XBuild raises $19m to scale AI estimating platform

Shared 22 January, 2026

XBuild, a construction-tech startup with an AI-native estimating and proposal platform for contractors and insurers, 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. 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, which delivers measurable efficiency gains rather than abstract optimisation.

Source

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