CORDER Releases "Sekisan AI Platform" to Improve Estimation Accuracy and Optimize Costs Through AI and Data Utilization in Estimating

CORDER Inc. (Headquarters: Shibuya-ku, Tokyo, Representative Director: Kento Tanabe) announces the release of its "Sekisan AI Platform," which utilizes AI and data specifically for the "sekisan" (estimating) domain, a critical factor in the profitability of the construction industry.

Since launching the AI proxy service "Online Sekisan Ka" in June 2025, we have already seen adoption by over 30 general contractors nationwide (including branches) and have supported over 200 companies to date. Now, we are launching an AI platform that achieves "improved estimation accuracy" and "cost optimization" through the utilization of AI and data in estimating, leading the industry's transformation.

"Sekisan AI Platform" Service Site: https://corder.co.jp/service/ai-platform/

Changes in the External Environment and Common Challenges Faced by General Contractors

Due to changes in the external environment, management is increasingly emphasizing "improving profit margins," while estimating departments are prioritizing "improving estimation accuracy," "optimizing costs," and "reducing workload."

Effective Solutions to Challenges

To address these challenges, companies are pursuing business reforms through the utilization of AI and data.

"Three Walls" Faced by General Contractors in AI and Data Utilization

However, as many general contractors engage in AI and data utilization for estimating and system development, numerous real-world voices (examples of failures) have been reported, including:

The Wall of Business Understanding A veteran's macro program broke, leading to a request for system development and macro analysis from a system company. However, the system company could not understand the complex, estimating-specific business processes, making implementation impossible.

The Wall of Data Accumulation Attempts were made to database estimating data, but due to variations in notation for the same items across different branches or personnel, and the significant burden of data processing and integration, a usable database could not be achieved.

The Wall of Quality An approximate system was developed at a cost of 50 million yen, but it did not meet quality standards and is currently not in operation.

CORDER's Strengths to Overcome These Walls

To overcome these walls and achieve true DX, CORDER possesses the following strengths:

Deep knowledge and understanding of estimating and business processes With extensive experience supporting all aspects of estimating operations, we possess the practical knowledge to provide optimal solutions.

Construction of business processes where data is automatically accumulated We can build mechanisms that naturally accumulate data through daily operations without placing an additional burden on personnel.

Capacity to achieve results in areas that cannot be completed by AI or systems alone Beyond simply providing tools, we have a system where estimators provide support in areas requiring human intervention, taking responsibility for achieving results.

[Past Support Achievements]

We have supported over 200 general contractors to date through our "Sekisan Daiko" (Estimation Agency Service) for quantity take-off代行 and our "Online Sekisan Ka" service, which handles the entire estimating process using AI and estimators.

Overview of the "Sekisan AI Platform"

This platform utilizes data accumulated through the operation of "Online Sekisan Ka"—which handles estimating processes with AI and estimators—including property information, contractor estimates, estimate comparisons, and breakdowns. It enables the customized development of estimating-specific AI tailored to each company's challenges.

Currently, development and consideration are underway with dozens of general contractors, from large corporations to local businesses.

Implementation Examples of the "Sekisan AI Platform"

Flexible development is possible beyond the following functions, depending on each company's estimating operations and data utilization challenges:

Future Outlook

The "Sekisan AI Platform" will continue to undergo development adapted to the business challenges, requests, and requirements of each company.

With a large number of veteran professionals nearing retirement, the shift from reliance on individual intuition and experience in estimating departments to "evidence-based estimation and profit generation using data" is an urgent management issue.

CORDER will continue to be a true partner, not just providing systems, but deeply understanding each company's operations and challenges to co-create "new mechanisms."

By promoting AI and data utilization in estimating operations, we aim to realize a world where "all individuals involved in construction can focus on creating true value," contributing to the overall profitability and sustainable development of the industry.

Company Name: CORDER Inc.

Representative: Kento Tanabe, Representative Director

Location: Portal Apartment & Art Point 301, 4-17 Sakuragaokacho, Shibuya-ku, Tokyo

Corporate Site: https://corder.co.jp/

Service Site: Sekisan AI Platform: https://corder.co.jp/service/ai-platform/

Online Sekisan Ka: https://corder.co.jp/service/estimation_agency/

Quantity Take-off Agency: https://corder.co.jp/service/picking-up-quantities/

Inquiries: https://corder.co.jp/contact/