Real Estate Development: Historical Investigations to Alleviate Buyer Concerns | Designated Investigation Agency

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Geographical and historical survey

last updated：Sep 07, 2026

ジオテック

Disclose the contamination status of the underground with scientific data for a smooth price agreement.

In the real estate development industry, it is essential to alleviate concerns regarding the presence of underground soil contamination for buyers considering land purchases and to provide reassurance for transactions. In particular, buyers' doubts about environmental risks become significant issues during price negotiations and condition setting. Our historical investigation clarifies the underground contamination status through a scientific approach, helping to alleviate buyers' anxieties and supporting smooth price agreements and secure asset acquisitions. Objective certification from a third-party organization promotes consensus that is satisfactory to both parties and prevents transaction cancellations. This service demonstrates the safety of underground areas with evidence during real estate sales, serving as an environmental solution to protect corporate social credibility and asset value. 【Usage Scenarios】 - Alleviating buyer anxieties in real estate transactions - Facilitating price negotiations and condition setting - Preventing transaction cancellations - Maintaining corporate social credibility - Preserving land asset value 【Effects of Implementation】 - Smoother transactions due to increased buyer reassurance - Resolution of doubts regarding environmental risks - Formation of consensus based on objective data - Increased transaction success rates - Enhanced corporate image

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【Features】 - High-precision soil self-investigation compliant with the Soil Contamination Countermeasures Act and related technical standards. - Multifaceted analysis of public notification materials, historical aerial photographs, local history, and other government-held information to determine the risk classification of contamination. - Use of core cutters for pavement drilling and simple boring machines capable of dry excavation to prevent secondary contamination. - Collected soil and groundwater samples are managed in dedicated containers at 0-4°C in a cool, dark place in accordance with JIS K 0094. - Strict measurement of the leaching and content of specific hazardous substances, providing precise data based on objective facts. 【Our Strengths】 Geotech offers "total ground services," providing a one-stop solution for all ground-related tasks, including ground surveys and reinforcement design/construction for buildings, subsidence correction work for existing structures, and soil contamination investigations. With abundant experience and reliable technology, we create the future of cities from the ground up.

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It is used as environmental risk adjustment data for the objective asset value (real estate appraisal) required when obtaining loans from financial institutions, as well as for the environmental liability assessment of owned real estate in corporate business revitalization and M&A, and for on-site risk management as part of obtaining and maintaining ISO 14001 certification. Additionally, it plays a decisive role as a seller-led defense measure before contracts to completely eliminate troubles such as being claimed for massive damages after soil contamination is discovered following land transactions. Furthermore, it is widely utilized in construction practices for preventing the spread of contamination to surrounding groundwater due to excavation work, quality management of on-site remedial soil, and pre-judgment for sorting and processing to dramatically reduce disposal costs for surplus soil.