Development Planning Institute Inc. (Japan)

Development Planning Institute Inc. (Japan), known by its Japanese name Kabushiki Kaisha Kaihatsu Keikaku Kenkyusho and the brand name Kaiken, is a comprehensive construction consultancy headquartered in Mito, Ibaraki Prefecture, Japan. Founded in March 1985, the company has built its business around supporting regional development through planning, design, and consulting services for social infrastructure. Its work covers roads, parks, water supply and sewerage systems, and land development projects such as station-front plazas, residential estates, apartment developments, industrial parks, and golf course design. The firm positions itself as a community-rooted consultant that understands local characteristics and contributes to safe, secure, and livable communities. Kaiken's core strength is land development, which the company describes as work that remains in a place for a long time and supports the safety and security of local life. The company operates primarily in Ibaraki Prefecture, with its head office in Mito and additional offices in Hitachinaka, Kasama, Chikusei, Hitachiota, Inashiki, Ibaraki Town, Tokai, and Kita-Ibaraki, as well as a Tokyo office in Taito Ward. It is registered with Japan's Ministry of Land, Infrastructure, Transport and Tourism as a construction consultant, surveyor, compensation consultant, and geological surveyor, and operates a first-class architectural design office. The firm employs a range of licensed engineers, including professional engineers in urban and regional planning, roads, steel structures and concrete, soil and foundations, and water supply and sewerage. As a private company with capital of 60 million yen, Kaiken remains independent and is not listed on a stock exchange. Its leadership includes Representative Director and Chairman Shinobu Inoue and Representative Director and President Hideki Muto. The company is a member of several industry associations, including the City Planning Consultants Association, the Ibaraki Prefectural Construction Consultants Association, and the Japan Compensation Consultants Association. Through its planning and design work, Kaiken contributes to the physical transformation of communities, helping to shape the maps of the places where people live.

Development Planning Institute Inc. was established in March 1985 in Mito City, Ibaraki Prefecture, as a design company supporting regional development. From its founding, the firm has been involved in numerous development projects, building expertise in planning and design for social infrastructure. In March 1988, it opened a Tokyo office in Taito Ward, expanding its reach beyond Ibaraki. The company's early work focused on the planning and design of roads, parks, water supply and sewerage systems, and land development, including station-front plazas, residential estates, apartment developments, industrial parks, and golf courses. In February 2013, Kaiken significantly expanded its regional presence by opening four offices: Inashiki, Chikusei, Hitachiota, and Hitachinaka. This was followed by the opening of the Ibaraki Town office in April 2018 and the Kasama office in August 2019. In April 2025, the company opened the Tokai and Kita-Ibaraki offices, further strengthening its coverage of Ibaraki Prefecture. Throughout its history, Kaiken has maintained its headquarters in Mito and has continued to emphasize its role as a community-rooted consultant, leveraging local knowledge and technical expertise to contribute to safe and secure living environments. The company has also developed a strong technical foundation, employing licensed engineers in various fields and maintaining registrations with the Ministry of Land, Infrastructure, Transport and Tourism as a construction consultant, surveyor, compensation consultant, and geological surveyor. It operates a first-class architectural design office and is a member of several industry associations. As of the 2020s, Kaiken remains a private company with capital of 60 million yen, led by Representative Director and Chairman Shinobu Inoue and Representative Director and President Hideki Muto.

• 2025

  Tokai and Kita-Ibaraki offices opened.

• 2019

  Kasama office opened.

• 2018

  Ibaraki Town office opened.

• 2013

  Inashiki, Chikusei, Hitachiota, and Hitachinaka offices opened.

• 1988

  Tokyo office opened in Taito Ward, Tokyo.

• 1985

  Company established in Mito City, Ibaraki Prefecture.

A community-rooted comprehensive construction consultant supporting regional development through planning and design of social infrastructure.

• Construction consulting

  Planning, design, and consulting services for social infrastructure.

• Land development

  Core strength: planning and design for residential estates, industrial parks, and station-front plazas.

• Surveying and geological surveying

  Registered services for land and geological surveys.

• Compensation consulting

  Consulting services related to land acquisition and compensation.

• Architectural design

  First-class architectural design office services.

1. 1株式会社開発計画研究所 | カイケンは、地域を支える総合建設コンサルタントです。kaiken.co.jp
2. 2会社案内 | 株式会社開発計画研究所kaiken.co.jp
3. 3アクセス | 株式会社開発計画研究所kaiken.co.jp
4. 4会社概要 | 株式会社開発計画研究所kaiken.co.jp
5. 5Development Planning Institute Inc. (Japan) - Wikidatawikidata.org