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Company name
積和グランドマスト株式会社
Website
https://grandmast.jp/
Start date
End date
Ticker
Listed market
Country
Japan
Business activities
住宅建設
リフォーム
不動産管理
サービス付き高齢者向け住宅の賃貸管理
高齢者向け住宅の運営・管理
住宅管理サービス
Head office
Chief executive
Capital
Employees (non-consolidated)
Employees (consolidated)
Related companies
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Company name
Group
Parent
Subsidiary
Customer
Supplier
Alliance
Bank
Shareholder
積水ハウスF東京
Group
Relationship graph
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News
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National Tax Agency basic information
Data sources
https://www.grandmast.jp/
https://www.grandmast.jp/search/
https://www.grandmast.jp/about/
News pages
Own domain
✅
Last updated
2026-09-21 18:10 (Model: ggml-org/gpt-oss-20b )