3×9m Dongji House Modular Home: A 27㎡ Rest Room with Toilet and Shower

For many projects, customers need more than a simple temporary shelter. They need a compact building that can provide a comfortable rest area, a private bathroom, good insulation, and stable structure for daily use. To meet this type of requirement, Dongji House designed a customized 3×9m modular home for a customer who mainly uses the unit as a rest room.

This modular house has a total area of 27 square meters. Although the size is compact, the layout is practical. The room includes a rest area, one toilet, and one shower area, making it suitable for workers, staff, site users, or private landowners who need a convenient space for both resting and washing.

Compared with traditional construction, a Dongji House modular home can be produced in advance, transported to the project site, and installed more efficiently. It is a flexible solution for construction sites, farms, camps, resorts, factories, mining areas, temporary offices, and many other outdoor or semi-permanent applications.

Why Choose a 3×9m Modular House?

A 3×9m modular house offers a good balance between usable space and transport convenience. The 3-meter width keeps the unit suitable for modular production and delivery, while the 9-meter length provides more interior space than many standard compact prefab units.

For this project, the customer wanted a rest room with bathroom functions. A smaller unit may not provide enough space for both a comfortable rest area and a separate toilet and shower. The 27㎡ layout makes it possible to divide the space more clearly and use the room more comfortably.

This size can also be customized for different purposes. Besides a rest room, it can be used as a small office, worker accommodation, site dormitory, farm cabin, garden room, guard room, guest room, or portable bathroom unit.

Triangular Roof Design for Better Rainwater Drainage

One of the most visible features of this Dongji House modular home is the triangular roof structure. The roof is higher in the middle and lower on both sides. This design helps rainwater slide down quickly, reducing the chance of water staying on the roof surface for a long time.

For outdoor modular houses, roof drainage is an important detail. A flat or poorly designed roof may collect rainwater, especially in rainy seasons or humid areas. The triangular roof of this 3×9m modular house improves water drainage and gives the building a more distinctive appearance.

The roof also has a 10cm extension at the edge. This detail makes the house look more complete and adds a stronger design feeling. At the same time, the extended roof edge can help reduce direct rain exposure on the wall connection area.

The exterior roof and wall metal sheet is black, giving the house a modern and strong visual effect. The interior metal sheet is white, which makes the inside space look cleaner, brighter, and more comfortable for daily use.

100mm Polyurethane Wall Panels for Better Insulation

Insulation is one of the most important parts of this Dongji House modular home. The wall uses 100mm thick polyurethane panels. Polyurethane panels are widely used in modular buildings because they help reduce heat transfer between the inside and outside of the house.

For customers in hot areas, the 100mm polyurethane wall panels can help reduce the influence of outdoor heat. For customers in cold areas, the insulation layer can help slow down indoor heat loss. This makes the room more comfortable than a simple metal structure without insulation.

The bottom of the house also uses polyurethane material to isolate temperature from the ground. This is an important detail because heat and cold can also transfer through the floor. With insulated walls and an insulated bottom structure, the house can provide better indoor comfort in different climates.

Of course, the actual indoor temperature also depends on local weather, door and window quality, ventilation, and whether the customer installs an air conditioner or heater. Dongji House can recommend suitable configurations according to the customer's project location and usage needs.

Optional Electricity, Air Conditioner, and Water Heater

Different customers have different requirements for modular homes. Some customers only need a simple rest room, while others need a more complete living-support space. For this 3×9m modular house, Dongji House can configure electrical materials, lighting, sockets, air conditioner, water heater, bathroom equipment, and other facilities according to customer needs.

For a modular home with toilet and shower, a water heater is a very practical option. It allows users to take a warm shower after work or during cold weather. If the project is located in a hot climate, an air conditioner can make the rest room much more comfortable.

Electrical configuration is also important if the unit is used as a site office, accommodation room, guard room, or commercial service space. Dongji House can adjust the internal configuration based on the final use of the house, making the modular unit more suitable for real project conditions.

Structural Challenge of a 9-Meter Modular House

Although a 9-meter-long modular house provides more usable space, it also creates a structural challenge. For prefabricated houses, longer length means the middle section requires stronger support. If the structure is not reinforced properly, the long beams may not have enough support, especially when the house faces strong wind or long-term outdoor use.

To solve this problem, Dongji House added two wind-resistant columns between the upper and lower long beams. These columns are designed to support the long beams and help share wind pressure. When wind becomes stronger, this reinforcement helps improve the stability of the whole structure.

This detail shows how Dongji House designs modular homes based on real application needs. The purpose is not only to make the house look good, but also to make sure the structure is practical, stable, and suitable for outdoor use.

Service Life of Dongji House Modular Home

The service life of this Dongji House modular home is usually around 10 to 15 years. The actual service life depends on several factors, including installation environment, climate conditions, frequency of use, maintenance, and whether the house is used in coastal, rainy, windy, or high-humidity areas.

To keep the house in good condition, customers should check the roof, drainage area, wall joints, door and window seals, bathroom waterproofing area, and metal surface regularly. Good maintenance can help extend the usable life of the modular house and keep it stable for long-term use.

For customers who plan to use the unit for worker accommodation, rest room, site office, or temporary living space, Dongji House can also provide suggestions based on local climate and project requirements.

More Applications for a 3×9m Modular Home

Although this project is used as a rest room with toilet and shower, the same modular house can be adapted for many other applications. With flexible interior layout and optional equipment, a 3×9m modular home can be used as:

● Worker rest room

● Construction site office

● Staff accommodation

● Guard room

● Farm house

● Garden room

● Camp cabin

● Guest room

● Portable shower room

● Smll shop or service room

● Temporary living unit

● Batroom and changing room

This flexibility is one of the biggest advantages of modular housing. Customers can choose the size, layout, wall material, roof style, bathroom configuration, electrical system, air conditioner, water heater, and other details according to their own needs.

More Modular Housing Options from Dongji House

Dongji House provides different types of prefabricated housing solutions, including detachable houses, modular houses, folding houses, expandable houses, and double-floor designs. Whether customers want to use the house by themselves or purchase modular homes for resale, Dongji House can offer suitable options.

For customers who need fast installation and flexible space, modular houses are a practical choice. For customers who want easier transportation and quick setup, folding houses or expandable houses may be more suitable. For larger projects or higher space requirements, double-floor designs can also be considered.

Dongji House can match different house types according to project budget, land size, transportation conditions, climate, and final use.

Why Choose Dongji House Modular Home?

Choosing Dongji House means choosing a modular housing supplier that understands both product structure and customer application. In this 3×9m modular home project, Dongji House considered not only the size and layout, but also roof drainage, insulation performance, bathroom use, optional equipment, and structural reinforcement.

The 100mm polyurethane wall panels help improve insulation. The polyurethane insulated bottom helps reduce temperature transfer from the ground. The triangular roof supports faster rainwater drainage. The two wind-resistant columns strengthen the 9-meter-long structure. The toilet, shower, water heater, air conditioner, and electrical options make the unit more convenient for daily use.

For customers looking for a modular home with toilet and shower, a prefab rest room, a portable site office, or a customized living-support unit, Dongji House can provide practical and flexible solutions.

This 3×9m Dongji House modular home is a good example of how a compact 27㎡ space can be designed for comfort, function, insulation, and structural stability.

If you are interested in Dongji House modular homes, detachable houses, folding houses, expandable houses, or double-floor prefab house designs, please contact us(www.dongjihouse.com) for more details and customized solutions.