Company history

Hanawa Keiji founded KI Planning in November 1990 in Honjo, a town of some 80,000 on Saitama’s border with Gunma. The business was the ordinary one of a provincial agency — buy land, put a house on it, sell the pair — worked through local connections. Hanawa became president in 1991 and converted the firm to a joint-stock company in 1993.

What made the company unusual came next. Building work had been subcontracted, which meant that cost and schedule were in someone else’s hands — fatal for a business whose margin on a cheap house is thin to begin with. In February 1994 Hanawa set up Granville Home to build the houses himself, renamed KI Corporation in 1998. A sales company followed in 1997 and an after-sales maintenance company in 2002. Within a little over a decade a small group in a provincial town covered land acquisition, construction, sales and maintenance without leaving the family.

The pieces were then folded back together. In December 2005 the parent took the name KI-Star Real Estate, unifying a scatter of subsidiaries under one brand; the construction company and another affiliate were absorbed in August 2006, and five more companies in a single merger in May 2007. Consolidating decision-making in one entity sped up the link between land, build and sale — and prepared an organisation that could be listed. By then the target customer was already defined: the first-time buyer in a household earning ¥3m to ¥5m a year, a band the large housebuilders barely served.

In August 2009, with the housing market still cold after the financial crisis, KI-Star launched Hanamaru House — a custom-build brand for buyers the industry had left to the rental market. The order of decisions is what matters: the income band was chosen first, the price of ¥8.7m for the house itself was derived from it, and more than a hundred standard plans existed to defend that price. Free-design work was kept in a separate brand so that two different customers would not be chased with one product.

Growth was national in ambition long before it was national in fact. A first franchise agreement with Yoka Town in Kyushu came in May 2015, and the partner was bought outright a year later — a pattern of testing a region through franchising, then taking it direct, that KI-Star would repeat.

In December 2015, twenty-five years after founding, the company listed on the second section of the Tokyo Stock Exchange, with consolidated sales of $304.2M (¥32bn) in the year to March 2015. Interviewed by Nikkei, Hanawa named his goal plainly: to sell more houses than anyone in Japan. The proceeds went where units come from — land, franchising, and the acquisition of other builders.

Promotion to the first section came in December 2016, barely a year after listing, opening the register to institutional investors. Sales for the year to March 2016 reached $319.8M (¥39bn) with recurring profit more than doubling; by the year to March 2019 sales passed $933.9M (¥103bn). A model built for a thin-margin price band was compounding faster than anything in its size class.

From 2017 the company added functions the way it had added them in the 1990s, only faster: Asahi Housing acquired to reach beyond north Kanto, KI Craft to train and employ its own tradesmen, KI Star Build for Kyushu subdivisions, and four brokerage companies in a single month in 2017 — bringing sales channels in-house to attack advertising and overhead rather than paying outside agents. A used-home business and a Nagoya operation followed in 2018, Kenshin in 2019, a recruitment and training company in 2020, and Casa robotics for standardised single-storey houses in the same year, a bet on factory-style cost structure in an industry short of labour.

Low rates and a pandemic-era rush to detached suburban housing then met a company built to supply exactly that. Prompt-K and Presto Home were acquired in quick succession over the winter of 2020–21, and in the year to March 2022 KI-Star posted record results: sales of $1.7B (¥184bn), recurring profit of $211.3M (¥23bn) and net profit of $133.9M (¥15bn). In six years from listing, sales had risen roughly sixfold and recurring profit about twentyfold.

The shares moved to the Prime Market in April 2022, into a market now asking a founder-run company about capital efficiency and disclosure. Conditions turned at the same time: the pandemic surge unwound, timber prices spiked, and rising rates squeezed gross margins. Hanawa’s answer was to keep buying regional builders — L Housing in Kansai in 2023, Shinyamagata Hometech in Tohoku and TAKASUGI in 2024 — spreading the business across regions and lifting store count toward two hundred. In April 2024 the group entered banking agency work through Yutaka Partners, taking the mortgage referral in-house and stretching the customer relationship from land purchase to loan.

The institutional apparatus arrived late but together. A mid-term plan to 2028, themed “a home of one’s own for everyone,” was published in November 2024; the first integrated report followed that December, restating the corporate creed. Abroad, KI-STAR Real Estate America was established to study the US market and take stakes in local builders, with seven development projects under way; an overseas subsidiary was consolidated in 2025 and the dividend raised from ¥230 to ¥235 a share, with a two-for-one stock split set for April 2026.

In the year to March 2025 sales reached a record $2.3B (¥343bn), but recurring profit of $99.7M (¥15bn) stood about 30% below the 2022 peak. Thirty-five years after a small agency opened in Honjo, KI-Star sells houses across most of Japan under one founder’s continuous leadership — and faces the question the expansion left behind: what the scale it bought will return in margin.