FM newsroom – robotics, construction. Hungary has witnessed a milestone in construction technology: a masonry robot named WLTR successfully built the walls of a residential house in Budapest’s 18th district in under three days. Only four months after its debut in the country, the robot has already proven its potential.
In September 2025, Hungary’s first residential building featuring robot-built load-bearing walls was completed. The WLTR robot, developed through a collaboration between Wienerberger, Czech-based GreenBuild, and KM Robotics, delivered a 100-square-meter family home to structural completion in record time.
Speed, Precision, and Cost Efficiency
“The masonry robot in action is not only impressive but also convincing from an engineering perspective. The speed and precision of execution are at a level difficult to achieve manually. From the contractor’s point of view, this is not just a technological curiosity, but a well-planned, cost-effective, and quality-assured solution,” Tihamér Vracaric, Managing Director of Berill Házépítő Kft., the company responsible for constructing the family house, told Magyarépítők.hu.
Its ability to deliver speed and precision at a level that is nearly impossible for manual labour sets it apart. According to economx.hu, WLTR is more than a technological curiosity — it is a cost-effective, predictable, and quality-assured construction tool.
Capable of building up to 10 square meters of wall per hour and reaching over three meters in height, WLTR matches the output of an entire five-person bricklaying crew.
Designed for Robots, Built for the Future
The robot operates with Porotherm Robot Ready blocks, specially engineered by Wienerberger for mechanical installation. Following blueprints with millimetre precision, WLTR eliminates the risk of human error while ensuring consistent, high-quality results.
The Budapest pilot project has demonstrated that WLTR addresses the industry’s most pressing challenges, including the shortage of skilled labour, the increasing demand for faster and more predictable building, and the sector’s ongoing digital transformation.
Not only does the robot drastically cut construction time, but it also keeps costs competitive compared to traditional building methods.
“We are particularly proud that, following the May demonstration, WLTR has already been able to prove itself in a real construction project in such a short time here in Hungary. The successful live test is a clear sign that the technology is ready for broader application in the country. Our goal is to introduce this solution to as many domestic contractors as possible and to take construction efficiency and digitalisation to a new level,” said János Potos, Member of the Board of Directors responsible for Sales and Marketing at Wienerberger Zrt.
