Munich's Tendos raises €12m seed led by Insight Partners to bring AI agents to building-materials sales

Tendos, a Munich-based start-up that builds AI agents for manufacturers in the building-materials industry, has raised €12 million in a seed round led by Insight Partners. The company announced the round on 27 October 2026 in a press release distributed by news aktuell.

The founders of four unicorns, Personio, Forto, Flix and SumUp, also took part, alongside other founders and industry figures including Stephan Tahy, former CEO of bathroom maker Duravit. As Startbase points out, the unicorn founders invested privately; the companies themselves are not listed as investors.

What Tendos does

Building-materials manufacturers win or lose orders on how quickly and accurately they respond to enquiries, Tendos argues. Sales teams receive tenders, specifications, bills of quantities and customer emails every day, and have to match them to catalogues with thousands of products before they can send a quote. According to the company, most of this work is still done by hand, with staff copying data between inboxes, tender portals, CRM and ERP systems.

Tendos uses purpose-built AI agents to automate these steps. Its platform finds relevant tenders, reads incoming requests and documents, matches requirements to the manufacturer's product catalogue, drafts quotes and processes orders directly in existing CRM and ERP systems. Sales teams keep control of decisions that need their expertise, the company says.

Early customers

Tendos names Wilo, Grundfos, Hansgrohe, Spelsberg, KSB and Kermi among the manufacturers in heating, plumbing, ventilation and building technology that already run core sales processes on its platform. The company says it has processed quote volumes in the double-digit billions of euros so far.

That figure needs context. As Startbase notes, it describes the value of quotes and tenders handled through the software, not Tendos' revenue or the orders its customers actually won. Tendos did not disclose revenue, a valuation or the size of individual investments.

Who is backing it

Insight Partners is a New York-headquartered software investor with teams in London, Tel Aviv and the Bay Area. According to the release, it had more than $90 billion in regulatory assets under management at the end of 2025 and has invested in over 900 companies.

Insight managing director Teddie Wardi said in the announcement that the building-materials industry, and manufacturing more broadly, had been largely untouched by the first wave of AI companies, and that this is now changing. Tendos co-founder and CEO Christian Sedlmeier described building materials as one of Europe's largest and least digitised markets, with highly qualified sales teams buried in paperwork and repetitive tasks.

What the money is for

Tendos plans to use the funding for international expansion beyond its base in Germany, Austria and Switzerland. It also wants to add more use cases within manufacturers' sales processes and beyond, and to reach further segments of the building-materials value chain. The company has not said which countries it will enter first or how many people it plans to hire.

What it means for European founders and investors

Tendos is part of a clear pattern in European AI funding: vertical agents built for one industry's messy, document-heavy workflows. Rather than selling a general assistant, the company has chosen a process with clear economics, turning tenders into quotes faster, in a sector where Germany has deep industrial roots and a dense base of mid-sized and large manufacturers.

For founders, two details stand out. First, the customer list is the main proof point: well-known brands such as Grundfos and Hansgrohe give a seed-stage company credibility that a slide deck cannot. Second, the angel line-up of founders from Personio, Forto, Flix and SumUp shows how Europe's earlier generation of scale-up founders is now recycling capital and know-how into the next wave.

For investors, a €12 million seed led by a large US growth investor is another sign that the boundary between seed and Series A keeps moving for AI companies with early enterprise traction. It echoes other recent rounds for European workflow AI, such as Duvo's $32m Series A, and the broader interest in industrial AI seen in Ubitium's seed round.

The open question, as Startbase also notes, is whether Tendos can turn large processed volumes and big-name pilots into a steadily growing, recurring business outside its home market.

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