Sitegeist, a Munich-based construction robotics startup, has raised €4 million in pre-seed funding to deploy automated, AI-enabled modular robots on construction sites and address Europe’s mounting infrastructure repair backlog. The round was co-led by b2venture and OpenOcean, with participation from UnternehmerTUM Funding for Innovators and angel investors including Verena Pausder, Lea-Sophie Cramer, and Alexander Schwörer, alongside additional strategic backers from the construction and robotics sectors.
The company develops automated, AI-enabled modular robots designed to automate concrete renovation. Its technology enables construction companies to increase productivity, improve working conditions, and mitigate skilled labor shortages. Sitegeist says its robots are the first specialized automated systems purpose-built to make large-scale concrete renovation scalable by automating some of the toughest jobs on construction sites.
The funding will be used to build out a world-class team and accelerate on-site deployment of Sitegeist’s robots in response to strong customer demand driven by Europe’s extensive infrastructure renovation needs.
Across Europe, aging bridges, tunnels, parking structures, and public buildings require urgent repair. In Germany alone, the infrastructure repair backlog totals hundreds of billions of euros, with similar challenges across North America and other regions. At the same time, the construction sector faces severe labor shortages, particularly for physically demanding and highly specialized tasks such as concrete renovation.
Unlike conventional automation systems that depend on pre-existing 3D models or standardized environments, Sitegeist’s robots operate directly on existing structures. Using advanced perception systems, AI-based decision support, and adaptive control, the robots can handle complex geometries and varying material conditions without prior digitization, enabling immediate deployment on live renovation sites.
Concrete renovation is one of the most complex and capacity-constrained segments of infrastructure maintenance. Repairing damaged structures requires deteriorated concrete to be selectively removed using high-pressure water or abrasive blasting, a process that demands precision to avoid damaging steel reinforcement underneath. Today, this work is largely manual, site-specific, and difficult to scale. Labor shortages, low efficiency, and increasing safety requirements have left many construction companies fully booked months or years in advance, contributing to significant project backlogs.
Sitegeist works directly with concrete renovation firms on-site and has designed its modular robotic platform to expand across the renovation value chain over time. The company plans to collaborate with additional test sites, co-development partners, and new talent to further validate and refine its systems.
Founded as a spin-out from the Technical University of Munich, Sitegeist emerged from a robotics research institute led by Prof. Matthias Althoff. The company was founded by Dr. Lena-Marie Pätzmann, Julian Hoffmann, Nicola Kolb, and Claus Carste, combining deep expertise in robotics and AI with commercialization experience.
KEY QUOTES:
“Infrastructure renovation is hitting a critical bottleneck, especially in concrete repair. Today, deteriorated concrete is still removed using manually-intensive processes that are hard to scale. We’re tackling this challenge with the first ever specialized automated and modular robots that can perform concrete renovation directly on existing structures. We’re thrilled to have won such renowned investors who share our mission. This backing enables us to move faster in bringing automated renovation to critical infrastructure worldwide.”
Dr. Lena-Marie Pätzmann, Co-founder And CEO, Sitegeist
“The way concrete is removed today by workers is devastating and extremely arduous. This is the perfect case for augmenting humans with robots. What sets Sitegeist apart is its team, which will literally go through walls to bring autonomy into highly unstructured, real-world construction environments. The team combines deep robotics expertise with a pragmatic understanding of how renovation actually works on site, which gives them the potential to define this category.”
Florian Schweitzer, Partner, b2venture
“The most exciting AI-powered robots today don’t have fingers and thumbs. Sitegeist’s non-humanoid robots are purpose-built to solve real-world problems, and their ability to operate in harsh environments with superhuman strength and autonomy is genuinely game-changing. This is exactly the kind of task we want AI to automate: a manual, expensive process with low talent availability. With an aging population and a skills shortage in physical industries like construction, robotics will help us refit our infrastructure for the future – and TUM and Munich have proven this is the one of the best places to build teams to do it.”
Sam Hields, Partner, OpenOcean
