MOZU raises ¥1.3B Series B to build AI for Japan's building-materials trade
What's the deal? Japanese startup MOZU has raised roughly ¥1.3 billion (about $8 million) in a Series B round led by existing investor Spiral CapitalDealroom has a profile for this one. Try Dealroom →. The financing combined a third-party share allocation with a loan from Japan Finance Corporation, and lifts MOZU's total capital raised to ¥1.95 billion.
Who's backing it? Alongside Spiral Capital, existing shareholders BRICKS FUND TOKYODealroom has a profile for this one. Try Dealroom → — the corporate venture arm of Mitsubishi EstateDealroom has a profile for this one. Try Dealroom → — and Sila HoldingsDealroom has a profile for this one. Try Dealroom → joined the round. Mizuho CapitalDealroom has a profile for this one. Try Dealroom → and Minna no Market came on as new investors, while Japan Finance CorporationDealroom has a profile for this one. Try Dealroom → provided the debt portion.
What does MOZU do? Founded in May 2023, it runs MOZUオーダー ("MOZU Order"), a "digital wholesaler" of building materials such as kitchens, bathroom units, air conditioners and water heaters. It targets construction firms, handling everything from proposals and quotes to sales and delivery from a single national base.
Why now? Japan's building-materials distribution market tops ¥4 trillion, yet much of it still runs on phone and fax orders through layered supply chains. MOZU says compressing that middle layer lets small contractors order by smartphone at lower prices, with next-day delivery in some cases.
What's the endgame? MOZU will spend the money on industry-specific AI to automate material selection, quoting and planning — tasks it says currently take days. The goal is to complete them in minutes at "プロと同等以上の精度" (accuracy equal to or above a professional's), and to hire across engineering, product and business development.
What could go wrong? The company concedes building-materials procurement carries "固有の複雑さ" (inherent complexity), with decisions long dependent on specialist experience that generic AI struggles to handle. Rising material prices and supply uncertainty tied to Middle East tensions add further pressure to the market it serves.
The signal: The round reflects investor appetite for vertical AI aimed at large, analogue industries. MOZU says it has signed more than 20,000 member firms in about 18 months — roughly a tenth of its estimated 200,000 target companies — a traction curve that helped justify the step-up from its previous raise.
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