Supporting Home Builders with 'Exclusive Sales Rights' for Single-Person Flat-Roofed Homes: YUIE PROJECT's 4th Product, 'YUIE SEAMLESS'

LIXIL Housing Research Institute Co., Ltd. will launch "YUIE SEAMLESS," a new flat-roofed home product for single individuals, on April 20, 2026. This product adopts an unprecedented exclusive sales system, limited to "5 companies per prefecture nationwide," for home builders across the country. It proposes a new business model that allows local home builders to grow stably without being caught in price competition in a shrinking housing market.

The new product "YUIE SEAMLESS," to be sold this time, is a product that allows local home builders to exclusively cultivate a new market for "flat-roofed homes for single individuals," a market that major house manufacturers have not yet entered. Currently, the number of new housing constructions in Japan is decreasing year by year, and many local home builders are facing a decline in customer acquisition and contract numbers. Furthermore, handling similar products to competitors in the vicinity leads to fierce price competition, and the difficult situation of "building good houses but struggling to make a profit" continues.

To solve this problem, "YUIE SEAMLESS" has the following three features:

1) Avoiding price competition with "limited to 5 companies per prefecture"
This product will be limited to 5 companies that can purchase it within the same region. This prevents competition for customers among neighboring home builders and allows them to have a "unique strength" that is not caught in price competition.

2) Targeting the expanding market for "flat-roofed homes for single individuals"
Currently, about 40% (38.0%) of households in Japan are single-person households, but there are almost no detached houses for single living in the market. We offer "compact flat-roofed homes of 16-19 tsubo" that resolve dissatisfaction felt in apartment living, such as noise and restrictions on pet ownership, thereby acquiring new customer segments.

3) A complete lineup that can accommodate any customer
By adding this "single-person home" to the "family-oriented homes" that home builders already have, they can aim to become the "No. 1 flat-roofed home builder in the region" that can meet any needs, from single individuals to families.

■ Comment from the person in charge
"We have created a system for local home builders to continue to be chosen in their communities without being exhausted by price competition with competitors. While supporting the rich lives of 'single individuals' whose demand is increasing, we want to create a new form of housing business that is adapted to the times, together with home builders."

The "YUIE PROJECT" has announced the first series "YUIE BOTANICAL," the second series "YUIE ATELIER," and the third series "YUIE BE MYSELF." By sequentially introducing new concept "YUIE homes" in the future, we will propose new forms of housing and sales methods that pursue personal time and space without compromise, in line with the diversifying modern lifestyles, and create an environment where small and medium-sized home builders nationwide can survive and continue building homes with confidence.

■ "YUIE SEAMLESS" Overview

1) Sales System
[Prefecture-specific, limited quota sales]
This is the first time in the YUIE series to adopt a "prefecture-specific, limited quota" sales system, with a limit of 5 companies per prefecture. This limits the number of neighboring builders handling the same product in the same commercial area, enhancing the advantage of exclusive sales of LIXIL Housing Research Institute's original housing product "YUIE SEAMLESS."

2) Product Overview
• Product Name: YUIE SEAMLESS
• Release Date: Monday, April 20, 2026
• Sales Area: Nationwide (YUIE PROJECT member store areas)
• Structure/Performance: Seismic resistance equivalent to Grade 3, Insulation equivalent to Grade 6
*Performance and structure are confirmed based on assumed conditions during the development stage. As it varies by region, seismic resistance Grade 3 may not be met depending on the plan and specifications selected by the customer. In areas with heavy snowfall, a proposal based on seismic resistance equivalent to Grade 1 may be made.
• Estimated Reference Price for Building Body:
　①FLAGSHIP MODEL: From 20 million yen (excluding tax) *Property price is for a total floor area of 62.93㎡ / 19.03 tsubo
　②STANDARD MODEL: From 15 million yen (excluding tax) *Property price is for a total floor area of 52.99㎡ / 16.02 tsubo
　*Varies by region and specifications. Prices are as of the April 2026 release.
　*Both ① and ② are calculated based on the building body price + incidental construction costs. Selling prices vary by member store.
・Product Lineup
This product offers two models, "FLAGSHIP MODEL" and "STANDARD MODEL," with different price ranges, providing choices that cater to lifestyle preferences and more realistic ease of living.
In addition, without changing the concept and plan, a rich variety of designs are available, allowing customers to choose their preferred design from multiple professionally supervised exterior (4 types) and interior (3 types) design patterns.
・Number of Plans: 2 types (East/West entrance, North entrance) *Floor plans differ
・Specifications: LIXIL products are used for main materials *Some specifications differ between FLAGSHIP and STANDARD

3) Details of New Product "YUIE SEAMLESS"

① Concept
The concept is "Life × Seamless Connection." Unpartitioned spaces seamlessly connect daily life. Light reaching straight from the sky acts as a comfortable bridge connecting the outside world and oneself. The boundaries between inside and outside, on and off, self and others, all melt away. It is a home where the richness of life and space quietly deepens as one feels the changing seasons and light.

② Target
The main target of "YUIE SEAMLESS" is active single individuals. It is intended for those who want to live a life that values habits for managing their own mood, guided by their mental condition, and those who want to enjoy independent alone time while also inviting close friends. It also anticipates large dogs/multiple pets, living with elderly parents, and living with one child.

③ Housing Market Trends
The household structure in Japan, which was dominated by "couples with children" from around 1980 to 2000, is now and in the future shifting to "single-person households." Reasons why single individuals choose detached houses are said to include dissatisfaction with dark and cold living spaces in multi-unit dwellings, strict restrictions on pet ownership, concerns about noise to upstairs/downstairs or neighboring rooms, and restrictions on DIY. Furthermore, one survey shows that about 70% of single women want their own home regardless of marriage. From these circumstances, we believe there is a need for detached houses for single individuals, both male and female.

■ "YUIE PROJECT" History
"YUIE" is a standardized design house developed by our company, a housing professional, and LIXIL, in response to diversifying lifestyles. The first series, "YUIE BOTANICAL" (released October 2024): Proposed a home that seamlessly connects indoor and outdoor spaces with the concept of "harmony with plants," where daily life and the place for plants become one.
The second series, "YUIE ATELIER" (released June 2025): Proposed a flat-roofed house that incorporates an atelier space for immersing oneself in hobbies and work into daily life, with the concept of "a flat-roofed house with an atelier to 'create' my own style."
The third series, "YUIE BE MYSELF" (released January 2026): Proposed a home that creates "time for oneself" by streamlining daily routines within easy reach, allowing one to live naturally at their own pace.

■ "YUIE SEAMLESS" FLAGSHIP MODEL | Overview

[Theme] Connection and Space
・Indoor and outdoor, daily life and leisure, are gently connected, starting from a courtyard accessible from three directions.
・While incorporating light and wind, it gently blocks outside views, maintaining a sense of security that opens inward.
・The circulating flow line creates time for gathering and time for oneself in everyday life.

[Exterior]
・Symmetrical roof shape with a courtyard in the center
・Perforated blocks, which also serve as a screen, are installed in front of the courtyard
・Minimal sashes on the exterior for security consciousness
・Four types of exterior designs can be chosen by changing the exterior wall material
・Composed of original design + Design Style

[Interior] *RELAX MODERN
・The sky can be seen from the open courtyard, allowing sunlight into the room
・There are no partitions, creating a seamless space that can be seen from end to end
・The floor level of the spaces adjacent to the courtyard is flat, and daily life unfolds around the courtyard
*In addition to RELAX MODERN, interior designs include COMFORT GRAIN, which focuses on natural textures, and QUIET NEST, which creates a cozy feeling of being enveloped with a sense of unity through subtle shades.

[PLAN | Floor Plan]
・Total floor area is 19.03 tsubo
・A flat-roofed house with a frontage of 6 ken and a depth of 4 ken
・A U-shaped flat-roofed house around the courtyard
・It is a block plan, and each block can be easily interchanged

■ STANDARD MODEL | Overview

[Theme] Nurturing Space
・By not over-completing it in advance, room for usage has been left.
・Based on high-performance basic specifications, it grows into a home that suits one's own style over time, with modifications made to suit one's life.

[Exterior]
・Follows the exterior concept of the FLAGSHIP model
・A practical sales model with reduced specifications and price
・Four types of exterior designs can be chosen by changing the exterior wall material
　(Original design + Design Style)

[Interior] *TIMELESS STYLE
・The sky can be seen from the high-side windows, allowing sunlight into the room
・There are no partitions, creating a seamless space that can be seen from end to end
・The sloped ceiling also follows the FLAGSHIP model
*In addition to TIMELESS STYLE, interior designs include INDUSTRIAL, which uses rough and dry-textured materials to create a clean and open atmosphere, and NORTHFOREST, which combines grayish-green accent colors reminiscent of Nordic trees with wood materials in a simple design to create a sense of warmth and gentleness.

[PLAN | Floor Plan]
・Total floor area is 16.02 tsubo
・A flat-roofed house with a frontage of 3.5 ken and a depth of 5 ken
・Space can be partitioned to one's liking by utilizing beams and storage shelves

■ "YUIE" Product Information
YUIE Product Series HP: https://www.yuieproject.jp/product/
YUIE Dedicated Inquiry Desk: https://www.lixil-jk.co.jp/contact-yuie/

◆Company Profile
・Company Name: LIXIL Housing Research Institute Co., Ltd.
・Representative Director and President: Nobuhiko Kajima
・Head Office Location: 1-1-1 Nishishinagawa, Shinagawa-ku, Tokyo 141-0033
・URL: [LIXIL Housing Research Institute Co., Ltd.] https://www.lixil-jk.co.jp/
　　　　[YUIE PROJECT]: https://www.yuieproject.jp/
・Business Activities:
As a member of LIXIL, which develops comprehensive housing and lifestyle-related businesses, including the manufacturing and sales of housing and building materials and equipment, and the operation of housing franchise chains. As a company responsible for operating housing franchise chain businesses, we operate three brands: Aiful Home, Fias Home, and GL Home, and operate one of the largest housing franchise chain businesses in Japan.