---
title: "40ft Backyard ADU with Expandable Container House"
description: "40ft folding container house with bathroom, expandable container office for large teams. Quick setup, insulation-ready, customizable exterior and interior layout."
url: https://factorysea.com/product/40ft-backyard-adu-with-expandable-container-house/
date: 2026-07-12
modified: 2026-07-12
author: "camphortreeprefab"
image: https://img.factorysea.com/2026/07/29043919/p50-2-1.jpg
type: product
lang: en
product_type: simple
currency: CNY
availability: instock
---

# 40ft Backyard ADU with Expandable Container House

What Is a Backyard ADU and Why Do You Need One？

An ADU (Accessory Dwelling Unit) is a secondary dwelling unit built on the same lot as your primary home.  It is commonly used as an office, a vacation rental, or a senior living space (granny flat, in-law suite, ). States like California, Oregon, and Washington have dramatically relaxed ADU regulations, allowing millions of homeowners to add backyard homes.

Our **40ft expandable container house** sets up in minutes — expanding from a compact 24m block to a spacious 72㎡ workspace. No foundation needed. Ready in 2-3 days. Ideal for contractors, site managers, and remote teams. Includes pre-wired electrical, insulation-ready walls, and optional bathroom.

![Backyard ADU](https://camphortreeprefab.com/wp-content/uploads/2026/05/p50-3.jpg.webp)

### Core Features

1. **Expandable Design** – Transforms from compact to spacious living area
2. **Foldable Structure** – Easy to collapse for transportation and storage
3. **Quick Assembly** – Can be set up within hours with minimal labor
4. **Modular System** – Connect multiple units for larger space requirements
5. **Steel Construction** – Durable shipping container-grade steel
6. **Portable Solution** – Easy relocation to different sites
7. **Weather Resistant** – Waterproof, wind-resistant, and corrosion-protected
8. **Insulated Option** – Thermal insulation for year-round comfort
9. **Customizable Layout** – Flexible interior design configurations
10. **Eco-Friendly** – Sustainable construction with recyclable materials
11. **Cost Effective** – Affordable alternative to traditional construction
12. **Low Maintenance** – Minimal upkeep required
13. **Multi-Functional** – Suitable for various applications and climates
14. **Quick Deployment** – Ideal for emergency and temporary housing needs
15. **Modern Design** – Contemporary aesthetics with practical functionality

### Product Parameters

| Parameter | Specification |
| --- | --- |
| Folded size | 11.8m(L) × 2.2m(W) × 2.48m(H) |
| Expanded size | 11.8m(L) × 6.3m(W) × 2.48m(H) |
| Expanded floor area | ~72㎡ |
| Frame material | galvanized steel |
| Wall panel | Sandwich panel |
| Optional upgrades | Glass wall, bathroom, kitchen, AC, insulation … |

### Application scenarios

- **Residential Living**: Primary home, vacation house, guest house, backyard office
- **Commercial Use**: Office space, retail shop, café, exhibition booth, hotel room
- **Emergency Housing**: Disaster relief shelter, temporary accommodation, refugee housing
- **Construction Site**: On-site office, worker accommodation, equipment storage
- **Education**: Classroom, student dormitory, research station, library
- **Healthcare**: Mobile clinic, quarantine facility, dental office, laboratory
- **Tourism**: Safari lodge, eco-resort, glamping unit, visitor center
- **Agriculture**: Farmhouse, equipment storage, worker housing
- **Military & Defense**: Field office, barracks, command center
- **Event Management**: Temporary accommodation, ticket booth, information center
- **Remote Locations**: Mining camp, oil field housing, research station
- **Community Projects**: Affordable housing, social housing, community centers

### Product  Layout

#### Internal Layout Display

![](https://camphortreeprefab.com/wp-content/uploads/2024/07/%E5%B8%83%E5%B1%80-3.jpg)

#### 📸 Actual Internal Display

![](https://camphortreeprefab.com/wp-content/uploads/2024/07/in-1.jpg)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/kitchen-2-300x225.jpg)](https://camphortreeprefab.com/?attachment_id=9354)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/kitchen-4-300x225.jpg)](https://camphortreeprefab.com/?attachment_id=9353)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/kitchen-1-300x225.jpg)](https://camphortreeprefab.com/?attachment_id=9352)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/in-4-225x300.jpg)](https://camphortreeprefab.com/?attachment_id=9401)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/kitchen-5-225x300.jpg)](https://camphortreeprefab.com/?attachment_id=9357)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/bath-1-225x300.jpg)](https://camphortreeprefab.com/?attachment_id=9350)

[![](https://camphortreeprefab.com/wp-content/uploads/2024/07/bath-2-225x300.jpg)](https://camphortreeprefab.com/?attachment_id=9351)

##

## 🛠️ Installation Steps

**Simple 3-Step Expansion Process:**

1. **Delivery & Placement** – Compact unit delivered to site
2. **Unfolding Process** – Expand walls and roof using hydraulic system
3. **Finishing & Connection** – Secure expanded sections, install interior

![](https://camphortreeprefab.com/wp-content/uploads/2024/07/step.jpg)

### Why choose CamphorTree Prefab ?

- ✔️ **Space Efficiency**: 200-300% more living space when expanded ✔️ **Cost Savings**: 40-60% less than traditional construction ✔️ **Time Efficient**: 80% faster than conventional building methods ✔️ **Portability**: Relocate your home without rebuilding ✔️ **Sustainability**: Eco-friendly materials and reduced construction waste ✔️ **Durability**: 20+ year lifespan with minimal maintenance ✔️ **Flexibility**: Multiple configurations for changing needs ✔️ **Quality Assurance**: ISO certified manufacturing processes ✔️ **Global Experience**: Successfully deployed in 30+ countries ✔️ **Comprehensive Support**: End-to-end service from design to installation

### **Ready to Revolutionize Your Living Space?**