Sanposha Co., Ltd.
A Gunma-based comprehensive real estate company centered on Takasaki and Maebashi, handling new detached homes, brokerage, rental, purchase-and-resale, management and renovation.
Last updated September 29, 2026
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Overview
Sanposha Co., Ltd. (株式会社三方舎) is a Japanese real estate company headquartered in Takasaki, Gunma Prefecture. Its main office is at 909-3 Kamiodanaka-machi, Takasaki, and it operates additional branches in Shibukawa (Shibukawa-Kitagunma), Isesaki (Sawa-Isesaki) and an Ota-Kiryu office in Ota. The company presents itself as a comprehensive real estate operator rather than a single-service agency, covering sales and purchase brokerage, rentals, purchase-and-resale, building management and renovation proposals. Its stated core market is Takasaki and Maebashi, with listings and services extending across Gunma Prefecture, including Ota, Isesaki, Fujioka, Tamamura, Shibukawa, Kiryu, Kamisato and Tomioka. The company's name and philosophy are drawn from the Omi merchant principle of "sanpo-yoshi" — the three-way good of seller, buyer and society. Sanposha states that it aims to conduct business so that everyone involved benefits and to contribute to the local community. It argues that specializing only in sales, only in rentals or only in purchase-and-resale cannot produce the best proposal for a customer, and therefore offers a wide view spanning brokerage, purchase, management and renovation. Sanposha's product mix includes newly built detached houses sold under its own series names such as GRAFARE and Cradle Garden (クレイドルガーデン), as well as used homes, land, rental apartments and investment property. The company also markets renovation-completed used houses and condominiums, and rental detached houses. It advertises free and paid appraisal services, and it works with multiple transaction banks — including Gunma Bank, Ashikaga Bank, Towa Bank, Chuo Rokin, Hachijuni Bank and Shinonome Shinkin Bank — to help customers compare housing loans. Its stated approach is to avoid persistent sales pressure and to match the customer's own pace. As of the company profile on its website, Sanposha has capital of 5 million yen and six employees. It is licensed by the Gunma Prefectural Governor as a real estate transaction business (license no. Gunma (3) No. 7408) and is a member of the National Association for Real Estate Transaction Guarantee. The representative is Tomokazu Sugiyama. Business hours are 9:00–18:00, with Wednesdays as the regular holiday. The company is privately held and does not appear to be listed on a stock exchange.
History
Sanposha Co., Ltd. is a privately held Japanese real estate company based in Takasaki, Gunma Prefecture. The available official information does not state a founding year, so the exact date of establishment is not recorded here. The company's name and corporate philosophy are explicitly derived from the Omi merchant principle of "sanpo-yoshi" — the three-way good of the seller, the buyer and society. Sanposha states that it shares this philosophy and aims to conduct business so that everyone involved becomes happy, while contributing to the local community. From its base in Takasaki, Sanposha has expanded its operations across Gunma Prefecture. Its main office, Sanposha Takasaki Honten, is located at 909-3 Kamiodanaka-machi, Takasaki. It also operates a Shibukawa-Kitagunma branch at 1771-8 Shibukawa, Shibukawa City; a Sawa-Isesaki branch at 3532 Miyako-machi, Isesaki City; and an Ota-Kiryu office at 82-58 Ohara-machi, Ota City. All branches operate under the same real estate transaction business license issued by the Gunma Prefectural Governor (license no. Gunma (3) No. 7408). The company describes itself as a comprehensive real estate operator. It argues that specializing only in sales, only in rentals or only in purchase-and-resale cannot provide the best proposal for customers, and therefore it offers a wide range of services: brokerage for sales and rentals, purchase and resale, building management and renovation proposals. Its core market is Takasaki and Maebashi, but it states that it can introduce and show almost all properties in the surrounding area, including properties advertised by other companies. Sanposha develops and sells newly built detached houses under its own series names, including GRAFARE and Cradle Garden. Examples from its website include GRAFARE Unit 3 in Shimotakase, Tomioka City (4LDK, 103.50 m²) and GRAFARE Unit 2 in Sekine-machi, Maebashi City (4LDK, 110.13 m²), as well as Cradle Garden units in Ota City. It also handles used homes, land, rental apartments and investment properties, and offers renovation-completed used houses and condominiums. The company provides both free and paid appraisal services. Its paid appraisal is aimed at owners of buildings such as detached houses, condominiums, stores, offices, warehouses and factories, and compares selling the property as-is with operating it as a rental business for several years. Sanposha also emphasizes support for housing loans, working with multiple transaction banks — Gunma Bank, Ashikaga Bank, Towa Bank, Chuo Rokin, Hachijuni Bank and Shinonome Shinkin Bank — and encourages customers to compare loan terms, interest rates, monthly payments, total payments, guarantee fees, handling fees and attached insurance. It states that it will advise customers who are worried about loan screening, including those with short employment history, low income, contract employment, self-employment, foreign nationality or past delinquency, on what to resolve for future borrowing. As of the company profile on its website, Sanposha has capital of 5 million yen and six employees. Its representative is Tomokazu Sugiyama. Business hours are 9:00–18:00, and the regular holiday is every Wednesday. The company is a member of the National Association for Real Estate Transaction Guarantee. It is privately held and does not appear to be listed on any stock exchange.
Products and positioning
A comprehensive, locally rooted real estate company in Gunma Prefecture that emphasizes the Omi merchant principle of sanpo-yoshi and offers a wide range of services from brokerage to renovation, rather than specializing in a single segment.
GRAFARE
A series of newly built detached houses sold by Sanposha, with examples in Tomioka City and Maebashi City.
Cradle Garden (クレイドルガーデン)
A series of newly built detached houses sold by Sanposha, with examples in Ota City.
Real estate brokerage
Brokerage for sales and rentals of detached houses, condominiums, land and other properties.
Purchase and resale
Purchase of real estate and resale, including renovation and resale.
Property management
Management of buildings and rental properties, including improving occupancy rates.
Renovation and reform
Renovation proposals and construction for buildings and rental properties.
Real estate appraisal
Free and paid appraisal services for real estate, including comparison of sale versus rental operation.
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