40+ beautiful, modern 1-storey house models, leading the trend in 2026

One-storey houses are becoming the preferred choice of many modern families thanks to 1 outstanding advantages: Flexible living space that is easy to customize, optimized construction and operating costs, easy maintenance with 6% lower cost than multi-storey houses, ensuring safety for all family members, suitable for medium and large land funds, and easy to add floors in the future when needed.

Kosmos' research on 350+ actual level 4 houses shows that there are 10 main classifications including: 1-storey house with Japanese roof, Thai roof, flat roof, sloping roof, garden house, 1-storey 1-attic, modern, neoclassical, with mezzanine and L-shaped.

Regarding construction costs, according to Kosmos' research in the first quarter of 2025, materials account for 40-70% of the total cost, with the unit price of raw construction and finishing labor ranging from 3-3,5 million VND/m² (rough construction) to 5-6 million VND/m² (full package). The total cost for a 100m² house is usually around 500-800 million VND depending on the level of investment and complexity of the design.

When designing a level 4 house, it is important to note 5 important factors: Choosing a suitable architectural style, scientifically arranging the floor plan, prioritizing durable building materials, calculating a reasonable budget and considering feng shui factors. Kosmos Vietnam is considered a reputable supplier of interior and exterior decoration materials with a 10.000m² warehouse system capable of supplying both civil projects and large-scale works.

Why is one-story house design widely popular?

In the context of increasingly diverse housing needs, 1-storey houses still maintain their position as a priority choice for many modern families thanks to 6 major advantages:

1. Flexible, customizable living space: The design of a 1-storey house creates ideal conditions for homeowners to be flexible in interior arrangement, while making good use of natural light and ventilation.2. Optimize construction and operating costs: Compared to multi-storey houses, single-storey houses do not require deep foundations or complex load-bearing columns. As a result, construction, material and labor costs are significantly reduced.3. Easy maintenance and repair: A 1-storey house has a simpler technical system and structure, so the process of checking, maintaining or renovating the living space is also faster and more economical.

“Single-storey homes have approximately 1% lower long-term maintenance costs due to their simpler construction, which does not require complex stair, elevator, or roof maintenance.” – Canadian Mortgage and Housing Corporation (CMHC, 12).

4. Ensure safety for all members: Eliminating stairs in the design increases safety when moving around the house for the elderly and children.5. Suitable for medium and large land funds: In suburban areas where land is abundant, the 1-storey house model maximizes land use efficiency.6. Easy to upgrade floors in the future: When usage needs change or financial conditions improve, expanding to a 2-storey house is completely feasible without having to demolish the original foundation or frame.

40+ beautiful, impressive and modern 1-storey house models 2026

According to Kosmos' research on 350+ actual level 4 houses, there are 10 classifications including: 1-storey house with Japanese roof, Thai roof, flat roof, sloping roof, garden house, 1-storey 1-attic, modern, neoclassical, with mezzanine, L-shaped.

Here are 40+ 1-storey house models that Kosmos has evaluated as both beautiful and fully meeting the living needs of modern families:

1-storey Japanese roof house

With a gently sloping roof design inspired by traditional Japanese architecture, this house style creates a harmonious whole between elegant beauty, soft lines and modern spirit. Not only meeting aesthetic needs, 1-storey Japanese roof house also demonstrates the connection of East Asian culture with contemporary lifestyle.

1-storey house with Thai roof

The 1-storey Thai-roofed house is an architectural style that is marked by a steep roof, usually ranging from 30 to 45 degrees, made up of many meticulously stacked layers of tiles. This type of roof helps the building drain water quickly, limits rain accumulation and is effective in waterproofing. In the past decade, the Thai-roofed house model has attracted many Vietnamese people thanks to the harmonious combination of aesthetics and functionality.

Flat roof house

With a flat, square and neat design, the flat-roofed house is suitable for a dynamic, youthful lifestyle and emphasizes sophistication. Because the flat roof structure is often reinforced from the beginning, the homeowner can completely add more floors when wanting to expand the usable area. At the same time, the flat roof can also be used as a terrace, outdoor living area, small garden or laundry area for the family.

1-storey sloping roof house

The 1-storey asymmetrical roof house is a groundbreaking architectural choice with an asymmetrical sloping roof design that contributes to creating a strong visual impact. This type of roof helps drain water quickly, minimizing the risk of leaks in rainy weather conditions. In addition to its aesthetic value, the asymmetrical roof structure also allows the high ceiling area to be used as a mezzanine, storage space or even additional living space.

1-storey garden house

Instead of maximizing the area for construction, the 1-storey garden house prioritizes dedicating most of the land to trees, landscapes and outdoor relaxation spaces. This is also an ideal place to organize outdoor activities such as reading, drinking tea, or playing with children.

“Single-storey houses allow for open-plan design with surrounding gardens, creating a sense of closeness to nature – a trend that is becoming increasingly popular.” – Dezeen Magazine (UK, 2022).

1-storey house 1 tum

A 1-storey, 1-attic house is a type of house that has only one main floor and a loft built on top. Tum design Often combined with large windows or skylights, allowing air and light to circulate easily, bringing a pleasant, relaxing feeling to the occupants. The attic is also a place that can be customized into a worship room, reading room, storage room, or private relaxation area depending on the needs of each family.

Modern 1-storey house

The trend of modern 1-storey house design emphasizes practicality and minimalist beauty, eliminating unnecessary decorative details to focus on a comfortable living experience. This architecture focuses on flat surfaces, often shaped by clear lines, combined with large glass doors to take advantage of natural light.

Modern style prioritizes sustainable materials such as exposed concrete, steel, glass, industrial wood, and plastic wood. The common area for this type of 1-storey house is usually around 80-100m², enough to arrange 2 to 3 bedrooms, suitable for small families or young couples.

1-storey neoclassical townhouse

A neoclassical style 1-storey tube house is an ideal choice for homeowners who love the combination of traditional values ​​and modern spirit. This style inherits the classic beauty of European architecture, expressed through details such as balanced pillars, delicate carvings, and meticulously processed molding systems.

1-storey house with mezzanine

A 1-storey house with a mezzanine is a smart architectural solution, especially suitable for plots of land with limited construction area but still want to increase the usability. Instead of expanding horizontally or investing a large amount of money in building an additional floor, adding a mezzanine helps to effectively utilize the ceiling height to create more living space.

L-shaped 1-storey house

The L-shaped 1-storey house is a design with two perpendicular blocks, forming an open angle. Thanks to this unique structure, the L-shaped house offers the ability to flexibly separate functional areas, while opening up many approaches to natural light and wind.

How much does it cost to build a 1-storey house?

According to Kosmos research in the first quarter of 2025, the reference construction costs for a 1-storey house are as follows:

1. Material cost: Materials usually account for about 40 - 70% of the total cost. If you choose common materials, the cost of raw construction materials for 100m² is about 200 - 300 million VND. Basic interior installation such as paint, doors, electricity and water can add 50 - 100 million VND.
2. Cost of construction and finishing labor: For a 1-storey house, the unit price for the rough construction and finishing labor ranges from 3 to 3,5 million VND/m². If you choose a full construction package, this price increases to about 5 to 6 million VND/m². For example, a 100m² house can cost about 300 to 600 million VND depending on the level of investment.
3. Design and supervision costs: Some units offer free design if the homeowner signs a full construction contract. Construction supervision and management fees are usually 5-10% of the total construction cost.
4. Additional costs: Customers also need to consider construction permit fees (10 - 15 million VND), infrastructure connection costs (10 - 20 million VND) and a 5 - 10% contingency reserve to handle unforeseen situations.

In general, with the same area of ​​100m², a modern flat-roofed house usually has an investment of 500 - 700 million VND thanks to its simple structure and neat construction. A house with a complex roof system, requiring high techniques, the total cost can be up to 600 - 800 million VND.

Important note: Construction costs are not fixed but depend on 5 factors such as area, design style, location, materials used and level of completion. To know the actual cost, the homeowner needs to find out from the contractor, survey similar projects and prepare a reserve fund.

What to note when designing a level 4 house?

To ensure the project is both beautiful, durable and meets living needs, homeowners need to pay attention to the following 5 factors when coming up with ideas for their level 4 house:

1. Choose the right architectural style: Choosing a consistent style from the start will help the implementation process go smoothly and ensure overall aesthetics.
2. Scientific layout: The division of functional space needs to be done systematically with the advice of a professional architect. It is necessary to ensure that the house has all the basic living areas such as living room, kitchen, bedroom and bathroom.
3. Prioritize high quality building materials: The choice of materials not only affects the beauty but also determines the durability and longevity of the project. Homeowners should prioritize materials that are waterproof and have good insulation such as bricks, plastic wood, durable cement, tempered glass and galvanized steel.
4. Calculate a reasonable budget: It is necessary to have a detailed financial plan, including the cost of raw construction, interior finishing, labor and contingency.
5. Feng Shui elements in design: Feng Shui is an indispensable aspect in home design, especially for Asians.

Frequently asked questions about 1-storey house design

How many bedrooms can a 1-storey house have?

The number of bedrooms in a 1-storey house is not fixed but depends on the area of ​​the land, the needs of use and the layout of the floor plan. However, in reality, most of the popular 1-storey house designs today often have from 1 to 4 bedrooms to ensure the balance between function and common living space.

For large-scale projects, designed as garden villas or serving special needs (such as houses with many members, homestays or resorts), the number of bedrooms can be expanded to 5 or more, as long as it ensures ventilation, comfort and harmony in the overall architecture.

How to complete a 1-storey house that is beautiful, durable, and has a strong personal touch?

A 1-storey house brings comfort and intimacy, but to turn this type of construction into an ideal living space, the choice of finishing materials plays a decisive role. Only when choosing the right finishing materials, can the homeowner ensure both aesthetic, functional and durable factors.

Kosmos Vietnam currently offers a diverse range of material solutions, helping customers realize their ideas in a sophisticated and durable way over time:

1. Fluted panel, Nano, bamboo charcoal sheet, PVC Marble: Turn walls and ceilings into works of art.
2. Wood-plastic Composite: Finishing outdoor areas with durable color and no warping.
3. Laminate Flooring , and SPC interior plastic flooring: Brings a luxurious feeling, comfortable for daily use.

With a warehouse area of ​​up to 10.000m² and the ability to supply large quantities, Kosmos meets both civil and large-scale projects. Contact the hotline now Phone: 0932 067 388 Kosmos is always ready to support and advise on choosing materials that suit the needs and budget of customers.

>>> See more about Kosmos's material storage space:

In general, a 1-storey house not only scores points for its convenience and cost savings, but also for its flexibility in design to suit many different needs. No matter what architectural style you prefer, a 1-storey house is always a choice worth considering. Hopefully, with more than 40 beautiful, modern and inspiring 1-storey house models in the article, customers have found the right idea for their future home.