diff --git a/inv/models/object.py b/inv/models/object.py
index 9a6d52d823aced14d6eddb389c83af875d33f357..042c35f12212dfcee1d8c7f149b6ac8c83518079 100644
--- a/inv/models/object.py
+++ b/inv/models/object.py
@@ -236,6 +236,20 @@ class Object(Document):
             return self.container.get_path() + [self.id]
         return [self.id]
 
+    @property
+    def level(self) -> int:
+        """
+        Return level
+        :return:
+        """
+        if not self.container:
+            return 0
+        return len(self.get_path()) - 1  # self
+
+    @property
+    def has_children(self) -> bool:
+        return bool(Object.objects.filter(container=self.id))
+
     def get_nested_ids(self):
         """
         Return id of this and all nested object
diff --git a/sa/models/administrativedomain.py b/sa/models/administrativedomain.py
index 53cd0d9429a938d200d2066401d7c68343c3b26b..66dab6b3bc3562ee35104c7f11095b1f511337ee 100644
--- a/sa/models/administrativedomain.py
+++ b/sa/models/administrativedomain.py
@@ -186,6 +186,16 @@ class AdministrativeDomain(NOCModel):
             return self.parent.get_bioseg_floating_parent_segment()
         return None
 
+    @property
+    def level(self) -> int:
+        """
+        Return level
+        :return:
+        """
+        if not self.parent:
+            return 0
+        return len(self.get_path()) - 1  # self
+
     @classmethod
     def can_set_label(cls, label):
         return Label.get_effective_setting(label, setting="enable_administrativedomain")
diff --git a/services/ui/models/utils.py b/services/ui/models/utils.py
index d87edc5642ab64d2e591719d2596b1d38a448af9..6153fc9f80d387a12f6cc80716f212f8a407789e 100644
--- a/services/ui/models/utils.py
+++ b/services/ui/models/utils.py
@@ -20,6 +20,10 @@ class Reference(BaseModel):
 class LabelItem(BaseModel):
     id: str
     label: str
+    # For tree structure fields
+    parent: Optional[Reference]
+    level: Optional[int]
+    has_children: Optional[bool]
 
 
 class SummaryItem(BaseModel):
diff --git a/services/ui/paths/administrativedomain.py b/services/ui/paths/administrativedomain.py
index 99eb6541180e8b1fdac8d7fe24b792199d912337..7ddd9144e96c8720fd4a3f12da371b65e5c188bd 100644
--- a/services/ui/paths/administrativedomain.py
+++ b/services/ui/paths/administrativedomain.py
@@ -11,6 +11,7 @@ from fastapi import APIRouter
 # NOC modules
 from noc.sa.models.administrativedomain import AdministrativeDomain
 from noc.main.models.label import Label
+from ..models.utils import LabelItem
 from ..models.administrativedomain import (
     DefaultAdministrativeDomainItem,
     FormAdministrativeDomainItem,
@@ -33,6 +34,16 @@ class AdministrativeDomainAPI(ModelResourceAPI[AdministrativeDomain]):
     ]
     sort_fields = ["name", "id", ("parent", "parent__name")]
 
+    @classmethod
+    def item_to_label(cls, item: AdministrativeDomain) -> LabelItem:
+        return LabelItem(
+            id=str(item.id),
+            label=str(item.name),
+            parent=get_reference(item.parent),
+            level=item.level,
+            has_children=item.has_children,
+        )
+
     @classmethod
     def item_to_default(cls, item: AdministrativeDomain) -> DefaultAdministrativeDomainItem:
         return DefaultAdministrativeDomainItem(