I picked up a plane and a chisel at fifteen, on a site in Osaka. Site manager, then construction management, then I taught myself to build AI. Along the way I read hundreds of estimates. That is the one thing I have that most homeowners do not: a ruler. So I decided to build a place where everyone could borrow one.
EHN (Estimate Hacker News) is a free public board where real estimates from across Japan gather.
You post your one sheet. You see someone else's. That simple thing did not exist anywhere before.
Share your estimate anonymously. A photo or a PDF. Your one sheet becomes someone's ruler.
Comment on the same worry. "Same here" connects here. You do not have to carry it alone.
A flag shows whether the price sits in a fair range. The signal is there, at a glance.
Your one sheet, read by thirty years on the tools and a construction-cost AI called KIRA. Where the market sits, and where the number looks inflated. The first notch on your ruler.
* The simple assessment tells you whether one estimate is reasonable. It is a separate service from the negotiation-use reverse estimate or the ¥55,000 detailed audit. * Posted estimates are published only after anonymization and the poster's consent. * The board and offer are operated in Japanese.
A newspaper read by people who learn to read an estimate.
Who learn to read a price, and stop being overcharged.
That is where the name comes from.
The board runs in Japanese. The idea travels in any language.