diff --git a/ereuse_devicehub/resources/enums.py b/ereuse_devicehub/resources/enums.py
index 9e74217c..956ead04 100644
--- a/ereuse_devicehub/resources/enums.py
+++ b/ereuse_devicehub/resources/enums.py
@@ -368,3 +368,25 @@ class ErasureStandards(Enum):
                         and all(isinstance(step, actions.StepRandom) for step in other_steps):
                     standards.add(cls.HMG_IS5)
         return standards
+
+@unique
+class TransferState(Enum):
+    """State of transfer for a given Lot of devices.
+    """
+
+    """
+    * Initial: No transfer action in place.
+    * Initiated: The transfer action has been initiated by orginator.
+    * Accepted: The  transfer action has been accepted by destinator.
+
+    Devicehub specially raises user awareness when an action
+    has a Severity of ``Warning`` or greater.
+    """
+
+    Initial = 0
+    Initiated = 1
+    Accepted = 2
+    Completed = 3
+
+    def __str__(self):
+        return self.name
diff --git a/ereuse_devicehub/resources/lot/models.py b/ereuse_devicehub/resources/lot/models.py
index 7e86b949..2087ed2b 100644
--- a/ereuse_devicehub/resources/lot/models.py
+++ b/ereuse_devicehub/resources/lot/models.py
@@ -5,17 +5,18 @@ from typing import Union
 from boltons import urlutils
 from citext import CIText
 from flask import g
-from sqlalchemy import TEXT
+from sqlalchemy import TEXT, Enum as DBEnum
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy_utils import LtreeType
 from sqlalchemy_utils.types.ltree import LQUERY
-from teal.db import CASCADE_OWN, UUIDLtree, check_range
+from teal.db import CASCADE_OWN, UUIDLtree, check_range, IntEnum
 from teal.resource import url_for_resource
 
 from ereuse_devicehub.db import create_view, db, exp, f
 from ereuse_devicehub.resources.device.models import Component, Device
 from ereuse_devicehub.resources.models import Thing
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.resources.enums import TransferState
 
 
 class Lot(Thing):
@@ -67,6 +68,8 @@ class Lot(Thing):
                           nullable=False,
                           default=lambda: g.user.id)
     author = db.relationship(User, primaryjoin=author_id == User.id)
+    transfer_state = db.Column(IntEnum(TransferState), default=TransferState.Initial, nullable=False)
+    transfer_state.comment = TransferState.__doc__
 
     def __init__(self, name: str, closed: bool = closed.default.arg,
                  description: str = None) -> None:
diff --git a/ereuse_devicehub/resources/lot/models.pyi b/ereuse_devicehub/resources/lot/models.pyi
index 6101e9e9..4e410e58 100644
--- a/ereuse_devicehub/resources/lot/models.pyi
+++ b/ereuse_devicehub/resources/lot/models.pyi
@@ -26,6 +26,7 @@ class Lot(Thing):
     parents = ...  # type: relationship
     deposit = ... # type: Column
     author_id = ... # type: Column
+    transfer_state = ... # type: Column
 
     def __init__(self, name: str, closed: bool = closed.default.arg) -> None:
         super().__init__()
@@ -38,7 +39,8 @@ class Lot(Thing):
         self.all_devices = ...  # type: Set[Device]
         self.parents = ...  # type: Set[Lot]
         self.children = ...  # type: Set[Lot]
-        self.author_id = ... 
+        self.author_id = ... # type: UUID
+        self.transfer_state = ...
 
     def add_children(self, *children: Union[Lot, uuid.UUID]):
         pass
diff --git a/ereuse_devicehub/resources/lot/schemas.py b/ereuse_devicehub/resources/lot/schemas.py
index 6fd4f889..670a09a6 100644
--- a/ereuse_devicehub/resources/lot/schemas.py
+++ b/ereuse_devicehub/resources/lot/schemas.py
@@ -1,11 +1,12 @@
 from marshmallow import fields as f
-from teal.marshmallow import SanitizedStr, URL
+from teal.marshmallow import SanitizedStr, URL, EnumField
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.device import schemas as s_device
 from ereuse_devicehub.resources.lot import models as m
 from ereuse_devicehub.resources.models import STR_SIZE
 from ereuse_devicehub.resources.schemas import Thing
+from ereuse_devicehub.resources.enums import TransferState
 
 
 class Lot(Thing):
@@ -21,5 +22,5 @@ class Lot(Thing):
                        data_key='deposit',
                        description=m.Lot.deposit.__doc__)
     # author_id = NestedOn(s_user.User,only_query='author_id')
-    author_id = f.UUID(dump_only=True,
-                                data_key='author_id')
+    author_id = f.UUID(dump_only=True)
+    tranfer_state = EnumField(TransferState, description=m.Lot.transfer_state.comment)
\ No newline at end of file