Prefab is a Tokyo-based spin-out from the University of Tokyo that focuses on automating the construction industry’s estimating operations. Its core product uses proprietary computer vision and AI models to read uploaded construction drawings, identify individual components, and instantly produce detailed quotations, dramatically cutting manual workload. Led by CEO Noriaki Teramachi, the company positions its technology as a way for construction professionals to redirect time from repetitive take-offs to more creative, higher-value tasks. With fresh seed capital, Prefab plans to expand hiring across key roles and accelerate product development. The team aims to deepen blueprint-reading accuracy, enrich materials databases, and broaden integrations with existing construction management software. Although the company has not disclosed revenue or user figures, the recent funding signals investor confidence in its market potential. By targeting Japan’s sizable and traditionally manual construction sector, Prefab seeks to become the default estimation engine for builders and general contractors.

Total raised

$0M

Funding rounds

1

Latest round

Seed

Latest activity

Sep 2025