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  6. Designated Investigation Agency | Resident Safety Certification for Changing the Use of Factory Sites to Residential Areas

Designated Investigation Agency | Resident Safety Certification for Changing the Use of Factory Sites to Residential Areas

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Geographical and historical investigation

last updated:Jun 30, 2026

ジオテック
ジオテック
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Eliminate defect troubles when changing the use of factory sites to residential areas! Conduct historical investigations to prevent legal disputes after handover and establish safety certifications for residents.

When changing the use of former factory sites to residential areas and promoting redevelopment, the most concerning issue is the "defect trouble" that arises when soil contamination is discovered after handover. This not only undermines the social credibility of residential construction companies but also poses a significant risk to the health of residents. This catalog explains the practicalities of "historical land use verification" to eliminate future legal disputes and provide solid assurance to residents. Based on a detailed risk classification according to past operational history and land use purposes, Geotech comprehensively identifies areas of concern for underground leakage, such as chemical handling locations and drainage pipe routes. Furthermore, it also elaborates on the importance of early assessment to avoid unexpected delays in construction and the sampling investigation process compliant with public law that serves as legal evidence. This guide is ideally suited for house manufacturers, construction companies, and real estate owners to ensure a safe and secure living environment and to successfully complete business plans.

    Site and ground investigationGeological SurveyEnvironmental Survey
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Designated Investigation Agency | Resident Safety Certification for Changing the Use of Factory Sites to Residential Areas

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  • Related Link - https://www.jiban.co.jp/service/env/index.htm
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basic information

This is a soil self-investigation service specialized for residential conversion, provided by the designated investigation agency Geotech, based on the Ministry of the Environment guidelines and various laws and regulations. In the historical investigation conducted during the change of use, we analyze the past operational status and equipment layout of the target site in detail, visualizing the contamination risk for 26 specified hazardous substances. If concerns about contamination arise from the historical confirmation, we will promptly conduct high-precision sampling investigations and component analyses in accordance with official methods. We will prepare and provide a neutral and rigorous measurement result report that can be directly used as safety certification for the client and future residents.

Price information

 

Price range

P3

Delivery Time

P4

Applications/Examples of results

It is used for safety certification before construction and land acquisition when changing the use of factory or business site remnants to residential areas, condominium developments, educational facilities, commercial facilities, and other "residential areas, etc." The main purposes are to eliminate the risk of significant hidden defects being discovered after handover, leading to damage compensation disputes; to scientifically prove the safety of underground conditions to clients and potential buyers; and to create explanatory materials on environmental risks for neighboring residents. It is ideal for development practices that safely advance business plans while completely preventing interruptions in construction or delays in development schedules due to sudden discoveries of soil contamination, thereby strongly protecting the company's social credibility.

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Soil contamination survey | Confirming historical land use to prevent defect troubles when changing factory sites to residential areas and establishing safety certification for residents | Designated survey organization | Geotech

Soil contamination survey | Confirming historical land use to prevent defect troubles when changing factory sites to residential areas and establishing safety certification for residents | Designated survey organization | Geotech

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Soil Contamination Survey and Historical Investigation Brochure for Real Estate Companies

Soil Contamination Survey and Historical Investigation Brochure for Real Estate Companies

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ジオテック

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