Japan's Leading
Modular Space Provider

Combining the best of innovation with environmentally sound philosophies, we are proud to be a partner in solving your modular space needs.

Tough space problems call for tough solutions. Our steel, rigid-framed products are strong enough to withstand nature’s harshest elements. The steel girders are also rust-proofed through hot dip zinc galvanising.
Our modular buildings are foldable and therefore can be flat-packed for easy transportation. They can be easily remodeled, relocated and removed as your needs change. This also enables us to export products made in Japan more easily.
As almost all assembly processes are carried out in our factories, our modular buildings require little on-site construction time. Which means speedy assembly, whatever the weather.
Safety comes first at every stage, from production to installation. Our procedures ensure safety for both our employees and customers.

Tough Protection All Around

To create a comfortable interior without pillars, each unit is defined by a tough box frame that does not require braces or strong walls. Pillarless spaces of up to 9m wide can be created; the largest in Japan’s modular construction industry. In addition, we are constantly increasing safety standards, running tests in the event of natural calamities such as storms and earthquakes.
Fire-proofed for Safety
Fire-resistant phenolic foam is incorporated into the wall and roof insulation. Non-combustible ceiling sheets are installed, and corrosion-resistant cement boards are used for the flooring to improve walking comfort and heat resistance.
Building Certification Compliant (in Japan)
Our modular units comply with building regulations for temporary buildings, and we use a life-sized testing chamber to perform strict checks on the structure to determine it performs as intended. Be it for events or sales offices, or any type of space, we provide buildings that comply with each country’s regulations.
No Proof Wall Required
Because each unit is a structure that supports all loads with just four pillars, there is no need for obstructive sections and load-bearing walls that restrict the layout. The result is an open space with an easy-to-use layout.
The Right Balance of Speed and Safety
The steel foundation* can be easily adjusted by bolting the steel plate and H type steel. Durability and design are improved by plating and phosphate treatment. If required, our team can assist you in acquiring a building permit (only applicable in Japan).

* Because materials are made-to-order, delivery may take time.

Earthquake Resistant

Our products comply with Shizuoka’s earthquake resistance standards, which are the strictest in Japan.

Improved Thermal Insulation
Incorporated in the roof is the same insulation that has been used to fortify the exterior walls of the main building. By reducing the possibility of transferring cold air and heat, we keep the room temperature comfortable throughout summer and winter.

As Flexible As Your Imagination

A simple, sophisticated design that can be used both for temporary and permanent installation: the Box Connection. Buildings are simply installed by following the instructions as stated in the manual. The design of the links between the frame and panels have been thoroughly thought through, and the unit does not use temporary joints.
Any Size, Every Need

Each unit can be connected vertically and horizontally, accommodating to various space sizes and needs.

Concealed Electrical Fixtures for a Clean, Modern Interior
In every unit’s electrical system, an EPS panel is adopted, concealing the wiring. The single phase, 3-wire system and 200V electrical lamp used now correspond to normal standards.
Customisable Materials

Whether it is a rental or sale unit, customisation of the design is possible – with a wide array of options such as FIX glass, louver panels, wave panels, and more. Both the interior and exterior can be customised as well.

A Wide Range of Options

A flexible layout, with fast and safe construction, our modular structures can be used for all spaces such as construction site offices, home sales offices, event facilities and more.

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(Modular) Unit House
Conventional Construction Method
Construction Speed

Quite fast

Extension and Renovation


Pre-planning required

Requires time




Consistent quality

* Depends on the skill of craftsmen
Design Freedom






Earthquake Resistance


* Depends on the skill of craftsmen

* Because materials are made-to-order, delivery may take time.

Our Flatpack Transport System

To ensure fast construction, we designed our modular units to be folded into a flat, easily transported state. This allows up to six units to be transported at once, a time and cost-saving feature that can reduce CO2 emissions by 1/6.

Construction Time Comparison

Modular Building vs Conventional Building

Modular Building
Required construction time: 25 days
Conventional Building
Required construction time: 55 days

* Estimate based on a 2-storey building with 76m2 of floor space.
** Based on use of stick foundation for the method of unit house construction.
*** Construction time may differ according to interior/exterior specifications, site circumstances, etc.

Our Flatpack Transport System

To ensure fast construction, we designed our modular units to be folded into a flat, easily transported state. This allows up to six units to be transported at once, a time and cost-saving feature that can reduce CO2 emissions by 1/6.

Safety by Construction Procedure

When constructing a multi-storeyed building, setting up stairs instead of a stepladder significantly improves safety at work.

Safety Indoors

Since the installation and maintenance of air conditioning units and electrical wiring can be done onsite, within each unit, no stepladder or working at height is required. In addition, installation of facilities can be done concurrently with the construction of the building, cutting down on time considerably.

Safety during Electrical Wiring Work

By installing electrical wiring in the factory in advance, wiring work is greatly simplified. Onsite, electrical work can be completed simply with a connector, so the construction process is safe.

Safety during High Altitude Work
We take safety measures seriously. By tying the main rope and connecting it to a safety belt, the safety of our workers – even at high altitudes – is assured.
Safety during Crane Operation
By lifting the roof and adopting a “butterfly construction method”, the pillars can automatically be erected. This way, no manual power is needed, resulting in a smaller team. So it’s not just efficient – it’s safe too.
Safety during Maintenance
During maintenance, there is no need to use the stepladder to access the roof from the second or third floor – workers can head to the roof via stairs, which are more stable and safe.

Our Products


Available for Rental and Sale

Strong, energy-saving and extremely versatile, the MS1 can be stacked and combined to fit your space needs.

As Strong as Possible
25% more rigid, and 16% stronger compared to conventional products. Even when stacked, the solid structure makes it safe in the event of a natural disaster.

Applications: Shops, offices, schools, medical facilities, etc.


Available for Rental and Sale

The basic series. A unique folding structure creates a sturdy unit that’s also economical.

Keep Costs Low
Quality materials don’t have to come with a hefty price tag. Our modular products are affordable, without compromising on safety.

Applications: Construction site offices, temporary emergency housing, etc.


Product Comparison At A Glance

(L x W x H)
57MS1: 5821 x 2322 x 2800
75MS1: 7639 x 2322 x 2800
(L x W x H)
CT-54J: 5890 x 2350 x 2675
CT-72J: 7390 x 2350 x 2675
CT-90J: 9444 x 2350 x 2820
Total Floor Area
57MS1: 12.60 m2 (3.81 tsubo)
75MS1: 16.64 m2 (5.04 tsubo)
CT-54J: 12.57 m2 (3.80 tsubo)
CT-72J: 15.94 m2 (4.82 tsubo)
CT-90J: 20.37 m2 (6.16 tsubo)
Ceiling Height
Light Steel Frame
Light Steel Frame
Galvanized Steel Sheet (Thickness = 0.5)
Galvanized Steel Sheet (Thickness = 0.5)
Finishing: Volcanic Vitreous Multilayer Board (Thickness = 6)
Insulation Material: Phenolic Foam (Thickness = 20)
Moisture-proofing sheet
Finishing: Coated Plywood Board (Thickness = 4)
Insulation Material: Styrene Foam (Thickness = 25)
Moisture-proofing sheet
Composite Panel (Outer Wall & Inner Wall: Coloured Steel Plate, Insulation: Phenolic Foam Thickness = 40)
Composite Panel (Outer Wall & Inner Wall: Coloured Steel Plate, Insulation: Styrene Foam Thickness = 25)
Hardened Wood Chip Cement Board (Thickness = 18)
Floor Paint Finish
Structural Plywood (Thickness = 12)
Floor Paint Finish
Lighting Equipment
(Inverter Type) LED Light
57MS1: 3 units
75MS1: 4 units
32W (Inverter Type) LED Light
CT-54J: 3 units
CT-72J: 4 units
CT-90J: 5 units
Electrical Equipment
Ventilator Fan (10cm, 20cm)
Single Phase 3 Wire, Earth-leakage Circuit Breaker (30A)
Branch Circuit Breaker (20A x2)
Ventilator Fan (20cm)
Single Phase 3 Wire, Earth-leakage Circuit Breaker (30A)
Branch Circuit Breaker (20A x2)
Floor Surface Load Capacity
295kg / m2
* Please consult us beforehand if you wish to use or install heavy objects.
295kg / m2
* Please consult us beforehand if you wish to use or install heavy objects.
Allowable Snowfall Amount
57MS1: 100cm
75MS1: 70cm
Standard: 50cm
Gross Weight
57MS1: Approx. 1690kg
75MS1: Approx. 2240kg
CT-54J: Approx. 1530kg
CT-72J: Approx. 1950kg
CT-90J: Approx. 2500kg
* These specifications are based on rental units in Japan.

** Dimensions are in millimeters