Expandable ADU Manufactured Home Solution
This product can also be promoted as an adu manufactured home for buyers who prefer a factory-built housing solution. The main structure is prepared before shipment, and the expandable design helps the unit create more interior space after arrival.



Key Specifications of 2 Story ADU
| Item | Details |
|---|---|
| Product Type | Two-level expandable prefab ADU |
| Structure | Two stacked expandable prefab house units |
| Main Unit | 20ft expandable container house |
| Single Unit Expanded Size | W6320 × L5900 × H2480 mm |
| Single Unit Folded Size | W2200 × L5900 × H2480 mm |
| Single Unit Floor Area | Approx. 37㎡ |
| Estimated Total Floor Area | Approx. 74㎡, subject to final layout confirmation |
| Frame Material | Galvanized steel frame, Q235 / Q345 |
| Wall Panel | EPS sandwich panel |
| Roof System | Sandwich panel with decorative ceiling |
| Internal Height | Approx. 2200 mm, final height can be discussed |
| Staircase | Exterior steel staircase |
| Upper Floor Access | Balcony / platform access |
| Electrical System | Region-specific wiring and customized circuit breakers |
| Custom Options | Layout, doors, windows, bathroom, kitchen, wall panels, color, height and electrical system |
| Optional Insulation | 50 / 75 / 100mm panels, PU core or rock wool insulation |
| Application | Backyard ADU, rental apartment, guest house, family extension, resort room, prefab housing project |
| Lead Time | 15–30 days after order confirmation |
| Price | Based on final layout, configuration, quantity and destination |
Available Expandable Container House Sizes
Sunfine can supply different expandable container house sizes for different project requirements. The 10ft model is suitable for compact applications, while larger models can be selected for residential projects, rental units, site accommodation, resort rooms, and commercial housing solutions.
If buyers need a larger living area, they can compare this compact model with the 20ft expandable container house, 30ft expandable container house, and 40ft expandable container house options.
Custom Options for Project Buyers
Every project has different requirements. Sunfine can discuss customization based on buyer needs, order quantity, shipment plan, and local market expectations.
Custom options may include:
- Exterior wall color
- Interior wall finish
- Door type and position
- Window size and layout
- Roof design
- Flooring material
- Bathroom or kitchen planning
- Electrical wiring standard
- Circuit breaker configuration
- Interior partition layout
- Height adjustment
For B2B buyers, these customization options are important when preparing products for local resale, rental projects, construction sites, commercial use, or residential applications.
Certifications for 2 Story ADU Projects
Sunfine can provide related certification documents and test reports for 2 story adu projects according to buyer requirements, product configuration, and destination market standards.
Available reference documents for 2 story adu projects may include:
- CE Certificate
- SAA Certificate
- Fire Safety & RoHS Compliance
- Asbestos-Free Certificate for EPS Board
- Asbestos-Free Certificate for MGO Board
- CSA Certificate
- Australian Standard AS Pass Report
- SGS Verification
These documents help importers, distributors, contractors, and project buyers review 2 story adu compliance before bulk purchasing, customs clearance, local resale, or project submission.
Final applicable certificates for each 2 story adu should be confirmed according to the selected product model, materials, electrical standard, destination country, and local approval requirements.
Applications
Backyard ADU
This product is suitable for adu backyard projects where buyers need additional living space behind an existing home. It can be used as a guest house, family room, rental unit, or private living space.
Rental ADU Apartment
The two-level structure is suitable for adu apartments where the buyer wants a more complete living unit. The layout can be planned with bedrooms, bathroom, kitchen area, and living space according to the final drawing.
Luxury Guest House
With upgraded exterior panels, glass doors, windows, stairs, and platform design, this model can be used as a luxury adu for resorts, private properties, or guest accommodation projects.
Manufactured Housing Supply
For distributors and contractors, this 2 story adu can be developed as an adu manufactured home product line for customers looking for factory-built housing with customizable layouts.
Frequently Asked Questions
What is an ADU?
An ADU, or accessory dwelling unit, is a secondary housing unit built on the same property as a main house. It can be used as a guest house, rental unit, family living space, backyard apartment, or independent small home.
What is a 2 story ADU?
A 2 story adu is a two-level accessory dwelling unit. This product uses two expandable prefab house units stacked together to create a compact vertical living space with upper and lower floors.
Is this product made from expandable container houses?
Yes. This model is based on two 20ft expandable container house units. Each unit is transported in a folded form and expanded on site before the two-level structure is completed.
Can the ADU layouts be customized?
Yes. adu layouts can be customized according to project needs, including bedroom quantity, bathroom location, kitchen position, windows, doors, stairs, and interior partitions.
Can this be used as a luxury ADU?
Yes. With wood-grain exterior panels, steel stairs, glass doors, windows, and a two-level design, this product can be positioned as a luxury adu for backyard housing, resort accommodation, or rental projects.
Is it suitable for ADU apartments?
Yes. The two-level structure can be planned as adu apartments for rental housing, guest accommodation, or compact residential use. The final apartment layout should be confirmed by drawing.
Can this be used in a backyard?
Yes. This product can be used for an adu backyard project if the site has enough space for unloading, lifting, installation, foundation work, and local approval.
What information is needed before quotation?
Buyers should provide the target layout, quantity, destination country, electrical standard, bathroom and kitchen requirements, exterior style, and site use. Final price depends on configuration, drawing, quantity, and shipping details.








