All3 Raises $25m to Automate Construction with Legged Robots and AI Design Software
April 29, 2026 – 8:00 am
The London-founded startup aims to revolutionize the construction industry by replacing the entire construction value chain, from architect’s briefs to move-in-ready buildings, using AI and a purpose-built on-site robot called the Mantis.
Construction is the world’s largest industry by value but one of its least automated. Despite 50 years of technological advancement, productivity in the sector has remained stagnant. All3 was created to change this.
The European construction robotics startup announced a $25 million seed funding round led by RTP Global, with significant participation from SuperSeed and additional investment from Begin Capital, s16vc, and VNV Global. Jelmer de Jong from RTP Global has joined the All3 board.
Founded by Rodion Shishkov, a serial entrepreneur with expertise in industrial robotics and retail logistics, All3 operates across Europe with offices in Berlin and Zug and R&D facilities in London and Belgrade. They emerged from stealth in mid-2025 after testing their robotic system in Belgrade.
All3’s vision is vertical integration: offering an end-to-end solution that replaces the traditional construction value chain. While other startups focus on individual pieces of the puzzle, All3 handles everything from site selection and permits to financing and construction.
Shishkov explained to The Robot Report in June 2025: "The developers find the sites and handle permits and financing, while we can do the rest."
All3’s system comprises three integrated components:
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AI-powered design platform: This tool transforms architect’s briefs or site addresses into compliant building designs optimized for space, local regulations, and robotic production constraints.
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Robotic factories: Described as compact, modular production cells, these facilities fabricate custom timber composite components with 0.2mm precision without programmer intervention.
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All3 Mantis: An autonomous legged robot with a 100kg payload and 4-meter reach, designed for on-site assembly, handling placement, fastening, finishing, and inspection.
Timber composites are the material of choice because they are renewable, store CO₂ during production, and have a lower carbon footprint than concrete, which accounts for 7-8% of global emissions. All3 claims its approach can achieve:
- Up to 30% cost savings
- Up to 50% timeline reductions
- Up to 25% less embodied carbon compared to conventional construction