40' Expandable Container Office | 3 Private Offices, Restroom, Reception & Open Workspace | 865 SF

A Full-Size Office in a Foldable Frame

The CHOMEX 40' Expandable Container Office provides approximately 865 SF of spacious, professional workspace in a compact, transportable expandable structure.

Designed for businesses, construction sites, industrial facilities, remote operations, and temporary or permanent office applications, this configuration combines 3 private offices, a reception area, a private restroom, and a large flexible open workspace within one expandable unit.

Once delivered, the structure unfolds from its transport configuration into a full-size office measuring approximately 38' 9" × 20' 5". The open interior can accommodate multiple workstations, visitor seating, meeting areas, storage, or collaborative workspace depending on your operation.

Large windows provide natural light throughout the office, while durable interior finishes, integrated electrical infrastructure, insulation, and HVAC-ready construction create a comfortable workspace suitable for year-round use.

Built on CHOMEX's 40' expandable platform, the unit is engineered for rapid deployment, efficient transportation, and flexible commercial use, making it an excellent alternative to traditional site-built offices and conventional job site trailers.

🏢 Key Features

• 3 Private Offices: Enclosed workspaces ideal for managers, supervisors, meetings, or confidential work.
• Reception / Waiting Area: Dedicated space for welcoming employees, visitors, vendors, or customers.
• Large Open Workspace: Flexible central area for multiple workstations, collaborative desks, meetings, training, or additional seating.
• Private Restroom: Integrated restroom with toilet, sink, and plumbing connections.
• Approx. 865 SF Expanded: Large usable office footprint from a transportable 40' expandable structure.
• High-Ceiling Design: Creates a brighter and more spacious working environment.
• Large Windows: Provides abundant natural light throughout the workspace.
• Flexible Interior Configuration: Workspace can be adapted to different operational requirements.
• Rapid Setup: Expandable structure designed for fast on-site deployment.
• Durable Construction: Fire-retardant materials, insulated panels, corrosion-protected frame, and sound-reducing construction.
• Utility-Ready: Pre-framed for electrical, plumbing, and HVAC connections.
• Transportable Design: Folds into a compact configuration for transportation and relocation.

📐 Dimensions

• Expanded Size: 38' 9" L × 20' 5" W × 8' 2" H
• Internal Size: 37' 10" L × 19' 11" W × 7' 3" H
• Folded Size: 38' 9" L × 7' 3" W × 8' 2" H
• Surface Area: Approx. 865 SF
• Ceiling Height: 8' minimum – 9'6" maximum (varies by model)

The expandable design allows the office to maintain a compact footprint during transportation before opening into a significantly larger workspace at the installation site.

🖥 Office Layout

3 Private Offices

Separate enclosed offices provide quieter spaces for management, administrative staff, private meetings, or focused work.

Reception / Waiting Area

The front portion of the office serves as a reception and visitor waiting area, providing a professional entry point for employees, customers, subcontractors, and vendors.

Large Open Workspace

The central open area provides maximum flexibility and can accommodate multiple desks and workstations, collaborative tables, meeting space, training areas, filing and storage systems, printers, or additional visitor seating.

Private Restroom

A dedicated restroom is integrated into the office layout and can be connected to the site's water and sewer or septic infrastructure.

🔧 Construction Specifications

• Wallboard: Type 950 – 65 mm double-sided 0.3 mm EPS color steel composite panel
• Frame: Electrostatic sprayed protective coating + anti-corrosion layer
• Folding Hinge: 130 mm galvanized embedded hinge
• Floor: 18 mm bamboo glue board + 4 mm SPC stone plastic flooring
• Main Exterior Roof: Type 950 – 50 mm EPS steel composite + 0.45 mm corrugated veneer
• Ceiling Panels: Type 950 – 50 mm EPS steel composite
• Wing Roof Panels: Type 950 – 65 mm EPS steel composite + 0.45 mm corrugated veneer
• Windows & Doors: Aluminum alloy double-glass sliding windows and steel fire door; optional broken-bridge aluminum
• Electrical: Standard wiring; customizable according to project requirements

🚪 Door & Window Details

Doors

• Security Door: Zinc alloy steel plate + aluminum frame + smart fingerprint lock
• Entrance Door: Broken-bridge aluminum + double-layer tempered glass
• Interior Office Doors: Titanium-magnesium alloy frame + sandwich wood board
• Restroom Door: Titanium-magnesium alloy + tempered glass

Windows

Broken-bridge aluminum or aluminum alloy frames with double-layer tempered glass. Optional plastic steel frames are also available.

The window configuration provides natural light throughout the open workspace and private offices while maintaining a professional commercial appearance.

🚿 Restroom Details

The private restroom can include a toilet, wash basin, mirror/vanity, durable UV wall panels, SPC flooring, polyurethane insulated base, steel bottom protection, and water and sewer plumbing connections.

The unit arrives prepared for connection to the appropriate on-site utilities.

🧱 Exterior Wall Panels

The exterior wall system combines lightweight, high-strength construction with cold and heat resistance, A2 fire protection, and a durable, long-lasting finish. Multiple exterior color options are available, and the panel materials are 100% recyclable.

🎨 Interior Wall Panel Options

Available interior finishes include Beige, Fine Fabric, Sub-Gray Country, Fine Pearl, Boutique Hot Stamping, Wenge Wood A009 – Double Inclined Groove, and A003 Dashan Wood.

🪵 Floor Color Selections

• 4.0 mm SPC Stone Plastic Flooring: HY8911, HY8918, HY8920, HY8915, HY892
• 8.0 mm SPC Stone Plastic Flooring: F8581, F8582, F8583, F8585, F8586

🔄 Ideal Applications

The CHOMEX 40' Expandable Container Office provides a flexible solution for construction sites, project management offices, engineering offices, administrative offices, corporate satellite offices, temporary office expansions, industrial and manufacturing facilities, warehouse management offices, remote operations centers, sales offices, field offices, training facilities, security offices, emergency operations, and other commercial applications.

Because the interior is configurable, the expandable platform can be adapted to different staffing levels and operational requirements.

🛠 What's Included

The standard configuration includes the 40' expandable modular office structure, approximately 865 SF of expanded workspace, 2 private offices, reception/waiting area, large open workspace, private restroom, exterior windows and doors, interior partition walls and doors, interior wall and ceiling finishes, SPC flooring, standard electrical wiring, interior lighting, restroom plumbing infrastructure, and insulated wall and roof system.

Final configuration and included equipment may vary depending on selected options and project requirements.

The exterior deck shown in some photos is an optional add-on and is not included in the standard unit price. Deck size, finish, railing, and configuration can be customized based on project requirements.

🛠 Customization Available

Need a different office configuration?

CHOMEX expandable offices can be customized to accommodate your specific business, workforce, or jobsite requirements.

Available options may include additional private offices, larger open-plan workspaces, conference or meeting rooms, break rooms or kitchenettes, additional restroom configurations, storage or filing rooms, reception areas, additional electrical outlets, data and networking requirements, HVAC options, alternative doors and windows, custom interior and exterior finishes, office partitions, branding, and exterior color options.

For larger projects, multiple expandable units can also be deployed to create additional office capacity.

Contact CHOMEX for custom configurations, project requirements, or volume orders.

🏗 Expand Your Workspace Without Building From Scratch

Whether you need a professional jobsite headquarters, additional administrative space, a remote field office, or a standalone commercial workspace, the CHOMEX 40' Expandable Container Office delivers approximately 865 SF of usable office space from a transportable expandable structure.

2 private offices. Reception. Open workspace. Private restroom. One expandable 40' unit.

Contact CHOMEX today for pricing, customization options, and volume-order information.

Free nationwide delivery across the continental U.S. via flatbed or tilt-bed trucks.Crane service available (additional cost).Lead Time: 6-8 weeks

📄 See Shipping Policy

⚠️ Check local zoning and permitting regulations before purchase.

• 3-Year Structural Warranty
• 3-Year Electrical & Plumbing Parts Warranty
• Learn More About Warranty

1. Select layout & quantity
2. Choose finishes (optional)
3. Confirm details within 72 hrs
4. Production & delivery in 6-8 weeks
5. Receive, unfold, connect, and move in
   

For more information, visit The CHOMEX Process.