The labor crisis in construction has become something of a cliché in business circles—everyone knows the industry can't find enough workers, that projects run over budget. What's less obvious is who will actually solve it.
Monumental, an Amsterdam-based robotics company, thinks it has an answer. On July 15, the startup announced it had raised $32 million in a Series B round led by Khosla Ventures, the Silicon Valley firm known for placing early, aggressive bets on climate and industrial technology. The capital will fund an expansion into the United States later this year, a significant test of whether autonomous bricklaying can translate across regulatory environments and construction cultures.
As of mid-July, the company operates more than 150 robots across active job sites in the Netherlands and the UK. These machines have completed walls for over 100 homes, along with a school, a community center, a hotel, and canal infrastructure projects scattered around Amsterdam. Monumental doesn't sell or rent its systems to contractors. Instead, it acts as a subcontractor itself—general contractors pay for finished walls, much as they would hire a masonry crew, except the crew is electric, silent, and doesn't break for lunch.
"Construction costs have exploded while the industry itself has barely changed in decades," Vinod Khosla said when the round was announced. It's a familiar refrain from the veteran investor, but the numbers give it weight. The Associated Builders and Contractors estimates the US construction sector must attract 349,000 new workers in 2026 just to hold steady. European labor shortages run parallel, documented in a June 2026 report from EURES, the EU's jobs network. Wages are rising; timelines stretch.
The Palantir Connection
CEO Salar al Khafaji and CTO Sebastiaan Visser aren't construction veterans. They previously built Silk, a data visualization startup that Palantir acquired in August 2016. That lineage shows. Monumental's pitch materials cite Palantir's "forward-deployed engineering" philosophy—embedding technical teams directly alongside clients—as a model for how its engineers operate on construction sites. The comparison isn't accidental. Khafaji and Visser saw how Palantir sold not just software but a way of working, and they've borrowed liberally from that playbook.
The technical stack reflects that background. Monumental's robots integrate electric motors, advanced sensors, and computer vision, all orchestrated by Atrium, a software platform the company built in-house. Atrium handles CAD integration, enterprise resource planning, business intelligence, and robotics control. Job sites are scanned to generate 3D reconstructions aligned to architectural models. Each brick is photographed before and after placement—a requirement under the Netherlands Quality Assurance Act, but also a dataset Monumental uses to refine its systems.
Plural and Others Double Down
The Series B follows a $25 million round in February 2024, co-led by Plural and Hummingbird, with participation from Northzone, Foundamental, NP-Hard Ventures, and Material Ventures. Both Plural and Hummingbird returned for this round, a signal of continued conviction. (In venture capital, follow-on rounds from existing backers often matter more than the headline number.)
Khosla's involvement is perhaps the more interesting development. The firm has a track record in "tough tech"—nuclear energy, carbon capture, lab-grown proteins—sectors where capital intensity and regulatory friction scare off most investors. Construction robotics fits that profile. Monumental will need to navigate differing building codes, union dynamics, and permitting regimes as it crosses the Atlantic. The UK and Netherlands have been relatively welcoming; the US market will be another test entirely.
What Happens Next
Monumental is onboarding its first US pilot partners, though the company has not disclosed which states or specific projects are in the pipeline. With roughly 106 employees as of late July, it's hiring across software, hardware, and operations roles to support the expansion. The company has been careful not to overpromise on timelines, but the implication is clear: 2026 is the year Monumental learns whether its approach works outside Europe's regulatory and cultural context.
The central question isn't whether robots can lay bricks—they demonstrably can. It's whether a venture-backed startup can navigate the messy, relationship-driven, politically complicated world of commercial construction at scale. Monumental has raised the capital to find out. Now comes the harder part.
