| 2002-11 |
[Distribution Department] Opening of Tokyo Branch. |
| 2002-11 |
Asset Management Department established. |
| 2002-11 |
Subsidiary Top Home Hamada Co., Ltd. changes its name to Tomiyama Home Akita Co., Ltd. |
| 2003-09 |
Subsidiaries Tomiyama Home Akita Co., Ltd., Tomiyama Home Iwate Co., Ltd., and Tomiyama Home Aomori Co., Ltd. merge to form Tomiyama Home Tohoku Co., Ltd. |
| 2003-11 |
Office Marketing Department established. |
| 2004-07 |
Chairman Tomiyama receives the Minister of Land, Infrastructure, Transport and Tourism Award for contributions to the construction industry. |
| 2004-11 |
Setagaya Branch of the Housing Division established. |
| 2004-11 |
Sales Promotion College established. |
| 2005-01 |
The 'Tohoku Citizens' Housing and Problem Solving Center' established. |
| 2005-06 |
Used home revitalization project launched. |
| 2005-11 |
Kumagaya Branch of the Housing Division and IT Sales Section of the Distribution Department established. |
| 2006-11 |
Tokyo Branch and Nasushiobara Branch established. |
| 2007-11 |
Housing Division Sales Promotion Department established. |
| 2007-11 |
The Housing Division Sendai Branch and Real Estate Division Distribution Sendai Branch transferred operations to subsidiary Tomiyama Home Tohoku Co., Ltd. |
| 2008-11 |
Tomiyama Holdings Co., Ltd. established as a holding company structure. |
| 2008-11 |
Chairman Tomiyama awarded the Order of the Rising Sun. |
| 2009-10 |
Company Home Topia Co., Ltd. changes its name to Tomiyama Home Topia Co., Ltd. |
| 2009-11 |
Tomiyama Home selected for the Ministry of Land, Infrastructure, Transport and Tourism's 'Long-Term Excellent Housing Leading Model Project' [H&H Sustainable System]. |
| 2009-11 |
The 'Tohoku Citizens' Housing Problem Solving Center' inherited by Tomiyama Home Topia Co., Ltd. |
| 2010-06 |
Tomiyama Home Topia selected for the Ministry of Land, Infrastructure, Transport and Tourism's 'Long-Term Excellent Housing Leading Project' [CSS Reformation Navi System]. |
| 2010-11 |
Tomiyama Two-by-Home established Setagaya, Sendai, and Utsunomiya branches. |
| 2010-12 |
Tsuchiya Home was selected for the Ministry of Land, Infrastructure, Transport and Tourism's "Long-Term Excellent Housing Pilot Project" [The Everlasting MIERU House]. |
| 2011-04 |
Tsuchiya Home Tohoku opened a housing reconstruction remodel model in Kitakami City, Iwate Prefecture. |
| 2011-05 |
Tsuchiya Home Tohoku released single-family homes supporting earthquake disaster recovery. |
| 2011-05 |
Tsuchiya Home Topia established the Tsuchiya Energy Consulting Section. |
| 2011-08 |
Tsuchiya Home Topia was selected for the Ministry of Land, Infrastructure, Transport and Tourism's "Long-Term Excellent Housing Pilot Project" [Learning Safety and Security from Earthquakes: My Home]. |
| 2011-10 |
Tsuchiya Home Topia established the Tsuchiya Energy Consulting Department. |
| 2011-10 |
Tsuchiya Home Topia established the Apartment Remodeling Department. |
| 2011-11 |
Tsuchiya Holdings established the CS Promotion Department. |
| 2011-11 |
Tsuchiya Home opened a Special Construction Division at its main residential department. |
| 2011-11 |
Tsuchiya Two Home opened Sapporo West Branch and Omiya Branch. |
| 2011-11 |
Tsuchiya Two Home established a Real Estate Department and opened Omiya and Sendai branches within it. |
| 2012-11 |
Tsuchiya Home and Tsuchiya Two Home merged. |
| 2013-03 |
Tsuchiya Solar Factory Sapporo opened on land adjacent to Sapporo City Satoland. |
| 2013-08 |
Tsuchiya Solar Factory Tomakomai opened in Tomakomai City. |
| 2014-10 |
Tsuchiya Home received the Grand Prize in the Energy Conservation Category of the 2014 Hokkaido Energy Conservation and New Energy Promotion Award. |
| 2014-11 |
Tsuchiya Home and Tsuchiya Home Tohoku merged. |
| 2015-03 |
Tsuchiya Home was selected for the 2014 Hokkaido Environmental and Energy Project Promotion Initiative and the Sapporo-Style New Energy Industry Development Support Project. |
| 2015-11 |
Tsuchiya Home merged with Architono. |
| 2016-02 |
Tsuchiya Home Topia received the 2015 Ministry of Economy, Trade and Industry Advanced Remodeling Contractor Award. |
| 2016-10 |
Tsuchiya Home received the 2016 Hokkaido Energy Conservation and New Energy Promotion Award Grand Prize in the Energy Conservation Category. |
| 2016-10 |
Received the Forestry Agency Subsidy Project 'Wood Design Award 2016' (Forest Park Station Front Model House). |
| 2018-02 |
Established Tokuyama Home Real Estate Co., Ltd. |
| 2019-06 |
Tokuyama Group's 50th anniversary of founding. |
| 2019-06 |
Release of CARDINAL HOUSE. |
| 2022 |
Announcement of selection for the 2022 (Reiwa 4) Sustainable Building Pilot Project (next-generation residential type) 'Tokuyama Home Topia Proposal Project' – Performance verification of an IoT residential experience through renovation of existing homes. |
| 2025 |
Tokuyama Home received the 'Minister of Health, Labour and Welfare Award for Occupational Ability Development 2025 (Reiwa 7).' |
