This two story prefab home is created by stacking two flat-roof expandable modules. Each module folds for transport and opens after delivery, creating a wider floor area. The two-level configuration makes use of vertical space for residential, guest accommodation, site facilities, or other project applications, subject to engineering review and local requirements.
The specifications below describe one 20ft flat-roof expandable module, based on the reference data provided. They are not the combined dimensions or weight of the completed two-story building. The final stacked design must be confirmed in project-specific structural and installation drawings.
The building is formed by stacking two expandable units. Each module has a folded transport configuration and an expanded configuration. Stacking requires a model-specific structural connection and installation plan; confirm the support frame, connection details, lifting sequence, access equipment, and site preparation before production and delivery.
The following data applies to one 20ft flat-roof double-wing expandable module. The final two-story building uses two modules; do not calculate the complete building dimensions or weight by simply doubling these figures. Obtain the approved stacked-building drawing for project values.
| Specification | One 20ft module reference |
|---|---|
| Expanded external dimensions | 5900 × 6700 × 2560 mm |
| Internal dimensions | 5740 × 6540 × 2400 mm |
| Folded dimensions | 5900 × 2200 × 2560 mm |
| Reference floor area | Approx. 39 m² per module |
| Reference occupancy | 2–5 people per module, depending on layout and use |
| Electrical power reference | 12 kW per module; confirm project electrical design |
| Reference weight | Approx. 3.5 tonnes per module |
| Roof type | Flat-roof expandable module |
These are reference specifications for one module. The complete stacked structure requires its own verified drawings for total height, structural loads, connections, stairs, landings, access, and installation. Confirm all final project values with the manufacturer before ordering.
Floor-plan options can be planned around the intended use of each level. Confirm the room arrangement, stair position, circulation space, doors, windows, and service connections for the proposed two-story layout. The images below are planning references and should not replace the approved drawings for this project.
Interior layouts and fit-out can be discussed according to the project requirements. Confirm which items are included, such as partitions, kitchen or bathroom components, cabinets, electrical fittings, doors, windows, and finishes. The final room layouts should be coordinated with the stairs and structural design.
Exterior features can be reviewed against the project drawing and quotation. Confirm available cladding, doors and windows, canopy or terrace options, and any changes required for the two-story installation.
Each module is transported in its designated folded configuration. Shipment planning for a two-story project should account for both modules, packing dimensions, loading method, unloading equipment, delivery access, and the construction sequence at the site. The loading image below is labeled for a 20ft expandable house and is a general reference; confirm the actual packing plan for both modules.
Modular 2 story homes can be planned for different applications, including accommodation, guest use, temporary facilities, or project space. Suitability depends on the selected design, site conditions, structural engineering, utilities, and local rules. The term 2 story ADU may have specific local requirements; verify zoning, permits, building rules, and approval with the relevant authorities and qualified local professionals.
When comparing 2 story prefabricated homes, request a project quotation that clearly identifies the two modules, structural connections, stairs, floor plans, materials, interior scope, packing, and shipping. Confirm whether installation, lifting equipment, foundations, and utility connections are included or arranged separately.
Before production, review the approved drawings for the complete stacked building. Confirm the total building height, floor areas, structural details, transport plan, installation sequence, and included components in writing.
Yes. The described configuration stacks two flat-roof expandable modules. The final structural connections and installation design must be confirmed in the project drawings.
No. They are reference specifications for one 20ft module. Request the approved drawing for the combined building dimensions, total weight, and structural details.
Layouts can be discussed for the project. Confirm room arrangements, stair location, services, and any structural implications in the final plans.
Confirm drawings for both levels, structural connections, total dimensions, stairs, floor plans, included components, packing, unloading, installation responsibilities, and local approval requirements.
Explore custom prefabricated house options, YJD quality information, and the container-house import guide.
