XBuild raises $19M Series A and launches AI roofing estimate tool

Construction‑focused AI startup XBuild announced a $19 million Series A round on January 20, 2026, led by N47 with participation from Rackhouse Ventures and Andreessen Horowitz. The San Francisco company simultaneously launched “Roofing Proposals,” an AI‑driven estimating product that generates full residential roofing bids in under 15 minutes. ([prnewswire.com](https://www.prnewswire.com/news-releases/xbuild-raises-19m-series-a-launches-ai-powered-residential-roofing-estimate-product-302664721.html))