XBuild, a construction-tech startup, with an AI-native estimating and proposal platform for contractors and insurers, focused initially on residential roofing and insurance restoration work, has raised $19m in Series A funding.
The funding round was led by N47, with participation from Rackhouse Ventures and Andreessen Horowitz, marking a major investment in construction-focused AI solutions, according to Beinsure.
The firm develops software that automates the creation of carrier-aligned repair estimates, helping contractors and insurers reduce manual estimating work.
Since its 2025 launch, the platform has processed over 15,000 completed projects, representing roughly $250m in construction volume. Adoption has been strongest in property insurance claims, particularly residential roofing, where XBuild customers avoided more than 40,000 hours of manual estimation work.
The platform has recently introduced Roofing Proposals, a tool for residential contractors that generates detailed, editable estimates in under 15 minutes. It integrates PDF measurement reports from providers such as EagleView, Hover, and Roofr, alongside standard job-site photography, converting these inputs into structured proposals ready for client delivery.
XBuild also connects directly with ABC Supply for real-time material pricing and offers homeowners digital proposals, tiered Good Better Best pricing, e-signatures, and embedded payments via Stripe, reducing turnaround time while retaining flexibility for contractors.
The new funding will allow XBuild to expand into additional verticals including HVAC, concrete, and window installation, while continuing to support insurers and insurance-focused contractors through its Insurance Estimation Copilot, which remains in active use across claims environments.
Matthew Cowan, general partner at N47, said, “Estimating and proposal generation remain major bottlenecks for contractors, yet legacy tools haven’t kept pace with AI capabilities or the realities of how the industry works today.” He added that legacy software has failed to adapt to modern workflows, whereas XBuild applies automation where it delivers measurable efficiency gains rather than abstract optimisation.
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