Fukuoka-based Housing Developer Ideahaus Makes First Entry into Kanto Region! New Store to Open in Matsudo City, Chiba Prefecture in July 2026, Accelerating Kanto Expansion and Aiming for ¥10 Billion in Sales

Ideahaus Co., Ltd. (CEO: Osamu Ito, Headquarters: Hakata Ward, Fukuoka City, Fukuoka Prefecture), which develops and sells ready-built houses in Hakata Ward, Fukuoka City, will open a new store, "Matsudo Store," in Matsudo City, Chiba Prefecture on July 1, 2026. In the milestone year marking its 20th anniversary since its founding on October 2, 2007, the company will establish its first base in the Kanto region and launch its flagship brands "Ideahaus Court," "Ideahaus Cube," and "Ideahaus Casa." Against the backdrop of rising demand for newly built detached houses and population inflow into the Tokyo metropolitan area, the company will cater to the housing needs of families, primarily those in their 20s to 40s. Ideahaus will offer housing that combines the design and livability cultivated in Fukuoka in Chiba Prefecture.

Leveraging the housing development expertise cultivated since its founding, Ideahaus will embark on a new challenge in the Kanto market.

[Chiba Prefecture Continues to See Net Inflow of Population, Expanding Demand for New Detached Houses]

According to the "Report on the Basic Resident Register Population Movement" by the Ministry of Internal Affairs and Communications, Chiba Prefecture has consistently been one of the Kanto region's leading prefectures with a net inflow of population, with an estimated net inflow of approximately 18,000 people in 2025.

Matsudo City, in particular, is seeing an increase in families due to its excellent accessibility to central Tokyo and its favorable environment for raising children. The "Housing Starts Statistics" by the Ministry of Land, Infrastructure, Transport and Tourism show a recovery trend in the number of new housing starts in the Kanto region, with the detached housing market also showing steady performance. In addition to this market environment, Ideahaus focused on the many similarities between the major cities in Chiba Prefecture and the Fukuoka metropolitan area in terms of population size, urban structure, and housing demand characteristics, leading to the decision to open the Matsudo store as a base for business expansion in the Kanto region.

References: - Ministry of Internal Affairs and Communications, Report on the Basic Resident Register Population Movement https://www.stat.go.jp/data/idou/ - Ministry of Land, Infrastructure, Transport and Tourism, Housing Starts Statistics https://www.mlit.go.jp/statistics/details/t-jutaku-2_tk_000002.html

[About the New Ready-Built Housing "Ideahaus" Series]

As times change, the living environments surrounding us continue to evolve. As a result, people's lifestyles and what they seek in housing are also diversifying. What Ideahaus values is the "customer's perspective." We believe that homes that enrich diverse lifestyles with plus-alpha ideas and cater to individual lives are the form of housing required for the future. With this in mind, we aim for brands that are excellent in design, high-quality, and make life more exciting, and we offer three brands tailored to diverse lifestyles.

[Ideahaus Court]

We provide high-grade new ready-built houses with plus-alpha spaces that deepen family time, ensuring that families feel comfortable throughout their lives and that memories of those rich times continue. To achieve this, we pursue quality from various perspectives, from land acquisition to design, construction, handover, and even after moving in.

≪ Ideahaus Court Brand Introduction: https://ideahaus.co.jp/court/ ≫

[Ideahaus Cube]

These are lifestyle-oriented detached ready-built houses characterized by their sharp, timeless cube facade design and highly flexible, adaptable floor plans.

They come furnished with furniture from an interior shop, offering a total lifestyle coordination.

≪ Ideahaus Cube Brand Introduction: https://ideahaus.co.jp/cube/ ≫

[Ideahaus Casa]

With the concept "Just right is comfortable," these detached ready-built houses are designed to enjoy urban living freely and comfortably. They incorporate numerous ideas to make daily life smart and comfortable, such as highly designed kitchens that are also beautiful as interior elements, stress-free storage planning, and nooks that provide solace for family life. They realize a "just right" life for families through smart housing creation.

≪ Ideahaus Casa Brand Introduction: https://ideahaus.co.jp/casa/≫

[Future Development]

In the housing industry, demand is predicted to continue concentrating in areas with high population density. The population of the Tokyo metropolitan area is expected to maintain high housing demand in the future, and the need for high-quality detached houses is likely to persist.

Ideahaus Co., Ltd. positions 2026, the 20th anniversary of its founding in 2007, as the start of a new growth stage. With the opening of the Matsudo store as the first step in its Kanto expansion, the company aims to become a company with ¥10 billion in sales by 2028.

Moving forward, Ideahaus will promote business expansion within Chiba Prefecture and the Kanto region, aiming for further improvement of customer service and contribution to the community.

[Comment from CEO Osamu Ito]

Since our founding in 2007, we have sincerely dedicated ourselves to home building in Fukuoka. We are extremely pleased to take this first step into the Kanto region in our 20th anniversary year. The reason for choosing Matsudo City is not only its promising housing market but also the "livability" and "excellent environment for raising children" that we felt, which are similar to the Fukuoka metropolitan area.

We are not just a company that builds houses. We aspire to be a company that provides homes that enrich the lives of the families who live in them. The opening of the Matsudo store is not a goal, but a new beginning. We will steadily build upon our challenges in the Kanto region, aiming to become a company trusted by local customers.

[Ideahaus Co., Ltd. Matsudo Store]

〒270-0034

1F, Forest Yama-ki, 1-243 Shin-Matsudo, Matsudo City, Chiba Prefecture

TEL: 047-343-5500 FAX: 047-343-5505

[Ideahaus Co., Ltd.]

<Business Activities>

Ready-built housing business

Real estate distribution and consignment sales business [Brokerage/Sales Agency]

Renovation and remodeling business

<Head Office Location>

3F, Hakata Gion Bldg., 4-2 Gion-machi, Hakata Ward, Fukuoka City, Fukuoka Prefecture

<Representative>

President and CEO Osamu Ito

<Capital Stock>

30 million yen

<Established>

October 2007

<HP>

https://www.ideahaus.co.jp

<Instagram>

https://www.instagram.com/_ideahaus?igsh=NnZ2eW5lOW9kam1j

<YouTube>

https://www.youtube.com/channel/UC1DKdiblo_vYSpiT5_-TxuQ

[Affiliated Company: Ideahaus Real Estate Co., Ltd.]

<Business Activities>

Exclusive sales business for the Ideahaus series

Real estate distribution business (brokerage)

Real estate consignment sales business (sales agency)

<Head Office Location>

1F, Nishijin ROOMS, 3-17-18 Joshōsai, Sawara Ward, Fukuoka City, Fukuoka Prefecture

<Representative>

President and CEO Masaru Takamatsu

<Capital Stock>

10 million yen

<Established>

May 2022

<HP>

https://ideahaus.co.jp/fudousan/