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  1. Home
  2. Architectural design office
  3. 在住ビジネス 本社
Architectural design office
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在住ビジネス 本社

EstablishmentJune 1, 2012
capital5000Ten thousand
number of employees46
addressTokyo/Minato-ku/3rd Floor, PMO Tamachi IV, 5-29-19 Shiba
phone03-5439-5254
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last updated:Oct 10, 2025
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  • Products/Services(10)
  • catalog(10)
  • news(17)

在住ビジネス Company Profile

There are professionals who support the experts in the housing business! A solution partner for home building.

Zainju Business Co., Ltd. is developing various businesses to support housing developers. We have established a range of support systems, including structural design consulting, site surveys + government office investigations, ground service projects, and housing-related services.

Business Activities

Provision of ground-related services (ground surveys / ground reinforcement work / ground compensation / subsidence correction work / improvement pile extraction work) Provision of site investigation services (current condition surveys / government office investigations) Housing-related services (energy-saving calculations / BELS applications / wallstat input and verification agency / structural calculations / other design assistance) Housing-related compensation system Provision of asbestos pre-investigation services Planning / development / system design / system operation of damage insurance services General agency work for damage insurance

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Products/Services (10)

Wallstat verification + earthquake reconstruction guarantee product image
Wallstat verification + earthquake reconstruction guarantee
3D measurement (3D site survey) product image
3D measurement (3D site survey)
Residential Equipment Warranty product image
Residential Equipment Warranty
Ground investigation / reinforcement work / ground warranty product image
Ground investigation / reinforcement work / ground warranty

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catalog(10)

Survey responses are required to view e-book details. Click to view the e-book.

Zainyu Business Co., Ltd. Company Information / Business Introduction

Zainyu Business Co., Ltd. Company Information / Business Introduction

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Surface ground reinforcement (shallow mixing treatment method)

Surface ground reinforcement (shallow mixing treatment method)

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Columnar ground improvement (deep mixing method)

Columnar ground improvement (deep mixing method)

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Small-diameter steel pipe rotary insertion method (using small-diameter steel pipes for pile-type ground reinforcement)

Small-diameter steel pipe rotary insertion method (using small-diameter steel pipes for pile-type ground reinforcement)

OTHER
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news(17)

バナー画像_2602.jpg

Notice of the Seminar on the Amendment of the "Construction Industry Law" Recorded Video Distribution

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This is an announcement for a recorded seminar from Zaitaku Business Co., Ltd. The theme this time is the "Revised Construction Industry Law," which is currently of great interest! The revisions are extensive, and it can be quite challenging to understand everything. However, this important legal reform holds hope for the future as it aims to improve the construction industry into an attractive profession for younger generations! Let's make sure to understand it thoroughly! We sincerely look forward to your participation.

Mar 12, 2026

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We will be exhibiting at the 46th Japan Building Materials Fair (held in Tokyo).

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We will be exhibiting at the 46th Japan Building Materials Fair, which will be held for two days on February 12 (Thursday) and February 13 (Friday), 2026. Details are as follows: Organizer: Japan Building Materials Co., Ltd. Venue: Tokyo Big Sight, East Exhibition Hall, Halls 4, 5, and 6 Address: 3-11-1 Ariake, Koto-ku, Tokyo Event Dates: February 12 (Thursday) 9:30 AM - 5:00 PM February 13 (Friday) 9:00 AM - 4:00 PM Exhibition Space: East Exhibition Hall, Hall 5, Contractor Support Booth Exhibition Content: wallstat / Ground / Site Survey

Jan 14, 2026

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An article about resident businesses was published in the Daily Wood News (January 8, 2026 edition).

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An article about our resident business has been published in the Daily Timber News (Housing Edition). In light of the enforcement of last year's amendments to the Energy Conservation Law for Buildings and the Building Standards Act, as well as the heightened interest in earthquake countermeasures for the Nankai Trough, the "wallstat verification," which is effective for visualizing seismic performance in line with current conditions, is introduced. Our company supports housing businesses nationwide through our construction business support service "Ken-Sapo," including wallstat, so we hope you will take a look.

Jan 09, 2026

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Detailed information

Company name 在住ビジネス 本社
number of employees46
Contact addresspostalcode 108-0014 Tokyo/ Minato-ku/ 3rd Floor, PMO Tamachi IV, 5-29-19 ShibaView on map TEL:03-5439-5254 FAX:03-3457-3131
Industry Architectural design office
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