diff --git a/estate/__init__.py b/estate/__init__.py
new file mode 100644
index 00000000000..a9e3372262c
--- /dev/null
+++ b/estate/__init__.py
@@ -0,0 +1,2 @@
+
+from . import models
diff --git a/estate/__manifest__.py b/estate/__manifest__.py
new file mode 100644
index 00000000000..e5838f68794
--- /dev/null
+++ b/estate/__manifest__.py
@@ -0,0 +1,17 @@
+{
+    'name': 'Estate',
+    'category': 'Sales',
+    'sequence': 1,
+    'summary': 'Sell and bid on the hottest real estate properties.',
+    'website': 'https://www.odoo.com/app/estate',
+    'depends': [
+        'base_setup',
+        'web',
+    ],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_views.xml',
+        'views/estate_menus.xml',
+    ],
+    'application': True
+}
diff --git a/estate/models/__init__.py b/estate/models/__init__.py
new file mode 100644
index 00000000000..a2dc03361d9
--- /dev/null
+++ b/estate/models/__init__.py
@@ -0,0 +1,6 @@
+
+from . import estate_property
+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer
+from . import inherited_model
diff --git a/estate/models/estate_property.py b/estate/models/estate_property.py
new file mode 100644
index 00000000000..3ca8ba51001
--- /dev/null
+++ b/estate/models/estate_property.py
@@ -0,0 +1,123 @@
+from odoo import fields, models, api
+from dateutil.relativedelta import relativedelta
+from odoo.exceptions import UserError
+
+
+class EstateProperty(models.Model):
+    _name = 'estate.property'
+    _description = "Real Estate Property"
+    _order = 'id desc'
+
+    name = fields.Char("Title", required=True, translate=True)
+    property_type_id = fields.Many2one(
+        'estate.property.type',
+        string="Property Type",
+    )
+    postcode = fields.Char("Postcode", required=True)
+    availability = fields.Date(
+        "Available From",
+        required=True,
+        copy=False,
+        default=lambda self: fields.Date.today() + relativedelta(months=3),
+    )
+    description = fields.Text("Description")
+    bedrooms = fields.Integer("Bedrooms", required=True, default=2)
+    living_area = fields.Integer("Living Area (sqm)", required=True)
+    currency_id = fields.Many2one('res.currency', string="Currency", default=lambda self: self.env.company.currency_id.id)
+    expected_price = fields.Monetary("Expected Price", required=True)
+    selling_price = fields.Monetary("Selling Price", readonly=True, copy=False)
+    # best_offer_id = fields.Many2one('estate.property.offer', string='Best Offer', readonly=True)
+    facades = fields.Integer("Facades", default=False)
+    garage = fields.Boolean("Garage", default=False)
+    garden = fields.Boolean("Garden", default=False)
+    garden_area = fields.Integer("Garden Area (sqm)", required=False)
+    garden_orientation = fields.Selection(selection=[('north', "North"), ('south', "South"), ('east', "East"), ('west', "West")], string="Garden Orientation")
+
+    @api.onchange('garden')
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = 'north'
+        else:
+            self.garden_area = 0
+            self.garden_orientation = False
+
+    total_area = fields.Integer("Total Area (sqm)", compute='_compute_area')
+
+    @api.depends('garden_area', 'living_area')
+    def _compute_area(self):
+        for record in self:
+            record.total_area = record.living_area + record.garden_area
+
+    state = fields.Selection(
+        string="Status",
+        selection=[('new', "New"), ('offer_received', "Offer Received"), ('offer_accepted', "Offer Accepted"), ('sold', "Sold"), ('canceled', "Canceled")],
+        required=True,
+        copy=False,
+        default='new',
+    )
+
+    def sold_action(self):
+        for record in self:
+            if record.state != 'canceled':
+                record.state = 'sold'
+            else:
+                raise UserError(record.env._("You can not sell a canceled property."))
+        return True
+
+    def cancel_action(self):
+        for record in self:
+            if record.state != 'sold':
+                record.state = 'canceled'
+            else:
+                raise UserError(record.env._("You can not cancel a sold property."))
+        return True
+    active = fields.Boolean("Active", default=True)
+    buyer_id = fields.Many2one('res.partner', string="Buyer", copy=False)
+    seller_id = fields.Many2one('res.users', string="Salesperson", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many(
+        'estate.property.tag',
+        string="Tags",
+    )
+    offer_ids = fields.One2many(
+        'estate.property.offer',
+        'property_id',
+        string="Offers",
+    )
+    best_offer = fields.Monetary(
+        string="Best Offer",
+        compute='_compute_best_offer',
+    )
+
+    @api.depends('offer_ids.price')
+    def _compute_best_offer(self):
+        for record in self:
+            if record.offer_ids:
+                record.best_offer = max(record.offer_ids.mapped('price'))
+            else:
+                record.best_offer = 0.0
+
+    def write(self, vals):
+        result = super().write(vals)
+        if 'offer_ids' in vals:
+            for record in self:
+                if record.offer_ids and record.state == 'new':
+                    record.state = 'offer_received'
+                elif not record.offer_ids and record.state == 'offer_received':
+                    record.state = 'new'
+        return result
+
+    _check_expected_price = models.Constraint(
+        'CHECK(expected_price > 0)',
+        "The expected price should be higher than zero.",
+    )
+    _check_selling_price = models.Constraint(
+        'CHECK(selling_price >= 0)',
+        "The selling price can't be negative",
+    )
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_new_or_canceled(self):
+        if any((not (record.state == 'new') and not (record.state == 'canceled'))
+        for record in self):
+            raise UserError("Only new and canceled properties can be deleted!")
diff --git a/estate/models/estate_property_offer.py b/estate/models/estate_property_offer.py
new file mode 100644
index 00000000000..6416f2b7beb
--- /dev/null
+++ b/estate/models/estate_property_offer.py
@@ -0,0 +1,77 @@
+from odoo import models, fields, api
+from dateutil.relativedelta import relativedelta
+from odoo.exceptions import UserError, ValidationError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = 'estate.property.offer'
+    _description = "Offer to buy real estate property"
+    _order = 'price desc'
+
+    property_id = fields.Many2one(
+        'estate.property',
+        string="Property Name",
+        required=True,
+        ondelete='cascade',
+    )
+    property_type_id = fields.Many2one(related="property_id.property_type_id", store=True)
+    partner_id = fields.Many2one('res.partner', string="Partner", required=True)
+    create_date = fields.Date(default=lambda self: fields.Date.today())
+    validity = fields.Integer("Validity (days)", default=7)
+    date_deadline = fields.Date(
+        "Deadline",
+        compute='_compute_date',
+        inverse='_inverse_date',
+    )
+
+    @api.depends('validity')
+    def _compute_date(self):
+        for record in self:
+            record.date_deadline = record.create_date + relativedelta(days=record.validity)
+
+    def _inverse_date(self):
+        for record in self:
+            record.validity = (record.date_deadline - record.create_date).days
+
+    currency_id = fields.Many2one('res.currency', string="Currency", default=lambda self: self.env.company.currency_id.id)
+    price = fields.Monetary("Price")
+    status = fields.Selection(
+        string="Status",
+        selection=[('accepted', "Accepted"), ('refused', "Refused")],
+        copy=False,
+    )
+
+    def accept_offer(self):
+        for record in self:
+            if record.property_id.offer_ids.filtered(lambda o: o.status == 'accepted'):
+                raise UserError(record.env._("There is already an accepted offer for this property."))
+            record.status = 'accepted'
+            record.property_id.selling_price = record.price
+            record.property_id.state = 'offer_accepted'
+            record.property_id.buyer_id = record.partner_id
+        return True
+
+    def refuse_offer(self):
+        for record in self:
+            record.status = 'refused'
+        return True
+
+    _check_price = models.Constraint(
+        'CHECK(price > 0)',
+        "The offer price must be positive",
+    )
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            if 'property_id' in vals and 'price' in vals:
+                linked_property = self.env['estate.property'].browse(vals['property_id'])
+                if linked_property.best_offer and vals['price'] < linked_property.best_offer:
+                    raise UserError("The offer price must be higher than the current best offer of %.2f" % property.best_offer)
+        return super().create(vals_list)
+
+    @api.constrains('status')
+    def _check_fair_price(self):
+        for record in self:
+            if record.status == 'accepted' and record.price < record.property_id.expected_price * 0.9:
+                raise ValidationError(record.env._(f"The selling price must be at least {90}% of the expected price. \n If you want to accept this offer, lower the expected price."))
diff --git a/estate/models/estate_property_tag.py b/estate/models/estate_property_tag.py
new file mode 100644
index 00000000000..da22dc639cc
--- /dev/null
+++ b/estate/models/estate_property_tag.py
@@ -0,0 +1,19 @@
+from odoo import fields, models
+
+
+class EstatePropertyTag(models.Model):
+    _name = 'estate.property.tag'
+    _description = "Real Estate Property Tag"
+    _order = 'name'
+
+    name = fields.Char(
+        "Name",
+        required=True,
+    )
+    _name_uniq = models.Constraint(
+        'unique(name)',
+        'This property tag already exists.',
+    )
+    color = fields.Integer(
+        "Color"
+    )
diff --git a/estate/models/estate_property_type.py b/estate/models/estate_property_type.py
new file mode 100644
index 00000000000..0146aff7eb6
--- /dev/null
+++ b/estate/models/estate_property_type.py
@@ -0,0 +1,31 @@
+from odoo import fields, models, api
+
+
+class EstatePropertyType(models.Model):
+    _name = 'estate.property.type'
+    _description = "Real Estate Property Type"
+    _order = 'sequence, name'
+
+    name = fields.Char(
+        "Name",
+        required=True,
+    )
+    _name_uniq = models.Constraint(
+        'unique(name)',
+        'This property type already exists.',
+    )
+    property_ids = fields.One2many(
+        'estate.property',
+        'property_type_id',
+    )
+    sequence = fields.Integer("Sequence", default=1)
+    offer_ids = fields.One2many(
+        'estate.property.offer',
+        'property_type_id',
+    )
+    offer_count = fields.Integer(compute='_compute_offer_count')
+
+    @api.depends('offer_ids')
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)
diff --git a/estate/models/inherited_model.py b/estate/models/inherited_model.py
new file mode 100644
index 00000000000..2d873f42463
--- /dev/null
+++ b/estate/models/inherited_model.py
@@ -0,0 +1,7 @@
+from odoo import models, fields
+
+
+class Users(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many('estate.property', 'seller_id', 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..404f43c06fe
--- /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,estate.property,model_estate_property,base.group_user,1,1,1,1
+access_estate_property_type,estate.property.type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag,estate.property.tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer,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..e65356d0bd3
--- /dev/null
+++ b/estate/views/estate_menus.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <menuitem id="estate_menu_root" name="Estate">
+        <menuitem id="estate_first_level_menu" name="Advertisements">
+            <menuitem id="estate_property_menu_action" action="estate_property_action"/>
+        </menuitem>
+        <menuitem id="estate_second_level_menu" name="Settings">
+            <menuitem id="estate_property_type_menu_action" action="estate_property_type_action"/>
+            <menuitem id="estate_property_tag_menu_action" action="estate_property_tag_action"/>
+        </menuitem>
+    </menuitem>
+</odoo>
diff --git a/estate/views/estate_property_views.xml b/estate/views/estate_property_views.xml
new file mode 100644
index 00000000000..4a8c456a7e7
--- /dev/null
+++ b/estate/views/estate_property_views.xml
@@ -0,0 +1,244 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="estate_property_list_view" model="ir.ui.view">
+        <field name="name">estate.property.list.view</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <list string="Properties"
+            decoration-success="state == 'offer_accepted' or state == 'offer_received'"
+            decoration-bf="state == 'offer_accepted'"
+            decoration-muted="state == 'sold'">
+                <field name="name"/>
+                <field name="property_type_id"/>
+                <field name="postcode"/>
+                <field name="tag_ids" widget="many2many_tags" context="{'no_create': False, 'no_create_edit': False}"/>
+                <field name="bedrooms"/>
+                <field name="living_area"/>
+                <field name="expected_price"/>
+                <field name="selling_price"/>
+                <field name="availability" optional="hide"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_form_view" model="ir.ui.view">
+        <field name="name">estate.property.form.view</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <form string="My New House">
+                <header>
+                    <button name="sold_action" type="object" string="Sold" invisible="state == 'sold' or state == 'canceled'"/>
+                    <button name="cancel_action" type="object" string="Cancel" invisible="state == 'sold' or state == 'canceled'"/>
+                    <field name="state" widget="statusbar" statusbar_visible="new,offer_received,offer_accepted,sold"/>
+                </header>
+                <sheet>
+                    <div class="oe_title mw-100">
+                        <div class="d-flex justify-content-between align-items-center">
+                            <h1 class="flex-grow-1">
+                                <field class="text-break" options="{'line_breaks': False}" widget="text" name="name" placeholder="My New House"/>
+                            </h1>
+                        </div>
+                    </div>
+                    <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                    <group name="main">
+                        <group>
+                            <field name="property_type_id" options="{'no_create':True, 'no_open':True}"/>
+                            <field name="postcode"/>
+                            <field name="availability"/>
+                        </group>
+                        <group>
+                            <field name="expected_price"/>
+                            <field name="best_offer"/>
+                            <field name="selling_price"/>
+                        </group>
+                    </group>
+                    <notebook>
+                        <page name="estate_attributes" string="Description">
+                            <group>
+                                <field name="description"/>
+                                <field name="bedrooms"/>
+                                <field name="living_area"/>
+                                <field name="facades"/>
+                                <field name="garage"/>
+                                <field name="garden"/>
+                                <field name="garden_area" invisible="not garden"/>
+                                <field name="garden_orientation" invisible="not garden"/>
+                                <field name="total_area"/>
+                            </group>
+                        </page>
+                        <page name="offers" string="Offers">
+                            <field name="offer_ids" readonly="state != 'new' and state != 'offer_received'"/>
+                        </page>
+                        <page name="estate_contacts" string="Other Info">
+                            <group>
+                                <field name="seller_id"/>
+                                <field name="buyer_id"/>
+                            </group>
+                        </page>
+                    </notebook>
+                </sheet>
+            </form>
+        </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">list,form</field>
+        <field name="search_view_id" ref="estate_property_search_view"/>
+        <field name="context">{'search_default_state': True}</field>
+    </record>
+
+    <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="Estate Property">
+                <field name="name" string="Title"/>
+                <field name="postcode" string="Postcode"/>
+                <field name="expected_price" string="Expected Price"/>
+                <field name="bedrooms" string="Bedrooms"/>
+                <field name="living_area" string="Living Area" filter_domain="[('living_area', '>=', self)]"/>
+                <field name="facades" string="Facades"/>
+                <field name="seller_id" string="Salesperson"/>
+                <separator/>
+                <filter name="state" string="Available" domain="[('state','in', ['new','offer_received'])]"/>
+                <group>
+                    <filter name="postcode" string="Postcode" context="{'group_by':'postcode', 'residual_visible': True}"/>
+                    <filter name="seller_id" string="Salesperson" context="{'group_by':'seller_id', 'residual_visible': True}"/>
+                </group>
+            </search>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Property 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_list_view" model="ir.ui.view">
+        <field name="name">estate.property.offer.list.view</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list string="Offers" 
+            editable="bottom" 
+            decoration-success="status == 'accepted'"
+            decoration-danger="status == 'refused'">
+                <field name="price"/>
+                <field name="partner_id"/>
+                <field name="validity"/>
+                <field name="date_deadline"/>
+                <button name="accept_offer" title="Accept Offer" type="object" icon="fa-check" invisible="status"/>
+                <button name="refuse_offer" title="Refuse Offer" type="object" icon="fa-times" invisible="status"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_form_view" model="ir.ui.view">
+        <field name="name">estate.property.offer.form.view</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form>
+                <group>
+                    <field name="price"/>
+                    <field name="partner_id"/>
+                    <field name="validity"/>
+                    <field name="date_deadline"/>
+                    <field name="status"/>
+                </group>
+            </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>
+
+    <record id="estate_property_type_form_view" model="ir.ui.view">
+        <field name="name">estate.property.type.form.view</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <form>
+                 <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <button name="%(estate_property_offer_action)d" type="action"
+                            class="oe_stat_button" icon="fa-money"
+                            invisible="offer_count == 0">
+                            <field name="offer_count" widget="statinfo" string="Offer(s)"/>
+                        </button>
+                    </div>
+                    <div class="oe_title mw-100">
+                        <div class="d-flex justify-content-between align-items-center">
+                            <h1 class="flex-grow-1">
+                                <field class="text-break" options="{'line_breaks': False}" widget="text" name="name" placeholder="e.g. House"/>
+                            </h1>
+                        </div>
+                    </div>
+                    <notebook>
+                        <page name="associated_properties" string="Properties">
+                            <group>
+                                <field name="property_ids" string="">
+                                    <list>
+                                        <field name="name"/>
+                                        <field name="expected_price"/>
+                                        <field name="state"/>
+                                    </list>
+                                </field>
+                            </group>
+                        </page>
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_type_list_view" model="ir.ui.view">
+        <field name="name">estate.property.type.list.view</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <list>
+                <field name="name"/>
+                <field name="sequence" widget="handle"/>
+            </list>
+        </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</field>
+    </record>
+
+    <record id="estate_property_tag_form_view" model="ir.ui.view">
+        <field name="name">estate.property.tag.form.view</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form>
+                <group>
+                    <field name="name"/>
+                </group>
+            </form>
+        </field>
+    </record>
+
+    <record id="inherited_model_view_form" model="ir.ui.view">
+        <field name="name">inherited.model.form.view</field>
+        <field name="model">res.users</field>
+        <field name="inherit_id" ref="base.view_users_form"/>
+        <field name="arch" type="xml">
+            <!-- find field description and add the field
+                new_field after it -->
+            <xpath expr="//page[@name='page_security']" position="after">
+                <page name='managed_properties' string="Managed Properties">
+                    <field name="property_ids"/>
+                </page>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>
diff --git a/ruff.toml b/ruff.toml
new file mode 100644
index 00000000000..e84deba95cb
--- /dev/null
+++ b/ruff.toml
@@ -0,0 +1,44 @@
+# Exclude a variety of commonly ignored directories.
+exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".git-rewrite",
+    ".hg",
+    ".ipynb_checkpoints",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pyenv",
+    ".pytest_cache",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    ".vscode",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "site-packages",
+    "venv",
+]
+
+# Assume Python 3.12
+target-version = "py312"
+
+line-length = 255 
+[lint]
+# Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`) codes by default.
+select = ["ALL"]
+ignore = ["A","ARG","ANN","B","C901","D","DTZ","DOC","E501","ERA001","FBT","N","PD","PERF","PIE790","PLR","PT","Q","RSE102","RUF001","RUF012","S","SIM102","SIM108","SLF001","TID252","UP031","TRY003","TRY300","E713","SIM117","PGH003","RUF005","FIX","TD","TRY400","C408","PLW2901","PTH","EM102","INP001","CPY001","E266","PIE808","PLC2701","RUF100","FA100","FURB","C420","COM812","TRY002","B904","EM101","I001","UP006","UP007","RET","RUF021","E741","FAST","ASYNC","AIR","DJ","NPY","FA102","F401"]
+
+# Allow fix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = ["A","ARG","ANN","B","C901","D","DTZ","DOC","E501","ERA001","FBT","N","PD","PERF","PIE790","PLR","PT","Q","RSE102","RUF001","RUF012","S","SIM102","SIM108","SLF001","TID252","UP031","TRY003","TRY300","E713","SIM117","PGH003","RUF005","FIX","TD","TRY400","C408","PLW2901","PTH","EM102","INP001","CPY001","E266","PIE808","PLC2701","RUF100","FA100","FURB","C420","COM812","TRY002","B904","EM101","I001","UP006","UP007","RET","RUF021","E741","FAST","ASYNC","AIR","DJ","NPY","FA102","F401"]
+[format]
+quote-style = "preserve"