
HORIZON SHIELD
Developer ToolsAI cost diagnostics by a 30-year carpenter
About
With three decades of experience in Japan's construction industry, including roles as a carpenter, site supervisor, and construction manager, I witnessed homeowners consistently facing excessive charges. HORIZON SHIELD employs artificial intelligence to analyze construction cost estimates. By uploading a photo of a quote, users receive a detailed assessment within 30 minutes. In one actual instance, the system identified 500,000 yen in overcharges on a 3,800,000 yen estimate. This innovation is supported by Japan's inaugural open construction cost database, which is accessible on Zenodo and GitHub under a CC BY 4.0 license and contains 87 plans and 88 fraud patterns. Free AI analysis is available through ChatGPT and LINE.
May 5, 2026Week 9
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