Designated Investigation Agency | A thorough historical investigation that strongly complements important information explanations and prevents hidden defects.

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Geographical and historical survey

last updated：Sep 07, 2026

ジオテック

Strongly supplementing important matter explanations to prevent contract cancellations! Practical historical investigations to thoroughly manage risks and prevent customer troubles in real estate brokerage companies.

In the practice of real estate sales contracts, the discovery of soil contamination after the transfer of property poses a significant business risk, leading to long-term legal battles over damage claims and contract cancellations. Particularly, it is extremely difficult to detect "hidden defects" that even the seller may not be aware of, solely through regular land inspections. This explanatory document provides a detailed practical guide on "historical land investigations before contracts" to maximize the safety of transactions and thoroughly prevent customer disputes after the transfer. By rigorously examining the past usage history of the land and public notification documents, GeoTech, a designated investigation agency under the Soil Contamination Countermeasures Act, visualizes invisible underground risks in advance and strongly supplements the reliability of important matter explanations. Furthermore, it covers the establishment of numerical data evidence through voluntary sampling investigations in cases of contamination concerns, as well as how to incorporate defect liability clauses into sales contracts. This practical guide aims to strengthen the risk management system of brokerage companies and promote smooth land transactions while maintaining social credibility.

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basic information

This service, provided by Geotech Co., Ltd., a designated investigation agency under the Soil Contamination Countermeasures Act, offers advanced historical land investigations and voluntary soil contamination surveys for real estate brokerage companies. It comprehensively collects and analyzes multilayered data such as past land use history, public notification documents, residential maps, and aerial photographs to prepare reports that objectively assess the safety of transactions. Additionally, if contamination risks are identified, a Phase 2 sampling survey compliant with official methods will be promptly conducted to establish the contamination status underground as accurate numerical data. We provide highly reliable deliverables as evidence to strongly supplement important matter explanations, preventing legal disputes and customer troubles in advance.

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In the real estate brokerage business involving the sale and purchase of land, factory sites, and commercial properties, it is utilized as supplementary material for important explanations before contract signing. For sellers, it serves as risk management to avoid long-term disputes related to damage compensation risks after the sale and contract cancellation. For buyers, it is proposed as a means to detect hidden defects early and ensure safety before asset acquisition. Additionally, it is used to formulate specific defect warranty clauses based on clear numerical data and as neutral evidence in price negotiations, widely utilized to promote smooth real estate transactions while maintaining the brokerage firm's social credibility.