Manufacturing of Mobile Homes | Cumberland Japan Inc.

We found mobile homes in the U.S. in 1994, and we started manufacturing in Japan in 2004. We develop and review our products day by day, aiming at "high quality and stylish products".

We put importance on "safety and comfortableness", we will respond to various sizes of products and also develop a new model.

All of the staff make all possible efforts to deliver our best products to you.

Please enjoy Cumberland series.

Last Updated: October 17, 2017

June, 2017: Our new factory started operation.

We held a completion ceremony of the new factory and started operation. The factory is located right next to the head office, in Nagano industrial park.
By the operation of the new head office factory, productive capacity went up to 500 units a year.

* Trailer houses are "factory production type transportable shops/houses" that are manufactured to meet certain structural requirements. Our products satisfy the structure standards of Japan Recreational Vehicle Importers' Association.

the head office factory

24-meter booths

12-meter booths

A completion ceremony was held.

House type models: Please consult us for your requests on interior design, finish, fixtures and fittings, etc.


a kitchen, flooring, curtains, etc.	loft and stairs, lighting fixtures, etc.	window sash, bracket lights	entrance space, entrance lighting	furniture, air-conditioner

Shop type models: Please consult us for designing and manufacturing meeting to your requests.

11-meter long ramen shop	kitchen of a ramen shop	interior construction	making of a counter and partition wall	kitchen and kitchen equipment
special structure + barrier-free	waterproofing	a roof which receives sunlight	installation of shower booths	a shower room model for handicapped persons (for sports facilities)

Basic structure: Every products are made carefully at the factories in Nagano.

accurate measurements	and building work	orderly floor structure	waterproof sheet	the factory in Ueda
sturdy truss structure	double-layered floor structure	fiber-cement siding	exterior painting	vinyl siding
resin sash windows with grids and argon gas fill	double-glazed windows	Eaves and porch lights are made in consideration of transporting.

Basic of log structure

It uses timbers with few distortions.

interior of a log model

It is built by the notch construction method.

It is constructed with consideration of settling of logs.

We place importance on finish retaining feeling of logs.

Cumberland Japan's premium chassis

We use premium chassis that we developed with our long time experience of manufacturing trailer houses. They are sturdy and they secure high stability when installed.

Stock of chassis:
Chassis in various sizes are stocked.

Premium chassis:
We started from development of special chassis.

Premium chassis:
They are flexible and durable.

Chassis of US standard:
Distortion could occur if bearing walls are heavy.

Trial chassis made in China: They had problems in weight, strength of welded joints, load capacity of axles and tires.

Patent application: Barrier-free for trailer house

March, 2014, patent acquired

We developed a special processing technique for chassis.

It enables to eliminate a level difference between a bathroom and an outside floor.

a level difference at a bathroom door, in a standard model

the floor where a level difference was eliminated

Patent application: Floor heating system for trailer house

September, 2013, utility model aquired

floor heating for trailer house

It makes the indoor comfortable even in a cold season, and reduces air drying than using an air-conditioner.

- utilization of hinoki cypress (utilization of local-grown materials),
- development of new models,
- special roof, etc.,
we are working on developing products.

Visited to a factory of a US trailer house manufacturer. (2007)

To learn about manufacturing of a US manufacturer and goodness of US products, twelve staffs in charge of each section, such as structural design, electrical works, painting, housing equipment, etc., visited a US trailer house manufacturer. We discussed about each section, in consideration of difference of environment and culture between the US and Japan.

an exhibition in the US (2007)	staff meeting	a discussion to make better products	debating to understand	construction of a roof
making of a framing	installation of insulation material for floor	mass production at a factory	inspection and cleaning	a commemorative photo

Manufacturing in the United States (in Los Angeles, around 2002)

With our experience in manufacturing products for Japan with the US makers, we had manufactured products that surpassed the US manufacturing standards and we had shipped them to Japan.

Manufacturing at Los Angeles	R-13 insulation	an American carpenter	stylish windows	belts uniquely applied to trailer houses
structure that satisfies ANSI 119.5 standard	paneling	siding finish	caulking and exterior painting	Finished products were shipped to Japan.