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  1. Home
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  5. Site and ground investigation
  6. Designated Investigation Agency | Historical investigations to prevent hidden defects even in small plots of land or buildings currently in operation.

Designated Investigation Agency | Historical investigations to prevent hidden defects even in small plots of land or buildings currently in operation.

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Geographical and historical survey

last updated:Jun 30, 2026

ジオテック
ジオテック
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Visualizing risks even in small plots of land and operating factories! A historical investigation that supplements important explanations and overcomes technical constraints to establish safe land transactions.

In the case of real estate transactions in buildings that are currently operating factories or in narrow sites where the entry of large machinery is impossible, accurately assessing the risk of soil contamination has posed significant challenges with traditional investigation methods. However, proceeding with the transfer while leaving the risks unclear can lead to serious disputes in the future over massive damages or contract cancellations. This explanatory document details the know-how for real estate brokerage companies to overcome such technical constraints and establish safe land transactions without halting operations through the use of "strategic historical investigations." The designated investigation agency, Geotech, meticulously examines past public notification materials and detailed land histories to prepare objective reports that strongly supplement the reliability of important disclosures. Furthermore, it covers the establishment of numerical data evidence using a unique small-scale sampling technique that can be implemented in locations inaccessible to large equipment, as well as how to incorporate warranty clauses into contracts. This book aims to strengthen the risk management systems of brokerage companies themselves and to carry out reliable contractual practices while maintaining social credibility.

    Site and ground investigationDismantling and movingOther civil engineering services
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Designated Investigation Agency | Historical investigations to prevent hidden defects even in small plots of land or buildings currently in operation.

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

This service, provided by Geotech Co., Ltd., a designated investigation agency under the Soil Contamination Countermeasures Act, offers high-precision historical investigations and voluntary soil contamination surveys tailored to sites with many technical constraints. Even in narrow spaces or within buildings where factories are currently operating, we comprehensively collect and analyze multi-layered historical data to create objective evaluation reports that enhance the reliability of important explanatory information. Additionally, if contamination risks are identified, we quickly conduct sampling surveys using our unique compact equipment in a space-saving manner, establishing accurate numerical data on the contamination status underground. We provide strong evidence to prevent customer disputes before they arise.

Price information

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Price range

P3

Delivery Time

P4

Applications/Examples of results

In real estate brokerage practices involving transactions of narrow land, sites planned for former operating factories, and commercial land distribution in urban areas, this will be utilized as supplementary materials for risk management and important matter explanations prior to contract conclusion. For sellers, it serves as a means to optimize disclosure obligations without halting operations and to avoid liability risks after the sale. For buyers, it is proposed as a means for the early detection of hidden defects within buildings and for safety confirmation. Additionally, it will be widely used as neutral evidence in the formulation of specific defect liability clauses based on accurate numerical data.

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Soil contamination survey

Soil contamination survey

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ジオテック

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