All3, a London-based construction robotics outfit, just closed a $25m (£18.5m) seed round led by RTP Global. The company is building a fully integrated stack: AI design software, robotic factories that fabricate timber composite components, and an autonomous legged robot called Mantis for on-site assembly. Its founders sold their last business, Samokat, for $1.5 billion. First commercial build breaks ground in Germany later this year.
A new construction robotics company has just landed a $25m seed round. All3 secured $25m (£18.5m), led by RTP Global, with backing from SuperSeed, Begin Capital, s16vc and VNV Global. For a hard-tech business juggling hardware, software, and factories on one bet, that is a disciplined cheque.
What makes All3 stand out is the scope. Most construction robotics startups focus on one trade: bricklaying, layout, drywall. All3 is rebuilding the entire above-ground value chain into one pipeline: AI-generated design, robotic factories, and an autonomous legged robot that walks the site and assembles the building. The only thing they outsource is the concrete foundation.
The founding team has form. Rodion Shishkov and Slava Bocharov co-founded Samokat, which became Russia’s largest rapid grocery delivery business and sold for $1.5 billion within five years. Now they are pointing that operational muscle at construction.
The funding story
Who is backing All3 and why it matters
RTP Global’s portfolio includes Datadog, Delivery Hero, and SumUp. It is not a construction-native fund, which means the round is being led by a generalist investor with category-defining wins on the books rather than a sector specialist.
RTP Global partner Jelmer de Jong is joining the board. The funding will primarily support R&D operations in London and Belgrade, plus deploying robot fleets to active sites in Germany. All3 also operates offices in Berlin and Zug.
For context: construction labour productivity in the US is essentially flat since 1950, while every other major industry has roughly tripled. a16z has framed construction as one of the largest opportunities for robotics, prefab, and AI-driven construction tech to make a dent in housing affordability.
The technology stack
Three integrated layers, one workflow
All3’s pitch is vertical integration. Three components that talk to each other directly, with no human glue in between.
- AI design software. Takes a brief or site address, generates a fully compliant building design, and optimises for space, planning rules, and what robots can fabricate.
- Robotic factories. Compact, modular production cells that fabricate custom timber composite components with claimed 0.2mm precision. Off-the-shelf robot arms, proprietary software, no programmer in the loop.
- All3 Mantis. An autonomous legged robot for on-site assembly, designed for rough, active job sites where wheeled machines struggle.
The choice of structural timber composite as the primary material is deliberate. Per TNW’s analysis, timber stores CO2 rather than emitting it during production, while concrete accounts for around 7-8% of global carbon emissions. All3 also uses standardized building elements including a standard connector and standard electrical management system, per The Robot Report’s coverage.
Compare that to the standard ConTech robotics playbook, which we have covered before: most successful robotics companies start narrow, prove ROI on a single trade, then expand. All3 is starting wide. That increases capital intensity and execution risk – but if it works, the moat is significantly deeper.
Construction is the largest global sector yet to experience a productivity revolution, representing a trillion-dollar opportunity.Rodion Shishkov, co-founder and CEO, All3
What this signals for the wider market
Vertical integration is back on the table
For a few years, the consensus in ConTech investing was that vertical integration was a graveyard. Katerra, the most heavily funded construction tech startup of its era, raised over $2 billion (mostly from SoftBank) before filing for Chapter 11 bankruptcy in June 2021. Its model was end-to-end vertical integration: design, factory manufacturing, project delivery.
All3’s structural choices look different on a few measurable points. It outsources the foundation rather than handling concrete itself. It uses standardised structural timber components rather than proprietary materials. Its factories are described by the company as compact, modular production cells. Whether those distinctions translate to a different commercial outcome is the open question. The first German build will start to indicate.
The market backdrop is also changing. US construction hiring just hit its slowest rate on record, with 202,000 unfilled positions in February 2026 according to BLS data analysed by ABC. The UK construction workforce sits at a 25-year low. The structural pressure on contractors to consider automation is increasing.
Stay one step ahead on construction tech deals
Funding rounds, M&A, robotics launches, and the analysis that makes sense of them. Delivered weekly.
Join 2500+ ReadersHow All3 stacks up against European peers
Where it fits in the construction robotics map
The European construction robotics field is not crowded. The headline difference between players is how much of the value chain each one is trying to own.
| Company | HQ | Approach | Scope | Latest funding | Stage |
|---|---|---|---|---|---|
| All3 | London | Full-stack: AI design, robotic factory, on-site legged robot | Entire above-ground build | $25m seed (Apr 2026) | Pre-commercial, first build 2026 |
| Monumental | Amsterdam | Robotic subcontractor, sells finished walls | Bricklaying only | $25m seed (Feb 2024) | Live commercial projects |
| 011h | Barcelona | Software-first prefab, modular building system | Multi-family residential | €20m (Oct 2025) | Operating, scaling across Spain |
The clearest comparison is Monumental: same seed size, both Dutch and London-based teams convinced robotics belong on the site. But Monumental has narrowed scope ruthlessly to brick walls. All3 is going wider. Both bets are defensible – they are answering different questions about how construction adopts new technology.
Frequently asked questions
RTP Global led, with participation from SuperSeed, Begin Capital, s16vc and VNV Global. RTP Global partner Jelmer de Jong joined the All3 board. (Source)
Three integrated technologies: AI design software that converts a brief into a buildable plan, robotic factories fabricating custom timber composite components, and Mantis – an autonomous legged robot for on-site assembly. (Source)
Mainly into R&D in London and Belgrade, plus deploying robot fleets to active sites in Germany, the company’s first commercial market. The first building breaks ground there later in 2026. (Source)
Rodion Shishkov and Slava Bocharov founded All3 in 2023. They previously co-founded Samokat, which sold for $1.5 billion within five years. Shishkov also founded TRA Robotics, later acquired by Arrival. (Source)
The sector spends less than 1% of revenue on R&D versus 4.5% in automotive, and labour productivity has barely moved in 75 years. Combined with worsening labour shortages in the US and Europe, structural pressure to automate is finally biting. (Source)
Execution scope. Replacing an entire value chain requires regulatory approval across jurisdictions, developer buy-in, and deploying legged robots on active urban sites – one of the most unpredictable physical environments in industry. Katerra is the obvious cautionary tale. (Source)
UKTN: Construction robotics firm All3 scores £18.5m seed round
The Next Web: All3 raises $25m to automate construction
The Robot Report: All3 launches AI and robotics for housing construction
TFN: The founders behind a $1.5B food delivery exit raised $25M for construction robotics
Robotics Tomorrow: All3 raises $25m seed
Related Articles
Construction’s Productivity Problem: 75 Years of Data That Should Bother You
Construction hiring in the US hit its slowest rate on record
Key Considerations for Construction Robotics Product Development
The Playbook of Europe’s Hottest Construction Robotics Startup
