Designated Investigation Agency | Reliable Investigation to Avoid Soil Contamination Risks in Land Transactions

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Soil survey

last updated：Sep 07, 2026

ジオテック

A reliable investigation to avoid soil contamination risks in land transactions.

This is an advanced investigation solution specialized for land transactions, aimed at completely clarifying the underground soil contamination risks that can become significant issues after contracts are signed or after handovers in real estate development and land sales by developers. Under a strict management system as a Ministry of the Environment designated investigation agency, we conduct precise analyses based on public law, providing solid evidence to ensure the safety of transactions. By logically narrowing down areas of concern through preliminary historical investigations and executing sampling at optimal locations, we optimize investigation costs while achieving high-precision risk extraction without oversight. This prevents fatal troubles such as unexpected purification costs after purchase or halting of development plans, thereby protecting the brand value and assured business profits of companies. It is an essential package for land sales that eliminates disadvantages for both sellers and buyers, supporting a smooth and transparent asset transfer. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure safety in many construction projects.

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basic information

This is a standard investigation specification for real estate appraisal and transactions that meets the criteria for designated investigation agencies based on the Soil Contamination Countermeasures Act. It corresponds to soil gas sampling of Type 1 specific hazardous substances based on official methods, analysis of leaching amounts and content of Type 2 heavy metals and Type 3 pesticides, and precise chemical analysis of dioxins and similar substances. Sampling employs an electric portable boring machine that allows for anhydrous drilling even on paved sites, and ensures strict storage in sealed sampler containers to prevent component volatilization, along with prompt laboratory transportation. Throughout all processes, we guarantee reliable evidence without data tampering and deliver highly reliable results quickly to our customers.

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Applications/Examples of results

It is utilized for due diligence (asset valuation) during land acquisition by real estate developers, for pre-risk assessment related to the sale of company-owned land, and for proving collateral value during loan examinations by financial institutions. Additionally, it is widely adopted in all situations where trust banks and real estate brokers want to reliably prevent fatal troubles such as damage claims or contract cancellations due to soil contamination discovered after handover, and to present objective and scientific safety certifications to buyers for smooth contract conclusion. It is an essential system for eliminating barriers to construction progress in advance and achieving a high level of cost reduction while ensuring complete compliance.