
HORIZON SHIELD
AI cost diagnostics by a 30-year carpenter
2 followers
AI cost diagnostics by a 30-year carpenter
2 followers
I spent 30 years in Japanese construction — carpenter, site supervisor, CM. I watched homeowners get systematically overcharged. HORIZON SHIELD uses AI to diagnose construction cost estimates. Upload a quote photo and get a diagnosis in 30 minutes. Real case: found ¥500,000 in overbilling on a ¥3,800,000 quote. Backed by Japan's first open construction cost database (87 plans, 88 fraud patterns, CC-BY 4.0) on Zenodo and GitHub. Free AI diagnosis via ChatGPT and LINE.











Thank you David for the upvote! Really means a lot coming from someone with your track record on PH. HORIZON SHIELD is my attempt to fix Japan's construction market — 30 years as a carpenter turned into an AI diagnostic tool. Would love your feedback!