diff --git a/setup/stock_location_children/odoo/addons/stock_location_children b/setup/stock_location_children/odoo/addons/stock_location_children
new file mode 120000
index 000000000..094bfef70
--- /dev/null
+++ b/setup/stock_location_children/odoo/addons/stock_location_children
@@ -0,0 +1 @@
+../../../../stock_location_children
\ No newline at end of file
diff --git a/setup/stock_location_children/setup.py b/setup/stock_location_children/setup.py
new file mode 100644
index 000000000..28c57bb64
--- /dev/null
+++ b/setup/stock_location_children/setup.py
@@ -0,0 +1,6 @@
+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)
diff --git a/stock_location_children/__init__.py b/stock_location_children/__init__.py
new file mode 100644
index 000000000..0650744f6
--- /dev/null
+++ b/stock_location_children/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/stock_location_children/__manifest__.py b/stock_location_children/__manifest__.py
new file mode 100644
index 000000000..614b259b3
--- /dev/null
+++ b/stock_location_children/__manifest__.py
@@ -0,0 +1,15 @@
+# Copyright 2020 Camptocamp SA
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+{
+    "name": "Stock location children",
+    "summary": "Add relation between stock location and all its children",
+    "version": "13.0.1.0.0",
+    "development_status": "Alpha",
+    "category": "Warehouse Management",
+    "website": "https://github.com/OCA/stock-logistics-warehouse",
+    "author": "Camptocamp, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "application": False,
+    "installable": True,
+    "depends": ["stock"],
+}
diff --git a/stock_location_children/models/__init__.py b/stock_location_children/models/__init__.py
new file mode 100644
index 000000000..88493e35d
--- /dev/null
+++ b/stock_location_children/models/__init__.py
@@ -0,0 +1 @@
+from . import stock_location
diff --git a/stock_location_children/models/stock_location.py b/stock_location_children/models/stock_location.py
new file mode 100644
index 000000000..efe3d14b1
--- /dev/null
+++ b/stock_location_children/models/stock_location.py
@@ -0,0 +1,45 @@
+# Copyright 2020 Camptocamp SA
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+from odoo import api, fields, models
+
+
+class StockLocation(models.Model):
+
+    _inherit = "stock.location"
+
+    children_ids = fields.Many2many(
+        "stock.location",
+        "stock_location_children_ids",
+        "parent_id",
+        "children_id",
+        compute="_compute_children_ids",
+        store=True,
+        help="All the children (multi-level) stock location of this location",
+    )
+
+    @api.depends("child_ids", "children_ids.child_ids")
+    def _compute_children_ids(self):
+        query = """SELECT sub.id, ARRAY_AGG(sl2.id) AS children
+            FROM stock_location sl2,
+            (
+            SELECT id, parent_path
+            FROM stock_location sl
+            ) sub
+            WHERE sl2.parent_path LIKE sub.parent_path || '%%'
+            AND sl2.id != sub.id
+            AND sub.id IN %s
+            GROUP BY sub.id;
+        """
+        self.flush(["location_id", "child_ids"])
+        self.env.cr.execute(query, (tuple(self.ids),))
+        rows = self.env.cr.dictfetchall()
+        for loc in self:
+            all_ids = []
+            for row in rows:
+                if row.get("id") == loc.id:
+                    all_ids = row.get("children")
+                    break
+            if all_ids:
+                loc.children_ids = [(6, 0, all_ids)]
+            else:
+                loc.children_ids = [(5, 0, 0)]
diff --git a/stock_location_children/readme/CONTRIBUTORS.rst b/stock_location_children/readme/CONTRIBUTORS.rst
new file mode 100644
index 000000000..e31e2f0c4
--- /dev/null
+++ b/stock_location_children/readme/CONTRIBUTORS.rst
@@ -0,0 +1 @@
+* Akim Juillerat <akim.juillerat@camptocamp.com>
diff --git a/stock_location_children/readme/DESCRIPTION.rst b/stock_location_children/readme/DESCRIPTION.rst
new file mode 100644
index 000000000..6dd2b549b
--- /dev/null
+++ b/stock_location_children/readme/DESCRIPTION.rst
@@ -0,0 +1,3 @@
+This module adds a `children_ids` field on `stock.location` in order to compute
+and store all the children for a `stock.location` and not only its first level
+children as is the case for `child_ids`.
diff --git a/stock_location_children/tests/__init__.py b/stock_location_children/tests/__init__.py
new file mode 100644
index 000000000..0bd71126f
--- /dev/null
+++ b/stock_location_children/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_stock_location_children
diff --git a/stock_location_children/tests/test_stock_location_children.py b/stock_location_children/tests/test_stock_location_children.py
new file mode 100644
index 000000000..773f64b8b
--- /dev/null
+++ b/stock_location_children/tests/test_stock_location_children.py
@@ -0,0 +1,70 @@
+# Copyright 2020 Camptocamp SA
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+from odoo.tests import SavepointCase
+
+
+class TestStockLocationChildren(SavepointCase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.env = cls.env(context=dict(cls.env.context, tracking_disable=True))
+        ref = cls.env.ref
+        cls.stock_input = ref("stock.stock_location_company")
+        cls.stock_location = ref("stock.stock_location_stock")
+        cls.test_location = cls.env["stock.location"].create(
+            {"name": "Test Location", "location_id": cls.stock_location.id}
+        )
+        cls.stock_shelf_1 = cls.env["stock.location"].create(
+            {"name": "Test Shelf 1", "location_id": cls.test_location.id}
+        )
+        cls.stock_shelf_2 = cls.env["stock.location"].create(
+            {"name": "Test Shelf 2", "location_id": cls.test_location.id}
+        )
+        cls.stock_shelf_2_refrigerator = cls.env["stock.location"].create(
+            {"name": "Test Shelf Refrigerator", "location_id": cls.stock_shelf_2.id}
+        )
+
+    def test_location_children(self):
+        self.assertFalse(self.stock_shelf_2_refrigerator.child_ids)
+        self.assertEqual(self.stock_shelf_2.child_ids, self.stock_shelf_2_refrigerator)
+        self.assertEqual(self.stock_shelf_2.child_ids, self.stock_shelf_2.children_ids)
+        self.assertFalse(self.stock_shelf_1.child_ids)
+        self.assertFalse(self.stock_shelf_1.children_ids)
+        self.assertEqual(
+            self.test_location.child_ids, self.stock_shelf_1 | self.stock_shelf_2
+        )
+        self.assertEqual(
+            self.test_location.children_ids,
+            self.stock_shelf_1 | self.stock_shelf_2 | self.stock_shelf_2_refrigerator,
+        )
+
+    def test_create_write_location(self):
+        refrigerator_drawer = self.env["stock.location"].create(
+            {
+                "name": "Refrigerator drawer",
+                "location_id": self.stock_shelf_2_refrigerator.id,
+            }
+        )
+        self.assertEqual(self.stock_shelf_2_refrigerator.child_ids, refrigerator_drawer)
+        self.assertEqual(
+            self.stock_shelf_2_refrigerator.children_ids, refrigerator_drawer
+        )
+        self.assertEqual(
+            self.stock_shelf_2.children_ids,
+            self.stock_shelf_2_refrigerator | refrigerator_drawer,
+        )
+        self.assertEqual(
+            self.test_location.children_ids,
+            self.stock_shelf_1
+            | self.stock_shelf_2
+            | self.stock_shelf_2_refrigerator
+            | refrigerator_drawer,
+        )
+        refrigerator_drawer.location_id = self.stock_input
+        self.assertFalse(self.stock_shelf_2_refrigerator.child_ids)
+        self.assertEqual(self.stock_shelf_2.child_ids, self.stock_shelf_2_refrigerator)
+        self.assertEqual(self.stock_shelf_2.child_ids, self.stock_shelf_2.children_ids)
+        self.assertEqual(
+            self.test_location.children_ids,
+            self.stock_shelf_1 | self.stock_shelf_2 | self.stock_shelf_2_refrigerator,
+        )