

A mobile expandable prefab house is a fast-deployable, space-efficient prefabricated solution that unfolds and becomes fully usable within hours. It serves perfectly as temporary housing, site offices, vacation cabins and emergency shelters. At YG, we build high-quality prefab expandable house units and offer end-to-end customization to match your exact functional and aesthetic needs. Our units have been delivered to customers across the US, Australia, Europe and Southeast Asia, earning consistent positive feedback for their durability and flexibility.
Mobile Expandable Prefab House Parameter:
| 20FT Basic Characteristics | External dimension (mm) | W6260*L5900*H2480(Side 2270) |
| Internal dimension (mm) | W6160*L5560*H2240(Side 2150) | |
| Folded state (mm) | W2200*L5900*H2480 | |
| Total mass (kg) | 3000 | |
| 30FT Basic Characteristics | External dimension (mm) | W6160*L9000*H2480(Side 2180) |
| Internal dimension (mm) | W6200*L8660*H2240(Side 2060) | |
| Folded state (mm) | W2200*L9000*H2480 | |
| Total mass (kg) | 5000 | |
| 40FT Basic Characteristics | External dimension (mm) | W6160*L11800*H2480(Side2180) |
| Internal dimension (mm) | W6080*L11540*H2200(Side2060) | |
| Folded state (mm) | W2200*L11800*H2480 | |
| Total mass (kg) | 7000 | |
| Smaller Fold Size | External dimension (mm) | W4820*L5900*H2480(Side2270) |
| Internal dimension (mm) | W4660*L5560*H2240(Side2150) | |
| Folded state (mm) | W700*L5900*H2480 | |
| Total mass (kg) | 1850 |


What You Can Fully Customize?
1. Structural & Exterior Upgrades
- Roof systems: Upgrade from standard flat roof to sloped roof, with optional corrugated roof tiles, gutters and downspouts for improved drainage
- Exterior cladding: Replace standard color steel plate with metal carved board, glass curtain wall or Great Wall board
- Additional structures: Add custom terraces and balconies to expand the outdoor usable space
- Support system: Install adjustable support legs to adapt to uneven ground
- Appearance: Choose from our standard color palette, and add company logos or signage for commercial use
2. Wall & Insulation Customization
- Wall panel upgrades: Standard panels can be replaced with graphene wall panels or polyurethane (PU) panels
- Insulation thickness: Increase insulation up to 100mm for superior thermal performance in extreme climates
- Interior finishes: Select from integrated wall panels, wallpaper or latex paint to match your preferred style
3. Flooring Options
Upgrade from standard anti-slip PVC flooring to:
- Ceramic tiles
- Marble flooring
- Lockable SPC flooring
- Wooden flooring
All options are designed for easy cleaning and long-term durability.
4. Window & Door Customization
- Window upgrades: Replace standard windows with awning windows, casement windows or floor-to-ceiling windows
- Door customization: Adjust door positions, styles and sizes to fit your layout
- Security features: Add reinforced doors and window bars for enhanced safety
5. Interior Layout & Functional Upgrades
- Space partitioning: Use removable or permanent partitions to create separate bedrooms, living rooms, kitchens and offices
- Kitchen upgrades: Standard cabinets can be upgraded to U-shaped cabinets with upper cabinets for extra storage
- Bathroom configuration: 40FT models support the installation of two separate bathrooms
- Storage solutions: Add built-in wardrobes, cabinets and wall-mounted shelves to maximize space
- Electrical & plumbing: Customize the number and location of LED lights, power outlets, sinks and water connections


Popular Customization Scenarios for Prefab Expandable House
- Urban tiny homes: Ideal for young professionals seeking affordable independent living. Common choices include open-plan layouts, floor-to-ceiling windows and modern minimalist finishes.
- Vacation cabins: Popular among retirees and outdoor enthusiasts. Typical upgrades include sloped roofs, private terraces and warm pastoral-style interiors.
- Construction site facilities: Configured as worker dormitories, site offices and canteens, with reinforced flooring and durable, easy-to-clean surfaces.
- Commercial spaces: Used as pop-up shops, coffee shops and mobile offices, with glass curtain walls and custom branding.
YG Simple Customization Process
- Consultation: Share your project needs, site conditions and budget with our team
- Design: We create a customized floor plan and detailed quote
- Revision: Adjust the design until it fully meets your expectations
- Production: Your unit is manufactured with strict quality control checks
- Delivery: We are responsible for coordinating the shipment of goods to your country and providing clear installation instructions.


YG Two US Customer Stories: Custom Expandable Modular Houses
Case1:Remote Worker’s Custom Backyard Studio Home
Customer Background: A remote worker in the United States needed a standalone backyard studio that combined living and working space. They wanted a quiet, comfortable environment separate from their main house, with good natural light and year-round livability.
Equipment Selection: They chose YG’s 20ft mobile expandable prefab house with custom upgrades: glass curtain wall for maximum natural light, 100mm graphene insulation panels, floor-to-ceiling windows, lockable SPC flooring, and a compact U-shaped kitchenette.
Customer Feedback: The separate space has greatly improved their work-life balance. The excellent insulation keeps the unit comfortable in all seasons, and the glass wall creates a bright, inspiring working environment.
Case2:General Contractor’s Custom On-Site Work & Living Unit
Customer Background: A small general contractor in the United States needed temporary on-site facilities for a residential renovation project. They required a combined office and worker accommodation unit that was quick to set up, durable enough for construction site use, and comfortable for year-round operation.
Equipment Selection: The customer selected YG’s 30ft mobile expandable prefab house with targeted customizations: 100mm graphene insulation panels for extreme temperature resistance, awning windows for improved ventilation, lockable SPC flooring for heavy-duty use, internal partitions to create a private office and two sleeping areas, a compact U-shaped kitchen, and a sloped roof with gutters and downspouts.
Construction Process: The unit was delivered fully assembled in a folded state. Three local workers completed the unfolding and basic utility connections in 2 hours, allowing the team to move in the same day. All custom interior finishes and fixtures were pre-installed at the factory, requiring no on-site construction work.
Customer Feedback: The unit has performed reliably through both hot summer and cold winter conditions. The durable flooring and easy-to-clean surfaces have held up well to daily construction site use. The ability to fold and relocate the unit to future projects has provided significant long-term cost savings compared to traditional temporary structures.


Prefab Container House Price
If you are looking for a custom expandable modular house that fits your exact requirements, YG is here to help. Our team will work with you to design and build a unit that combines functionality, durability and style, with transparent prefab container house price quotes and no hidden fees. Contact us today to receive a detailed, no-obligation quote for your mobile expandable prefab house.

