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Prefab raises ¥41.5 million in seed round led by ANOBAKA to expand recruitment and enhance its AI construction estimation platform.

PRIVATESep 22, 2025

Amount Raised

¥41.5 Million

Round Type

Seed

TokyoSoftwareArtificial IntelligenceSaaSMachine Learninginformation technology & services

Investors

East VenturesMintAnobaka

Description

Prefab, a Tokyo-based AI-SaaS provider for construction, has successfully raised ¥41.5 million in a seed funding round. The funding, led by ANOBAKA, will be used to recruit key personnel and accelerate the development of their AI-powered platform. Prefab aims to revolutionize construction estimation processes with its innovative solutions. The company is already making strides in automating construction estimation via AI technology.

Company Information

Company

Prefab

Location

Tokyo, Tokyo, Japan

About

Prefab is a Tokyo-based provider of AI-SaaS solutions for the construction industry. The company focuses on automating estimating operations using AI, developed from research at the University of Tokyo. By automating the quotation process through AI that reads blueprints, Prefab aims to reduce manual workload significantly. Their goal is to revolutionize the construction industry's estimation process, allowing professionals to engage in more creative tasks.

Fundz sees it the moment Prefab raises, hires an exec or expands, usually minutes after it happens, and tells you who to reach.

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Prefab raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

145 of these a day, filtered to the companies you pick, with the decision-maker attached.

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Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals, including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications, based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include FundzWatch™ for automated website change detection, Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 281,000+ organizations. Developers and data teams can access these signals programmatically via the Fundz Funding Data API, with transparent published pricing.