         :return: True or False
         """
         success = True
-        if re.search(
+        vlan_match = re.search(
             r"switchport.*vlan",
             current_config,
             re.IGNORECASE,
-        ):
-            success = False
+        )
+        if vlan_match:
+            # Check if the only VLAN configured is VLAN 1 (default state)
+            # VLAN 1 is the default VLAN on Cisco switches and should be treated
+            # as "no VLANs assigned" for cleanup purposes
+            # Matches patterns like:
+            # - "switchport trunk allowed vlan 1"
+            # - "switchport access vlan 1"
+            # - "switchport mode access" + "switchport access vlan 1"
+            vlan_only_1 = re.search(
+                r"switchport\s+.*?vlan\s+1\s*$",
+                current_config,
+                re.MULTILINE | re.IGNORECASE,
+            )
+            # Also check for other VLAN configurations that would indicate
+            # non-default VLANs are present (VLANs other than 1, or VLAN ranges/lists)
+            other_vlans = re.search(
+                r"switchport.*vlan\s+(?!1\s*$)\d+|switchport.*vlan\s+1[,-]",
+                current_config,
+                re.IGNORECASE | re.MULTILINE,
+            )
+            # If only VLAN 1 is found and no other VLANs, consider it as "no VLANs"
+            if vlan_only_1 and not other_vlans:
+                success = True
+            else:
+                success = False
         return success
 
     def create_vlan(self, vlan_range, action_map=None, error_map=None):
diff --git a/tests/networking/cisco/command_actions/test_vlan_actions.py b/tests/networking/cisco/command_actions/test_vlan_actions.py
index fa7dd51..a468d4e 100644
--- a/tests/networking/cisco/command_actions/test_vlan_actions.py
+++ b/tests/networking/cisco/command_actions/test_vlan_actions.py
@@ -67,6 +67,104 @@ def test_verify_interface_has_any_vlan(self):
         """
         self.assertFalse(self._handler.verify_interface_configured(current_config))
 
+    def test_verify_interface_has_no_vlan_assigned_with_default_vlan_1_trunk(self):
+        """Test that VLAN 1 on trunk is considered as no VLANs assigned (default state)."""
+        current_config = """Building configuration...
+
+        Current configuration : 144 bytes
+        !
+        interface GigabitEthernet110/1/0/6
+         description KG-255X-06-PT
+         switchport
+         switchport trunk allowed vlan 1
+         switchport mode dynamic auto
+        end
+        """
+        # VLAN 1 is the default state, should be considered as "no VLANs assigned"
+        self.assertTrue(
+            self._handler.verify_interface_has_no_vlan_assigned(current_config)
+        )
+
+    def test_verify_interface_has_no_vlan_assigned_with_default_vlan_1_access(self):
+        """Test that VLAN 1 on access port is considered as no VLANs assigned (default state)."""
+        current_config = """Building configuration...
+
+        Current configuration : 100 bytes
+        !
+        interface GigabitEthernet1/0/4
+         switchport
+         switchport access vlan 1
+        end
+        """
+        # VLAN 1 is the default state, should be considered as "no VLANs assigned"
+        self.assertTrue(
+            self._handler.verify_interface_has_no_vlan_assigned(current_config)
+        )
+
+    def test_verify_interface_has_no_vlan_assigned_without_explicit_vlan(self):
+        """Test that interface without explicit VLAN config is considered as no VLANs assigned."""
+        current_config = """Building configuration...
+
+        Current configuration : 85 bytes
+        !
+        interface TenGigabitEthernet1/5/10
+         description SPIRENT Port 2/10
+         switchport
+        end
+        """
+        # No explicit VLAN, should be considered as "no VLANs assigned"
+        self.assertTrue(
+            self._handler.verify_interface_has_no_vlan_assigned(current_config)
+        )
+
+    def test_verify_interface_has_no_vlan_assigned_with_non_default_vlan(self):
+        """Test that non-default VLAN is detected as VLANs assigned."""
+        current_config = """Building configuration...
+
+        Current configuration : 100 bytes
+        !
+        interface GigabitEthernet1/0/1
+         switchport
+         switchport trunk allowed vlan 10
+        end
+        """
+        # VLAN 10 is not the default, should be considered as "VLANs assigned"
+        self.assertFalse(
+            self._handler.verify_interface_has_no_vlan_assigned(current_config)
+        )
+
+    def test_verify_interface_has_no_vlan_assigned_with_multiple_vlans(self):
+        """Test that multiple VLANs including VLAN 1 is detected as VLANs assigned."""
+        current_config = """Building configuration...
+
+        Current configuration : 110 bytes
+        !
+        interface GigabitEthernet1/0/2
+         switchport
+         switchport trunk allowed vlan 1,10,20
+        end
+        """
+        # Multiple VLANs, should be considered as "VLANs assigned"
+        self.assertFalse(
+            self._handler.verify_interface_has_no_vlan_assigned(current_config)
+        )
+
+    def test_verify_interface_has_no_vlan_assigned_with_vlan_range(self):
+        """Test that VLAN range is detected as VLANs assigned."""
+        current_config = """Building configuration...
+
+        Current configuration : 105 bytes
+        !
+        interface GigabitEthernet1/0/3
+         switchport
+         switchport trunk allowed vlan 10-20
+        end
+        """
+        # VLAN range, should be considered as "VLANs assigned"
+        self.assertFalse(
+            self._handler.verify_interface_has_no_vlan_assigned(current_config)
+        )
+
     @patch(
         "cloudshell.networking.cisco.command_actions.add_remove_vlan_actions"
         ".CommandTemplateExecutor"