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Hinokiya is a Japanese custom-home builder and general contractor based in Yamanashi, serving Yamanashi, Nagano and Niigata with fully custom-designed wooden houses.

Last updated September 26, 2026

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Overview

Hinokiya (株式会社 檜家, Hinokiya Co., Ltd.) is a Japanese custom-home builder and general contractor headquartered in Showa-cho, Nakakoma-gun, Yamanashi Prefecture. The company was established on 11 January 2011 and is led by representative director Mitsuya Watanabe. Its core business is the design, construction and supervision of custom-built detached houses (注文住宅), together with housing renovation and total coordination of the living environment including furniture and interiors. The company operates primarily in Yamanashi and Nagano prefectures, with a branch in Matsumoto, Nagano, and model houses also in Niigata Prefecture. Hinokiya positions itself as a regional "architectural workshop" (建築工房) rather than a mass-production house manufacturer. Its stated philosophy is to create "comfortable living" (心地よい暮らし) suited to Japan's humid summers, distinct seasons, typhoons and earthquakes, describing the feeling of its homes as the comfort of shade under a tree. The company emphasizes "fully free design for every building" (全棟完全自由設計) carried out by its in-house design department, calculating light and airflow according to the characteristics of each building site to produce one-of-a-kind designs. Its portfolio includes natural-textured wooden homes, down-living layouts, skip-floor homes, simple modern designs, hotel-like single-storey houses, L-shaped plans, lofted homes, courtyard urban modern designs and cafe-style residences, typically in the 30-tsubo and 40-tsubo size ranges. As a licensed Japanese housing company, Hinokiya holds a Yamanashi Prefectural Governor construction business permit (general-8, No. 9547), a first-class registered architect office registration (No. 1-031995), a real estate brokerage licence (Yamanashi Governor (2) No. 2498) and registration with the Japan Housing Warranty Inspection Organization (JIO, No. A0302750). Its staff hold qualifications including first- and second-class registered architect, licensed real estate transaction specialist, second-class building construction management engineer and interior coordinator. The company reported capital of 20 million yen and 20 employees, and banks with Resona Bank Kofu Branch, Yamanashi Chuo Bank Showa Branch, Yamanashi Credit Union Kokubo Branch and Hachijuni Nagano Bank Murai Branch. Hinokiya's customer journey runs from model-house visits and consultations, through free planning, contract and coordination, to construction. It maintains several model houses, including the Yamanashi head-office model house and a Yamanashi structure model house in Showa-cho, the Matsumoto and Matsumoto-Muraimachi-minami model houses in Nagano, the Suwa model house in Suwa, and the Niigata model house at the NST Tsubame-Sanjo Housing Center. The company also publishes customer interviews and a staff blog as part of its marketing.

History

Hinokiya Co., Ltd. was established on 11 January 2011 in Showa-cho, Nakakoma-gun, Yamanashi Prefecture, as a custom-home builder and general contractor. From its founding it has focused on the design, construction and supervision of custom-built detached houses, alongside renovation and total coordination of living environments including furniture and interiors. The company is led by representative director Mitsuya Watanabe. Operating from its Yamanashi head office, Hinokiya expanded its service area into neighbouring Nagano Prefecture, opening a Matsumoto branch at 1-14-4 Muraimachi-minami, Matsumoto. It also established a presence in Niigata Prefecture through a model house at the NST Tsubame-Sanjo Housing Center in Tsubame. Across these markets it built a network of model houses — the Yamanashi head-office and structure model houses in Showa-cho, the Matsumoto and Matsumoto Muraimachi-minami model houses, the Suwa model house in Suwa, and the Niigata model house — supported by a reservation-based visit system. The company's approach centres on "fully free design for every building" (全棟完全自由設計) produced by an experienced in-house design department. Rather than offering standardised plans, Hinokiya calculates how light enters and how air flows according to each building site's characteristics to create one-of-a-kind homes. Its stated philosophy is to realise "comfortable living" (心地よい暮らし) in Japan's humid, seasonally varied and disaster-prone climate, describing the feeling of its homes as the comfort of shade beneath a tree. Its completed works span natural wooden textures, down-living layouts, skip floors, simple modern and hotel-like single-storey designs, L-shaped plans, lofts, courtyard urban modern homes and cafe-style residences, mostly in the 30-tsubo and 40-tsubo ranges. As a licensed Japanese housing business, Hinokiya holds a Yamanashi Prefectural Governor construction business permit (general-8, No. 9547), a first-class registered architect office registration (No. 1-031995), a real estate brokerage licence (Yamanashi Governor (2) No. 2498) and JIO registration (No. A0302750). Its staff include first- and second-class registered architects, licensed real estate transaction specialists, second-class building construction management engineers and interior coordinators. The company reported capital of 20 million yen and 20 employees, and maintains banking relationships with Resona Bank Kofu Branch, Yamanashi Chuo Bank Showa Branch, Yamanashi Credit Union Kokubo Branch and Hachijuni Nagano Bank Murai Branch. Its customer process runs from model-house visits and consultations through free planning, contract and coordination, to construction.

  • 2011

    Hinokiya Co., Ltd. established on 11 January in Showa-cho, Nakakoma-gun, Yamanashi Prefecture.

  • Matsumoto branch opened in Matsumoto, Nagano Prefecture.

  • Niigata model house established at the NST Tsubame-Sanjo Housing Center.

Products and positioning

Regional custom-home builder and architectural workshop offering fully free design and comfortable, climate-adapted wooden homes in Yamanashi, Nagano and Niigata.

  • Fully custom-designed houses (全棟完全自由設計)

    One-of-a-kind homes designed by Hinokiya's in-house design department, with light and airflow calculated for each building site.

  • Natural wooden-texture homes

    Homes that make the most of wood texture in a natural taste.

  • Down-living homes

    Homes arranged around a down-living space.

  • Skip-floor homes

    Homes with split-level skip floors.

  • Single-storey houses (平屋)

    Hotel-like single-storey homes.

  • L-shaped homes

    Homes with a neat L-shaped plan.

  • Lofted homes

    Homes incorporating loft spaces.

  • Courtyard urban modern homes

    Urban modern homes arranged around a courtyard.

  • Cafe-style homes

    Homes wrapped in gentle sunlight with a cafe style.

  • Housing renovation

    Renovation services for existing homes.

  • Interior and furniture coordination

    Total coordination of the living environment including furniture and interiors.

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