diff --git a/.gitignore b/.gitignore
index 6f064674a33..31582eed5f6 100755
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,5 @@ install/win32/meta.py
 /man/
 /share/
 /src/
+# Ignore Markdown files
+*.md
diff --git a/README.md b/README.md
deleted file mode 100644
index 29e1a840775..00000000000
--- a/README.md
+++ /dev/null
@@ -1,4 +0,0 @@
-# Odoo 16.0 - Technical Training
-
-The Technical Training of Odoo 16.0 is available on the
-[Tutorial](https://www.odoo.com/documentation/master/developer/howtos/rdtraining.html)
diff --git a/estate/__manifest__.py b/estate/__manifest__.py
index d7cfa57d4c5..d03bcb8ecf5 100644
--- a/estate/__manifest__.py
+++ b/estate/__manifest__.py
@@ -1,11 +1,25 @@
 {
-    "name": "Estate",  # The name that will appear in the App list
-    "version": "16.0.0",  # Version
-    "application": True,  # This line says the module is an App, and not a module
-    "depends": ["base"],  # dependencies
+    "name": "Estate",
+    "version": "18.0.1.0.0",
+    "application": True,
+    "depends": ["base"],
     "data": [
+        # Security files first
+        "security/ir.model.access.csv",
 
+        # Data files in dependency order
+        # "data/estate_property_type_data.xml",  # Base data first
+        # "data/estate_property_tag_data.xml",   # Independent data
+        # "data/estate_property_offer_data.xml", # Depends on property types
+
+        # Views and menus last
+        "views/estate_property_views.xml",
+        "views/estate_property_offer_views.xml",
+        "views/estate_property_type_views.xml",
+        "views/estate_property_tag_views.xml",
+        "views/res_users_views.xml",
+        "views/estate_menus.xml",
     ],
     "installable": True,
-    'license': 'LGPL-3',
+    "license": "LGPL-3",
 }
diff --git a/estate/models.py b/estate/models.py
deleted file mode 100644
index e69de29bb2d..00000000000
diff --git a/estate/models/__init__.py b/estate/models/__init__.py
new file mode 100644
index 00000000000..9a2189b6382
--- /dev/null
+++ b/estate/models/__init__.py
@@ -0,0 +1,5 @@
+from . import estate_property
+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer
+from . import res_users
diff --git a/estate/models/estate_property.py b/estate/models/estate_property.py
new file mode 100644
index 00000000000..e9916b16073
--- /dev/null
+++ b/estate/models/estate_property.py
@@ -0,0 +1,180 @@
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare, float_is_zero
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Estate Property"
+    _order = "id desc"
+    
+    # Basic fields
+    name = fields.Char(string="Title", required=True)
+    description = fields.Text(string="Description")
+    postcode = fields.Char(string="Postcode")
+    date_availability = fields.Date(
+        string="Available From",
+        copy=False,
+        default=lambda self: fields.Date.add(fields.Date.today(), months=3),
+    )
+    expected_price = fields.Float(string="Expected Price", required=True)
+    selling_price = fields.Float(string="Selling Price", readonly=True, copy=False)
+    bedrooms = fields.Integer(string="Bedrooms", default=2)
+    living_area = fields.Integer(string="Living Area (sqm)")
+    facades = fields.Integer(string="Facades")
+    garage = fields.Boolean(string="Garage")
+    garden = fields.Boolean(string="Garden")
+    garden_area = fields.Integer(string="Garden Area (sqm)")
+    garden_orientation = fields.Selection(
+        selection=[
+            ('north', 'North'),
+            ('south', 'South'),
+            ('east', 'East'),
+            ('west', 'West')
+        ],
+        string="Garden Orientation"
+    )
+
+    # Reserved/common fields
+    active = fields.Boolean(string="Active", default=True)
+    state = fields.Selection(
+        selection=[
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("cancelled", "Cancelled"),
+        ],
+        string="Status",
+        required=True,
+        copy=False,
+        default="new",
+    )
+
+    # Relations
+    property_type_id = fields.Many2one(
+        comodel_name="estate.property.type",
+        string="Property Type",
+    )
+
+    # Parties
+    salesman_id = fields.Many2one(
+        comodel_name="res.users",
+        string="Salesman",
+        default=lambda self: self.env.user,
+    )
+    buyer_id = fields.Many2one(
+        comodel_name="res.partner",
+        string="Buyer",
+        copy=False,
+    )
+
+    tag_ids = fields.Many2many(
+        comodel_name="estate.property.tag",
+        string="Tags",
+    )
+
+    offer_ids = fields.One2many(
+        comodel_name="estate.property.offer",
+        inverse_name="property_id",
+        string="Offers",
+    )
+
+    # SQL constraints
+    _sql_constraints = [
+        (
+            "expected_price_strictly_positive",
+            "CHECK(expected_price > 0)",
+            "The expected price must be strictly positive.",
+        ),
+        (
+            "selling_price_positive",
+            "CHECK(selling_price >= 0)",
+            "The selling price must be positive.",
+        ),
+    ]
+
+    # Computed fields
+    total_area = fields.Integer(
+        string="Total Area (sqm)",
+        compute="_compute_total_area",
+        store=False,
+    )
+    best_price = fields.Float(
+        string="Best Offer",
+        compute="_compute_best_price",
+        store=False,
+    )
+
+    @api.depends("living_area", "garden_area")
+    def _compute_total_area(self) -> None:
+        for property in self:
+            living = property.living_area or 0
+            garden = property.garden_area or 0
+            property.total_area = living + garden
+
+    @api.depends("offer_ids.price")
+    def _compute_best_price(self) -> None:
+        for property in self:
+            prices = property.offer_ids.mapped("price")
+            property.best_price = max(prices) if prices else 0.0
+
+    @api.onchange("garden")
+    def _onchange_garden(self) -> None:
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = 0
+            self.garden_orientation = False
+
+    # CRUD methods (ORM overrides)
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_allowed(self):
+        for property in self:
+            if property.state not in ("new", "cancelled"):
+                raise UserError("You can only delete properties in New or Cancelled state. Consider archiving instead.")
+        # clean up children explicitly to avoid FK issues
+        self.mapped("offer_ids").unlink()
+
+    # Python-level validation for clearer errors in the UI
+    @api.constrains("expected_price")
+    def _check_expected_price_positive(self):
+        for property in self:
+            if property.expected_price is not None and property.expected_price <= 0:
+                raise ValidationError("The expected price must be strictly positive.")
+
+    @api.constrains("selling_price")
+    def _check_selling_price_non_negative(self):
+        for property in self:
+            if property.selling_price is not None and property.selling_price < 0:
+                raise ValidationError("The selling price must be positive.")
+
+    @api.constrains("selling_price", "expected_price")
+    def _check_selling_price_threshold(self):
+        precision = 2
+        for property in self:
+            # Skip if no selling price yet
+            if property.selling_price is None or float_is_zero(property.selling_price, precision_digits=precision):
+                continue
+            # Require a valid expected price to compare against
+            if property.expected_price is None or not float_compare(property.expected_price, 0.0, precision_digits=precision) == 1:
+                # expected price not set/invalid; other constraints will catch it
+                continue
+            min_allowed = property.expected_price * 0.9
+            if float_compare(property.selling_price, min_allowed, precision_digits=precision) == -1:
+                raise ValidationError("The selling price cannot be lower than 90% of the expected price.")
+
+    # Action methods
+    def action_cancel(self):
+        self.ensure_one()
+        if self.state == "sold":
+            raise UserError("A sold property cannot be cancelled.")
+        self.state = "cancelled"
+        return True
+
+    def action_set_sold(self):
+        self.ensure_one()
+        if self.state == "cancelled":
+            raise UserError("A cancelled property cannot be sold.")
+        self.state = "sold"
+        return True
\ No newline at end of file
diff --git a/estate/models/estate_property_offer.py b/estate/models/estate_property_offer.py
new file mode 100644
index 00000000000..132bf6a3a18
--- /dev/null
+++ b/estate/models/estate_property_offer.py
@@ -0,0 +1,112 @@
+from odoo import models, fields, api
+from odoo.exceptions import UserError
+from datetime import date, timedelta
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+    _order = "price desc"
+
+    price = fields.Float(string="Price")
+    status = fields.Selection(
+        selection=[("accepted", "Accepted"), ("refused", "Refused")],
+        string="Status",
+        copy=False,
+    )
+    partner_id = fields.Many2one("res.partner", string="Partner", required=True)
+    property_id = fields.Many2one(
+        "estate.property",
+        string="Property",
+        required=True,
+        ondelete="cascade",
+    )
+    property_type_id = fields.Many2one(
+        comodel_name="estate.property.type",
+        string="Property Type",
+        related="property_id.property_type_id",
+        store=True,
+    )
+
+    validity = fields.Integer(string="Validity (days)", default=7)
+    date_deadline = fields.Date(string="Deadline", compute="_compute_date_deadline", inverse="_inverse_date_deadline", store=False)
+
+    @api.depends("validity", "create_date")
+    def _compute_date_deadline(self) -> None:
+        for offer in self:
+            created = (offer.create_date or fields.Datetime.now())
+            base_date = created.date()
+            offer.date_deadline = base_date + timedelta(days=offer.validity or 0)
+
+    def _inverse_date_deadline(self) -> None:
+        for offer in self:
+            created = (offer.create_date or fields.Datetime.now())
+            base_date = created.date()
+            if offer.date_deadline:
+                delta = offer.date_deadline - base_date
+                offer.validity = max(delta.days, 0)
+
+    # Make the form reactive while editing (no need to wait for save)
+    @api.onchange("validity")
+    def _onchange_validity(self):
+        for offer in self:
+            created = (offer.create_date or fields.Datetime.now())
+            base_date = created.date()
+            offer.date_deadline = base_date + timedelta(days=offer.validity or 0)
+
+    @api.onchange("date_deadline")
+    def _onchange_date_deadline(self):
+        for offer in self:
+            if offer.date_deadline:
+                created = (offer.create_date or fields.Datetime.now())
+                base_date = created.date()
+                delta = offer.date_deadline - base_date
+                offer.validity = max(delta.days, 0)
+
+    # Actions on offers
+    def action_accept(self):
+        for offer in self:
+            if offer.property_id.state == "sold":
+                raise UserError("Cannot accept an offer on a sold property.")
+            # set other offers to refused
+            siblings = offer.property_id.offer_ids - offer
+            siblings.write({"status": "refused"})
+            offer.status = "accepted"
+            offer.property_id.write({
+                "buyer_id": offer.partner_id.id,
+                "selling_price": offer.price,
+                "state": "offer_accepted",
+            })
+        return True
+
+    def action_refuse(self):
+        self.status = "refused"
+        return True
+
+    # SQL constraints
+    _sql_constraints = [
+        (
+            "offer_price_strictly_positive",
+            "CHECK(price > 0)",
+            "The offer price must be strictly positive.",
+        ),
+    ]
+
+    # When an offer is created, mark the property as having an offer
+    @api.model_create_multi
+    def create(self, vals_list):
+        # Business rule: price must be strictly higher than any existing offer on the property
+        props = self.env["estate.property"]
+        for vals in vals_list:
+            property_id = vals.get("property_id")
+            if property_id:
+                prop = self.env["estate.property"].browse(property_id)
+                props |= prop
+                existing_max = max(prop.offer_ids.mapped("price") or [0.0])
+                if vals.get("price") is not None and vals["price"] <= existing_max:
+                    raise UserError("Offer must be higher than all existing offers for this property.")
+
+        records = super().create(vals_list)
+        # Set property state to Offer Received for affected properties
+        props.filtered(lambda p: p.state == "new").state = "offer_received"
+        return records
diff --git a/estate/models/estate_property_tag.py b/estate/models/estate_property_tag.py
new file mode 100644
index 00000000000..bcfb0e275ff
--- /dev/null
+++ b/estate/models/estate_property_tag.py
@@ -0,0 +1,14 @@
+from odoo import models, fields
+
+
+class EstatePropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Estate Property Tag"
+    _order = "name"
+
+    name = fields.Char(string="Name", required=True)
+    color = fields.Integer(string="Color")
+
+    _sql_constraints = [
+        ("estate_property_tag_name_uniq", "unique(name)", "Property tag name must be unique."),
+    ]
diff --git a/estate/models/estate_property_type.py b/estate/models/estate_property_type.py
new file mode 100644
index 00000000000..305303e2089
--- /dev/null
+++ b/estate/models/estate_property_type.py
@@ -0,0 +1,33 @@
+from odoo import models, fields
+
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Estate Property Type"
+    _order = "sequence, name"
+
+    name = fields.Char(string="Name", required=True)
+    sequence = fields.Integer(string="Sequence", default=10)
+
+    _sql_constraints = [
+        ("estate_property_type_name_uniq", "unique(name)", "Property type name must be unique."),
+    ]
+    
+    # Inline list: related properties
+    property_ids = fields.One2many(
+        comodel_name="estate.property",
+        inverse_name="property_type_id",
+        string="Properties",
+    )
+
+    offer_ids = fields.One2many(
+        comodel_name="estate.property.offer",
+        inverse_name="property_type_id",
+        string="Offers",
+    )
+    offer_count = fields.Integer(string="Offers", compute="_compute_offer_count")
+
+    def _compute_offer_count(self):
+        for rec in self:
+            rec.offer_count = len(rec.offer_ids)
+    
diff --git a/estate/models/res_users.py b/estate/models/res_users.py
new file mode 100644
index 00000000000..6d58b009f61
--- /dev/null
+++ b/estate/models/res_users.py
@@ -0,0 +1,16 @@
+from odoo import models, fields
+
+
+class ResUsers(models.Model):
+    _inherit = "res.users"
+
+    # Properties assigned to the salesperson (this user)
+    # Only show available properties (New or Offer Received)
+    property_ids = fields.One2many(
+        comodel_name="estate.property",
+        inverse_name="salesman_id",
+        string="Properties",
+        domain=[("state", "in", ("new", "offer_received"))],
+    )
+
+
diff --git a/estate/security/ir.model.access.csv b/estate/security/ir.model.access.csv
new file mode 100644
index 00000000000..89f97c50842
--- /dev/null
+++ b/estate/security/ir.model.access.csv
@@ -0,0 +1,5 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_estate_property,access_estate_property,model_estate_property,base.group_user,1,1,1,1
+access_estate_property_type,access_estate_property_type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag,access_estate_property_tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer,access_estate_property_offer,model_estate_property_offer,base.group_user,1,1,1,1
diff --git a/estate/views/estate_menus.xml b/estate/views/estate_menus.xml
new file mode 100644
index 00000000000..ce072ba5daf
--- /dev/null
+++ b/estate/views/estate_menus.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <!-- Root menu shown in the app switcher -->
+    <menuitem id="estate_menu_root" name="Real Estate" sequence="10"/>
+
+    <!-- First level menu in the top bar under Real Estate -->
+    <menuitem id="estate_menu_advertisements" name="Advertisements" parent="estate_menu_root" sequence="10"/>
+
+    <!-- Action menu linking to the window action created earlier -->
+    <menuitem id="estate_menu_properties" parent="estate_menu_advertisements" action="estate_property_action" sequence="10"/>
+
+    <!-- Settings menu and child menu for property types -->
+    <menuitem id="estate_menu_settings" name="Settings" parent="estate_menu_root" sequence="20"/>
+    <menuitem id="estate_menu_property_types" name="Property Types" parent="estate_menu_settings" action="estate_property_type_action" sequence="10"/>
+    <menuitem id="estate_menu_property_tags" name="Property Tags" parent="estate_menu_settings" action="estate_property_tag_action" sequence="20"/>
+</odoo>
diff --git a/estate/views/estate_property_offer_views.xml b/estate/views/estate_property_offer_views.xml
new file mode 100644
index 00000000000..8f1236f8fda
--- /dev/null
+++ b/estate/views/estate_property_offer_views.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="estate_property_offer_list_view" model="ir.ui.view">
+        <field name="name">estate.property.offer.list</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list string="Offers" editable="bottom" decoration-danger="status == 'refused'" decoration-success="status == 'accepted'">
+                <field name="price"/>
+                <field name="partner_id"/>
+                <field name="status" invisible="1"/>
+                <field name="property_type_id"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Offers</field>
+        <field name="res_model">estate.property.offer</field>
+        <field name="view_mode">list,form</field>
+        <field name="domain">[("property_type_id", "=", active_id)]</field>
+    </record>
+
+    <record id="estate_property_offer_form_view" model="ir.ui.view">
+        <field name="name">estate.property.offer.form</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form string="Offers">
+                <sheet>
+                    <header>
+                        <button name="action_accept" type="object" string="Accept" icon="fa-check" class="btn-primary" invisible="status == 'accepted'"/>
+                        <button name="action_refuse" type="object" string="Refuse" icon="fa-times" class="btn-secondary" invisible="status == 'refused'"/>
+                    </header>
+                    <group>
+                        <field name="price"/>
+                        <field name="partner_id"/>
+                        <field name="status"/>
+                        <field name="property_type_id"/>
+                        <field name="property_id"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+</odoo>
diff --git a/estate/views/estate_property_tag_views.xml b/estate/views/estate_property_tag_views.xml
new file mode 100644
index 00000000000..61bb371530f
--- /dev/null
+++ b/estate/views/estate_property_tag_views.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="estate_property_tag_list_view" model="ir.ui.view">
+        <field name="name">estate.property.tag.list</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list string="Property Tags" editable="bottom">
+                <field name="name"/>
+                <field name="color"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_form_view" model="ir.ui.view">
+        <field name="name">estate.property.tag.form</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form string="Property Tags">
+                <sheet>
+                    <div class="oe_title">
+                        <label for="name" class="oe_edit_only"/>
+                        <h1>
+                            <field name="name"/>
+                        </h1>
+                    </div>
+                    <group>
+                        <field name="color"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_action" model="ir.actions.act_window">
+        <field name="name">Property Tags</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>
diff --git a/estate/views/estate_property_type_views.xml b/estate/views/estate_property_type_views.xml
new file mode 100644
index 00000000000..e8900a9e2bc
--- /dev/null
+++ b/estate/views/estate_property_type_views.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="estate_property_type_list_view" model="ir.ui.view">
+        <field name="name">estate.property.type.list</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <list string="Property Types" create="true" edit="true">
+                <field name="sequence" widget="handle"/>
+                <field name="name"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_type_form_view" model="ir.ui.view">
+        <field name="name">estate.property.type.form</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <form string="Property Types">
+                <sheet>
+                    <header>
+                        <button name="%(estate.estate_property_offer_action)d" type="action" class="oe_stat_button" icon="fa-list" string="Offers" context="{'search_default_property_type_id': id}"/>
+                        <field name="offer_count" widget="statinfo" string="Offers"/>
+                    </header>
+                    
+                    <div class="oe_title">
+                        <label for="name" class="oe_edit_only"/>
+                        <h1>
+                            <field name="name"/>
+                        </h1>
+                    </div>
+                    <notebook>
+                        <page string="Properties">
+                            <field name="property_ids">
+                                <list decoration-success="state == 'offer_received'" decoration-bf="state == 'offer_accepted'" decoration-muted="state == 'sold'">
+                                    <field name="name"/>
+                                    <field name="expected_price"/>
+                                    <field name="state"/>
+                                </list>
+                            </field>
+                        </page>
+                    </notebook>
+                    
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_type_action" model="ir.actions.act_window">
+        <field name="name">Property Types</field>
+        <field name="res_model">estate.property.type</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>
diff --git a/estate/views/estate_property_views.xml b/estate/views/estate_property_views.xml
new file mode 100644
index 00000000000..9d18d3521f1
--- /dev/null
+++ b/estate/views/estate_property_views.xml
@@ -0,0 +1,191 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <!-- List (tree) view for estate.property -->
+    <record id="estate_property_list_view" model="ir.ui.view">
+        <field name="name">estate.property.list</field>
+        <field name="model">estate.property</field>
+        <field name="priority">1</field>
+        <field name="arch" type="xml">
+            <list string="Properties" decoration-success="state in ['offer_received','offer_accepted']" decoration-bf="state == 'offer_accepted'" decoration-muted="state == 'sold'">
+                <field name="name"/>
+                <field name="property_type_id" string="Property Type"/>
+                <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                <field name="postcode"/>
+                <field name="bedrooms"/>
+                <field name="living_area"/>
+                <field name="expected_price"/>
+                <field name="selling_price"/>
+                <field name="date_availability" optional="hide"/>
+                <!-- state must be present for decorations but kept invisible in list if desired -->
+                <field name="state" invisible="1"/>
+            </list>
+        </field>
+    </record>
+
+    <!-- Minimal Kanban view for estate.property -->
+    <record id="estate_property_kanban_view" model="ir.ui.view">
+        <field name="name">estate.property.kanban</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <kanban default_group_by="property_type_id" records_draggable="false">
+                <!-- Fields needed for conditions/values but not directly displayed -->
+                <field name="state"/>
+                <field name="expected_price"/>
+                <field name="best_price"/>
+                <field name="selling_price"/>
+                <field name="tag_ids"/>
+                <templates>
+                    <t t-name="kanban-box">
+                        <div class="o_kanban_record">
+                            <strong><field name="name"/></strong>
+                            <div>
+                                <span>Expected Price: </span>
+                                <field name="expected_price"/>
+                            </div>
+                            <div t-if="record.state.raw_value == 'offer_received'">
+                                <span>Best Offer: </span>
+                                <field name="best_price"/>
+                            </div>
+                            <div t-if="record.state.raw_value == 'offer_accepted'">
+                                <span>Selling Price: </span>
+                                <field name="selling_price"/>
+                            </div>
+                            <div>
+                                <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                            </div>
+                        </div>
+                    </t>
+                </templates>
+            </kanban>
+        </field>
+    </record>
+
+    <!-- Form view for estate.property -->
+    <record id="estate_property_form_view" model="ir.ui.view">
+        <field name="name">estate.property.form</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <form string="Properties">
+                <sheet>
+                    <header>
+                        <button name="action_set_sold" type="object" string="Sold" icon="fa-check" class="btn-primary" invisible="state in ['cancelled','sold']"/>
+                        <button name="action_cancel" type="object" string="Cancel" icon="fa-times" class="btn-secondary" invisible="state in ['cancelled','sold']"/>
+                        <field name="state" widget="statusbar" statusbar_visible="new,offer_received,offer_accepted,sold,cancelled"/>
+                    </header>
+                    <div class="oe_title">
+                        <label for="name" class="oe_edit_only"/>
+                        <h1>
+                            <field name="name"/>
+                        </h1>
+                    </div>
+                    <group>
+                        <group>
+                            <field name="postcode"/>
+                            <field name="date_availability" string="Available From"/>
+                        </group>
+                        <group>
+                            <field name="expected_price"/>
+                            <field name="selling_price"/>
+                        </group>
+                    </group>
+                    <group>
+                        <field name="property_type_id" options="{'no_create': True, 'no_create_edit': True}"/>
+                        <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                    </group>
+                    <group>
+                        <group>
+                            <field name="total_area"/>
+                        </group>
+                        <group>
+                            <field name="best_price"/>
+                        </group>
+                    </group>
+                    <notebook>
+                        <page string="Description">
+                            <field name="description"/>
+                        </page>
+                        <page string="Offers">
+                            <field name="offer_ids" context="{'default_property_id': id}" readonly="state in ['offer_accepted','sold','cancelled']">
+                                <list editable="bottom" decoration-danger="status == 'refused'" decoration-success="status == 'accepted'">
+                                    <field name="price"/>
+                                    <field name="partner_id"/>
+                                    <field name="status" column_invisible="1"/>
+                                    <field name="validity"/>
+                                    <field name="date_deadline"/>
+                                    <button name="action_accept" type="object" icon="fa-check" title="Accept" class="btn-link text-success" invisible="status in ['accepted','refused']"/>
+                                    <button name="action_refuse" type="object" icon="fa-times" title="Refuse" class="btn-link text-danger" invisible="status in ['accepted','refused']"/>
+                                </list>
+                                <form string="Offer">
+                                    <group>
+                                        <field name="price"/>
+                                        <field name="partner_id"/>
+                                        <field name="status"/>
+                                        <field name="validity"/>
+                                        <field name="date_deadline"/>
+                                    </group>
+                                </form>
+                            </field>
+                        </page>
+                        <page string="Other Info">
+                            <group>
+                                <field name="salesman_id"/>
+                                <field name="buyer_id"/>
+                            </group>
+                        </page>
+                    </notebook>
+                    <group>
+                        <group>
+                            <field name="bedrooms"/>
+                            <field name="living_area" string="Living Area (sqm)"/>
+                            <field name="facades"/>
+                            <field name="garage"/>
+                            <field name="garden"/>
+                            <field name="garden_area" string="Garden Area (sqm)" invisible="not garden"/>
+                            <field name="garden_orientation" invisible="not garden"/>
+                        </group>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <!-- Search view for estate.property -->
+    <record id="estate_property_search_view" model="ir.ui.view">
+        <field name="name">estate.property.search</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <search string="Properties">
+                <!-- Quick search fields -->
+                <field name="name" string="Title"/>
+                <field name="property_type_id"/>
+                <field name="postcode"/>
+                <field name="expected_price"/>
+                <field name="bedrooms"/>
+                <field name="living_area" string="Living Area (sqm)" filter_domain="[('living_area','>=',self)]"/>
+                <field name="facades"/>
+
+                <!-- Filters -->
+                <filter name="available" string="Available" domain="[('state','in',('new','offer_received'))]"/>
+
+                <!-- Group By -->
+                <group expand="0" string="Group By">
+                    <filter name="group_postcode" string="Postcode" context="{'group_by': 'postcode'}"/>
+                </group>
+            </search>
+        </field>
+    </record>
+
+    <record id="estate_property_action" model="ir.actions.act_window">
+        <field name="name">Properties</field>
+        <field name="res_model">estate.property</field>
+        <field name="view_mode">kanban,list,form</field>
+        <field name="view_id" ref="estate_property_list_view"/>
+        <field name="search_view_id" ref="estate_property_search_view"/>
+        <field name="context">{"search_default_available": 1}</field>
+        <field name="help" type="html">
+            <p class="o_view_nocontent_smiling_face">
+                Create the first property
+            </p>
+        </field>
+    </record>
+</odoo>
diff --git a/estate/views/res_users_views.xml b/estate/views/res_users_views.xml
new file mode 100644
index 00000000000..153bfd1039f
--- /dev/null
+++ b/estate/views/res_users_views.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="res_users_view_form_estate_inherit" model="ir.ui.view">
+        <field name="name">res.users.form.inherit.estate</field>
+        <field name="model">res.users</field>
+        <field name="inherit_id" ref="base.view_users_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//sheet/notebook" position="inside">
+                <page string="Real Estate Properties">
+                    <field name="property_ids" context="{'default_salesman_id': id}">
+                        <list editable="bottom">
+                            <field name="name"/>
+                            <field name="property_type_id"/>
+                            <field name="postcode"/>
+                            <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                            <field name="bedrooms"/>
+                            <field name="living_area"/>
+                            <field name="expected_price"/>
+                            <field name="selling_price"/>
+                        </list>
+                    </field>
+                </page>
+            </xpath>
+        </field>
+    </record>
+</odoo>
+
+
diff --git a/estate_account/__init__.py b/estate_account/__init__.py
new file mode 100644
index 00000000000..7c378d64614
--- /dev/null
+++ b/estate_account/__init__.py
@@ -0,0 +1,3 @@
+from . import models
+
+
diff --git a/estate_account/__manifest__.py b/estate_account/__manifest__.py
new file mode 100644
index 00000000000..b926e2570ff
--- /dev/null
+++ b/estate_account/__manifest__.py
@@ -0,0 +1,17 @@
+{
+    "name": "Estate Accounting Link",
+    "summary": "Link module: integrate Estate with Accounting",
+    "version": "18.0.1.0.0",
+    "author": "",
+    "website": "",
+    "license": "LGPL-3",
+    "installable": True,
+    "application": False,
+    "depends": [
+        "estate",
+        "account",
+    ],
+    "data": [],
+}
+
+
diff --git a/estate_account/models/__init__.py b/estate_account/models/__init__.py
new file mode 100644
index 00000000000..c5006b18cf8
--- /dev/null
+++ b/estate_account/models/__init__.py
@@ -0,0 +1,2 @@
+from . import estate_property
+
diff --git a/estate_account/models/estate_property.py b/estate_account/models/estate_property.py
new file mode 100644
index 00000000000..007f370f66e
--- /dev/null
+++ b/estate_account/models/estate_property.py
@@ -0,0 +1,37 @@
+from odoo import Command, models
+from odoo.exceptions import UserError
+
+
+class EstateProperty(models.Model):
+    _inherit = "estate.property"
+
+    def action_set_sold(self):
+        self.ensure_one()
+        # Step 2: create an empty customer invoice for the buyer
+        buyer = self.buyer_id
+        if buyer:
+            Move = self.env["account.move"].with_context(default_move_type="out_invoice")
+            journal = Move._get_default_journal()
+            if not journal:
+                raise UserError("No Sales Journal configured for this company.")
+            fee_amount = (self.selling_price or 0.0) * 0.06
+            Move.create({
+                "partner_id": buyer.id,
+                "move_type": "out_invoice",
+                "journal_id": journal.id,
+                "invoice_line_ids": [
+                    Command.create({
+                        "name": "6% Commission on selling price",
+                        "quantity": 1,
+                        "price_unit": fee_amount,
+                    }),
+                    Command.create({
+                        "name": "Administrative fees",
+                        "quantity": 1,
+                        "price_unit": 100.0,
+                    }),
+                ],
+            })
+        return super().action_set_sold()
+
+