株式会社オープンハウスグループ

代表取締役に荒井正昭が就任 : 本社を東京都渋谷区に開設

オープンハウス株式会社設立。 : 荒井正明が代表取締役社長に就任。 : 東京都渋谷区に本社（"渋谷営業所"）を開設。

株式会社オープンハウス創業 : 代表取締役に荒井正昭が就任 : 本社を東京都渋谷区に開設

オープンハウス株式会社設立。 : 荒井正明が代表取締役社長に就任。 : 東京都渋谷区に本社（"渋谷営業所"）を開設。

Concluded a franchise agreement with “CENTURY 21 REAL ESTATE OF JAPAN LTD.”

「株式会社センチュリー21・ジャパン」とフランチャイズ契約を締結

Concluded a franchise agreement with "CENTURY 21 REAL ESTATE OF JAPAN LTD."

Commenced the sale of newly built single-family homes built by the Company itself through the subsidiary Open House Development Co., Ltd. (former company name: Souken Build Ltd.).

子会社・株式会社オープンハウス・ディベロップメント（旧社名：創建ビルド）において、自社新築一戸建て住宅の販売を開始

Registered as a First-class Architect Office [No. 46671 registered by the Governor of Tokyo].

Obtained the Special Construction License [No. (Special - 14) 117385 issued by the Governor of Tokyo].

Opened “Setagaya Sales Center” in Setagaya-ku, Tokyo.

Opened "Setagaya Sales Center" in Setagaya-ku, Tokyo.

東京都渋谷区内で本社（"渋谷営業所"）を移転。

東京都渋谷区内で本社（"渋谷営業所"）を移転。

本社（"渋谷営業所"）と"世田谷営業所"を統合し、総床面積300坪（10,675平方フィート）の道路沿いの営業所をグランドオープン。

本社（"渋谷営業所"）と"世田谷営業所"を統合し、総床面積300坪（10,675平方フィート）の道路沿いの営業所をグランドオープン。

Opened “Kinshicho Sales Center” in Sumida-ku, Tokyo.

Opened "Kinshicho Sales Center" in Sumida-ku, Tokyo.

建築物取引業免許証[番号（1）7349、国土交通大臣発行]を取得。

Opened “Sakura-Shinmachi Sales Center” in Setagaya-ku, Tokyo.

Opened "Sakura-Shinmachi Sales Center" in Setagaya-ku, Tokyo.

Opened “Mizonokuchi Sales Center” in Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture.

Purchased IB Net Co., Ltd. (former company name: Ito-pia Business Net Co., Ltd.) from Itochu Corporation, and entered the real estate financing business.

株式会社アイビーネット（旧社名：イトーピアビジネスネット株式会社）を伊藤忠商事株式会社より購入、不動産金融事業に進出

Opened “Akabane Sales Center” in Kita-ku, Tokyo.

Opened "Akabane Sales Center" in Kita-ku, Tokyo.

Commenced the sale of condominiums through Open House Development Co., Ltd.

株式会社オープンハウス・ディベロップメントがマンションの販売を開始

Opened “Nakano Sales Center” in Nakano-ku, Tokyo.

Opened "Nakano Sales Center" in Nakano-ku, Tokyo.

丸の内に「丸の内オフィス」を開設（本社の一部機能を移転）。

東京都千代田区丸の内に「丸の内事務所」を開設（本社機能を一部移転）

東京都千代田区丸の内に「丸の内オフィス」を開設（本社の一部機能を移転）。

Opened “Ikebukuro Sales Center” in Toshima-ku, Tokyo.

Opened "Ikebukuro Sales Center" in Toshima-ku, Tokyo.

中国上海市に株式会社オープンハウス・ディベロップメントの100％子会社として、旺佳建築設計諮詢（上海）有限公司を設立

Established Open House Realty & Investments, Inc. in California, U.S.A. as a wholly owned subsidiary of Open House Development Co., Ltd. : Established Wangjia Architectural Design Consulting (Shanghai) Co., Ltd. in Shanghai, China as a wholly owned subsidiary of Open House Development Co., Ltd.

米国カリフォルニア州に株式会社オープンハウス・ディベロップメントの100％子会社として、Open House Realty & Investments, Inc.を設立 : 中国上海市に株式会社オープンハウス・ディベロップメントの100％子会社として、旺佳建築設計諮詢（上海）有限公司を設立

Established Open House Realty & Investments, Inc. in California, U.S.A. as a wholly owned subsidiary of Open House Development Co., Ltd.

Established Wangjia Architectural Design Consulting (Shanghai) Co., Ltd. in Shanghai, China as a wholly owned subsidiary of Open House Development Co., Ltd.

Relocated “Mizonokuchi Sales Center” within Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture. : Opened “Yokohama Sales Center” (Yokohama Station east exit) in Nishi-ku, Yokohama-shi, Kanagawa Prefecture.

Relocated "Mizonokuchi Sales Center" within Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened "Yokohama Sales Center" (Yokohama Station east exit) in Nishi-ku, Yokohama-shi, Kanagawa Prefecture.

東京都千代田区丸の内に株式会社オープンハウス・ディベロップメントの100％子会社として、株式会社ＯＨリアルエステート・マネジメントを設立

Established OH Real Estate Management Co., Ltd. in Marunouchi, Chiyoda-ku, Tokyo as a wholly owned subsidiary of Open House Development Co., Ltd.

自社ブランドによる営業を開始

Terminated the franchise agreement with “CENTURY 21 REAL ESTATE OF JAPAN LTD.” : Commenced sales under the Company’s own brand.

「株式会社センチュリー21・ジャパン」との間のフランチャイズ契約を解約 : 自社ブランドによる営業を開始

Terminated the franchise agreement with "CENTURY 21 REAL ESTATE OF JAPAN LTD."

Commenced sales under the Company's own brand.

Relocated “Yokohama Sales Center” (Yokohama Station east exit) within Nishi-ku, Yokohama-shi, Kanagawa Prefecture.

Relocated "Yokohama Sales Center" (Yokohama Station east exit) within Nishi-ku, Yokohama-shi, Kanagawa Prefecture.

本社を東京都千代田区丸の内に移転。

東京都千代田区丸の内に本社を移転

Opened “Kamata Sales Center” in Ota-ku, Tokyo.

Opened "Kamata Sales Center" in Ota-ku, Tokyo.

Listed on the First Section of the Tokyo Stock Exchange (Securities Code: 3288).

東京証券取引所 市場第一部に上場（証券コード3288）

Opened “Nishi-Kasai Sales Center” in Nishi-Kasai, Edogawa-ku, Tokyo.

Opened "Nishi-Kasai Sales Center" in Nishi-Kasai, Edogawa-ku, Tokyo.

Opened “Kita-Senju Sales Center” in Kita-Senju, Adachi-ku, Tokyo.

Opened "Kita-Senju Sales Center" in Kita-Senju, Adachi-ku, Tokyo.

Opened “Tsunashima Sales Center” in Kohoku-ku, Yokohama-shi, Kanagawa Prefecture.

Opened "Tsunashima Sales Center" in Kohoku-ku, Yokohama-shi, Kanagawa Prefecture.

Opened “Sasazuka Sales Center” in Sasazuka, Shibuya-ku, Tokyo.

Opened "Sasazuka Sales Center" in Sasazuka, Shibuya-ku, Tokyo.

Opened “Kawasaki Sales Center” in Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened "Kawasaki Sales Center" in Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened “OPEN HOUSE Group Osaka Office” in Kita-ku, Osaka-shi, Osaka. : Converted Asakawa Home Co., Ltd. to a consolidated subsidiary.

株式会社アサカワホームを連結子会社化

Opened "OPEN HOUSE Group Osaka Office" in Kita-ku, Osaka-shi, Osaka.

Converted Asakawa Home Co., Ltd. to a consolidated subsidiary.

Opened “Jiyugaoka Sales Center” in Jiyugaoka, Meguro-ku, Tokyo. : Opened “Kichijoji Sales Center” in Kichijoji-honcho, Musashino-shi, Tokyo.

Opened "Jiyugaoka Sales Center" in Jiyugaoka, Meguro-ku, Tokyo.

Opened "Kichijoji Sales Center" in Kichijoji-honcho, Musashino-shi, Tokyo.

Opened “OPEN HOUSE Group Nagoya Office” in Nakamura-ku, Nagoya-shi, Aichi Prefecture. : Opened “Shin-Yokohama Sales Center” in Kohoku-ku, Yokohama-shi, Kanagawa Prefecture.

Opened “Nerima Sales Center” in Toyotamakita, Nerima-ku, Tokyo.

Opened "Nerima Sales Center" in Toyotamakita, Nerima-ku, Tokyo.

Established Open House Texas Realty & Investments LLC in Texas, U.S.A.

米国テキサス州にOpen House Texas Realty & Investments LLCを設立

Launched the brokerage, single-family home and condominium business in the Nagoya metropolitan area. : Opened “Sakae Sales Center” in Naka-ku, Nagoya-shi, Aichi Prefecture. : Changed the trading name of Asakawa Home Co., Ltd. to Open House Architect Co., Ltd.

株式会社アサカワホームが株式会社オープンハウス・アーキテクトに商号変更

Launched the brokerage, single-family home and condominium business in the Nagoya metropolitan area.

Opened "Sakae Sales Center" in Naka-ku, Nagoya-shi, Aichi Prefecture.

Changed the trading name of Asakawa Home Co., Ltd. to Open House Architect Co., Ltd.

Opened “Nippori Sales Center” in Arakawa-ku, Tokyo. : Opened “Kinshicho Kita Sales Center” in Kinshi, Sumida-ku, Tokyo. : Changed the name of “Kinshicho Sales Center” (Kotobashi, Sumida-ku) to “Kinshicho Minami Sales Center.”

Opened "Nippori Sales Center" in Arakawa-ku, Tokyo.

Opened "Kinshicho Kita Sales Center" in Kinshi, Sumida-ku, Tokyo.

Changed the name of "Kinshicho Sales Center" (Kotobashi, Sumida-ku) to "Kinshicho Minami Sales Center."

Opened “Oimachi Sales Center” in Shinagawa-ku, Tokyo. : Opened “Musashi-Kosugi Sales Center” in Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened "Oimachi Sales Center" in Shinagawa-ku, Tokyo.

Opened "Musashi-Kosugi Sales Center" in Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened “Kamiooka Sales Center” in Konan-ku, Yokohama-shi, Kanagawa Prefecture. : Opened “Motoyama Sales Center” in Chikusa-ku, Nagoya-shi, Aichi Prefecture.

Opened "Kamiooka Sales Center" in Konan-ku, Yokohama-shi, Kanagawa Prefecture.

Opened "Motoyama Sales Center" in Chikusa-ku, Nagoya-shi, Aichi Prefecture.

Opened “GINZA SALON” as a center providing services to affluent customers in Ginza, Chuo-ku, Tokyo.

東京都中央区銀座に富裕層向けサービスの拠点として「GINZA SALON」を開設

Opened "GINZA SALON" as a center providing services to affluent customers in Ginza, Chuo-ku, Tokyo.

Opened “Urawa Sales Center” in Nakacho, Urawa-ku, Saitama-shi, Saitama Prefecture. : Opened “Tsurumi Sales Center” in Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture.

Opened "Urawa Sales Center" in Nakacho, Urawa-ku, Saitama-shi, Saitama Prefecture.

Opened "Tsurumi Sales Center" in Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture.

Opened “Urawa Chuo Sales Center” in Takasago, Urawa-ku, Saitama-shi, Saitama Prefecture. : Opened “Motosumiyoshi Sales Center” in Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened "Urawa Chuo Sales Center" in Takasago, Urawa-ku, Saitama-shi, Saitama Prefecture.

Opened "Motosumiyoshi Sales Center" in Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened “Gokiso Sales Center” in Showa-ku, Nagoya-shi, Aichi Prefecture. : Opened “Shin-Koiwa Sales Center” in Katsushika-ku, Tokyo.

Opened "Gokiso Sales Center" in Showa-ku, Nagoya-shi, Aichi Prefecture.

Opened "Shin-Koiwa Sales Center" in Katsushika-ku, Tokyo.

Established Open House Hawaii Realty & Investments LLC in Hawaii, U.S.A.

米国ハワイ州にOpen House Hawaii Realty & Investments LLCを設立

米国ハワイ州のSachi Hawaii- Pacific Century Properties LLC（不動産仲介業）、 : Sachi Hawaii-Pacific Century Property Management LLC（不動産管理業）を子会社化

Registered as a Real Estate Specified Joint Enterprise. : Converted Sachi Hawaii-Pacific Century Properties LLC (real estate brokerage business) and Sachi Hawaii-Pacific Century Property Management LLC (property management business) in Hawaii, U.S.A. to subsidiaries.

不動産特定共同事業許可取得 : 米国ハワイ州のSachi Hawaii- Paci\x{fb01}c Century Properties LLC（不動産仲介業）、 : Sachi Hawaii-Paci\x{fb01}c Century Property Management LLC（不動産管理業）を子会社化

Registered as a Real Estate Specified Joint Enterprise.

Converted Sachi Hawaii-Pacific Century Properties LLC (real estate brokerage business) and Sachi Hawaii-Pacific Century Property Management LLC (property management business) in Hawaii, U.S.A. to subsidiaries.

Opened “Shin-Kawasaki Sales Center” in Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened "Shin-Kawasaki Sales Center" in Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture.

株式会社ホーク・ワンを完全子会社化

Converted HAWK ONE CORPORATION to a wholly owned subsidiary.

Opened "Musashi-Urawa Sales Center" in Numakage, Minami-ku, Saitama-shi, Saitama Prefecture.

Opened "Kawaguchi Sales Center" in Kawaguchi-shi, Saitama Prefecture.

Opened "Kanayama Sales Center" in Naka-ku, Nagoya-shi, Aichi Prefecture.

Opened "OPEN HOUSE Group Fukuoka Office" in Fukuoka-shi, Fukuoka Prefecture.

Opened "Noborito Sales Center" in Tama-ku, Kawasaki-shi, Kanagawa Prefecture.

Opened “Tenjin Sales Center” in Chuo-ku, Fukuoka-shi, Fukuoka Prefecture.

Opened “NAGOYA SALON” as a center handling U.S. real estate in Nakamura-ku, Nagoya-shi, Aichi Prefecture.

Opened “Iidabashi Mansion (Condominium) Gallery” in Shinjuku-ku, Tokyo.

Opened “Sengawa Sales Center” in Chofu-shi, Tokyo.

Opened “Aratamabashi Sales Center” in Mizuho-ku, Nagoya-shi, Aichi Prefecture.

Invested in Gunma Pro Basketball Commission Co., Ltd. (operating company of the Gunma Crane Thunders).

株式会社群馬プロバスケットボールコミッション（群馬クレインサンダーズの運営会社）に資本参加

Opened “Oji Sales Center” in Kita-ku, Tokyo.

Opened “Hodogaya Sales Center” in Hodogaya-ku, Yokohama-shi, Kanagawa Prefecture.

Commenced development of sales centers in the Chiba area, and opened “Motoyawata Sales Center” in Ichikawa-shi, Chiba Prefecture.

Opened “Motoyawata Sales Center” in Ichikawa-shi, Chiba Prefecture.

Opened “Honjin Sales Center” in Nakamura-ku, Nagoya-shi, Aichi Prefecture.

Opened “Ohashi Sales Center” in Minami-ku, Fukuoka-shi, Fukuoka Prefecture.

Opened "Ohashi Sales Center" in Minami-ku, Fukuoka-shi, Fukuoka Prefecture.

Opened “Ozone Sales Center” in Kita-ku, Nagoya-shi, Aichi Prefecture.

Opened “Ogikubo Sales Center” in Suginami-ku, Tokyo.

Opened “Kameari Sales Center” in Katsushika-ku, Tokyo.

Opened "Ozone Sales Center" in Kita-ku, Nagoya-shi, Aichi Prefecture.

Opened "Ogikubo Sales Center" in Suginami-ku, Tokyo.

Opened "Kameari Sales Center" in Katsushika-ku, Tokyo.

Opened “Urayasu Sales Center” in Urayasu-shi, Chiba Prefecture.

Acquired shares of PRESSANCE CORPORATION Co., Ltd., and converted it to an equity-method affiliate.

株式会社プレサンスコーポレーションの株式を取得し、 持分法適用関連会社化

Opened "Urayasu Sales Center" in Urayasu-shi, Chiba Prefecture.

Opened “Ropponmatsu Sales Center” in Chuo-ku, Fukuoka-shi, Fukuoka Prefecture.

Opened "Ropponmatsu Sales Center" in Chuo-ku, Fukuoka-shi, Fukuoka Prefecture.

Opened “Narimasu Sales Center” in Itabashi-ku, Tokyo.

Opened “Funabashi Sales Center” in Funabashi-shi, Chiba Prefecture.

Open House Property Management Co., Ltd. launched the property management business.

株式会社オープンハウス・プロパティマネジメントが不動産管理業務を開始

Opened "Narimasu Sales Center" in Itabashi-ku, Tokyo.

Opened "Funabashi Sales Center" in Funabashi-shi, Chiba Prefecture.

Opened “Tenjin Mansion (Condominium) Gallery” in Chuo-ku, Fukuoka-shi, Fukuoka Prefecture.

Opened "Tenjin Mansion (Condominium) Gallery" in Chuo-ku, Fukuoka-shi, Fukuoka Prefecture.

Acquired additional shares of PRESSANCE CORPORATION Co., Ltd., and converted it to a consolidated subsidiary.

株式会社プレサンスコーポレーションの株式を追加取得し、連結子会社化

Opened “Omiya Sales Center” in Omiya-ku, Saitama-shi, Saitama Prefecture.

Opened "Omiya Sales Center" in Omiya-ku, Saitama-shi, Saitama Prefecture.

Changed the trading name of OH Real Estate Management Co., Ltd. to Open House Real Estate Co., Ltd.

Relocated “Shin-Yokohama Sales Center” to Midori-ku, Yokohama-shi, Kanagawa Prefecture, and changed the name of the sales center to “Nakayama Sales Center.”

株式会社OHリアルエステート・マネジメントが株式会社オープンハウス・リアルエステートに商号変更

Relocated "Shin-Yokohama Sales Center" to Midori-ku, Yokohama-shi, Kanagawa Prefecture, and changed the name of the sales center to "Nakayama Sales Center."

Opened “Ofuna Sales Center” in Kamakura-shi, Kanagawa Prefecture.

Opened “Takabata Sales Center” in Nakagawa-ku, Nagoya-shi, Aichi Prefecture.

Opened “Kasugabaru Sales Center” in Kasuga-shi, Fukuoka Prefecture.

Opened "Ofuna Sales Center" in Kamakura-shi, Kanagawa Prefecture.

Opened "Takabata Sales Center" in Nakagawa-ku, Nagoya-shi, Aichi Prefecture.

Opened "Kasugabaru Sales Center" in Kasuga-shi, Fukuoka Prefecture.

Opened “Shimokitazawa Sales Center” in Setagaya-ku, Tokyo.

Opened “Kashiwa Sales Center” in Kashiwa-shi, Chiba Prefecture.

Opened "Shimokitazawa Sales Center" in Setagaya-ku, Tokyo.

Opened "Kashiwa Sales Center" in Kashiwa-shi, Chiba Prefecture.

（株）おうちリンクが銀行代理業を開始

Opened “Nishiarai Sales Center” in Adachi-ku, Tokyo.

Opened “Fujisawa Sales Center” in Fujisawa-shi, Kanagawa Prefecture.

Launched the brokerage business in the Kansai area, opened “Umeda Sales Center” in Kita-ku, and “Tennouji Sales Center” in Abeno-ku, Osaka-shi, Osaka.

Opened “Umeda Sales Center” in Kita-ku, Osaka.

Opened “Tennouji Sales Center” in Abeno-ku, Osaka-shi, Osaka.

*事業部門は 100%子会社となる「株式会社オープンハウス(旧:株式会社オープ ンハウス準備会社)」に承継

Shifted to a pure holding company structure, and changed the company name to Open House Group Co., Ltd. : * Succeeded its business divisions to the Company’s wholly-owned subsidiary, Open House Co., Ltd. (former Open House Preparatory Company Co., Ltd.)

純粋持株会社へ移行し、「株式会社オープンハウス」より「株式会社オープンハウスグ ループ」に商号変更 : *事業部門は 100%子会社となる「株式会社オープンハウス(旧:株式会社オープ ンハウス準備会社)」に承継

Shifted to a pure holding company structure, and changed the company name to Open House Group Co., Ltd. : * Succeeded its business divisions to the Company's wholly-owned subsidiary, Open House Co., Ltd. (former Open House Preparatory Company Co., Ltd.)

東京証券取引所 プライム市場へ移行

本社を丸の内のJPタワーに移転。

本社を千代田区丸の内・JPタワーへ移転

Acquired shares of Sanei Architecture Planning Co., Ltd. and made it a consolidated subsidiary

株式会社三栄建築設計の株式を取得し、連結子会社化

Additionally acquired shares of Sanei Architecture Planning Co., Ltd. and made it a wholly-owned subsidiary

株式会社三栄建築設計の株式を追加取得し、完全子会社化

Sanei Architecture Planning Co., Ltd. changes its company name to Meldia Co., Ltd.

株式会社三栄建築設計が株式会社メルディアに商号変更

Additional acquisition of shares of PRESSANCE CORPORATION Co.,Ltd., making it a wholly-owned subsidiary.

株式会社プレサンスコーポレーションの株式を追加取得し、完全子会社化

Additional acquisition of shares of PRESSANCE CORPORATION Co.,Ltd., making it a wholly-owned subsidiary