All3, a European construction technology startup, closed a $25 million seed round led by RTP Global to scale an integrated platform that combines AI design software, robotic fabrication, and autonomous on-site assembly robots. SuperSeed, Begin Capital, s16vc, and VNV Global also participated in the round, according to FoundersToday.
The Full-Stack Approach
Most construction automation startups focus on a single piece of the workflow: 3D printing (ICON), bricklaying (Fastbrick Robotics), or prefabrication. All3 is attempting something more ambitious, integrating every step from design through move-in-ready building into one connected system, according to TechFundingNews. The company outsources only the concrete foundation, roboticizing everything above ground.
The platform has three layers. An AI design tool generates and manages building components. Robotic factories manufacture those components using structural timber composites. Then All3 Mantis, an autonomous legged robot designed for uneven terrain on active construction sites, handles on-site assembly. The legged form factor is deliberate: wheeled machines struggle on the kind of ground you actually find at a building site.
The company claims its system can cut project costs by up to 30%, shorten delivery timelines by up to 50%, and reduce embodied carbon by up to 25%, per TechFundingNews.
Founder Background and Early Traction
All3 was founded in 2023 by Rodion Shishkov and Slava Bocharov, serial entrepreneurs who previously co-founded Samokat, Russia’s largest food delivery platform, which sold for $1.5 billion within five years of launch, according to TechFundingNews.
The AI design software has already processed over 100,000 square meters of residential development, building a project pipeline in Germany for 2026 and 2027. The company operates across Europe with offices in Berlin and Zug, and the new funding will expand R&D operations in London and Belgrade while deploying initial robot fleets to German construction sites.
“Construction is the largest global sector yet to experience a productivity revolution, representing a trillion-dollar opportunity,” Shishkov told FoundersToday.
Where It Fits
Construction productivity has flatlined for decades while nearly every other major industry has automated. The timing matters: European cities face acute housing supply constraints, and labor shortages continue to constrain output. All3’s bet is that full-stack integration, not point solutions, is required to break the deadlock. The $25 million seed will test whether autonomous robots can deliver on that thesis at multi-story, multi-family residential scale, starting in Germany this year.