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ArcelorMittal unveils next-generation steel house prototype

ArcelorMittal’s construction and global R&D divisions in Spain have joined forces with leading Spanish architect Sergio Baragaño to reveal a prototype for a house-of-the-future forged from steel.

Unveiled at ArcelorMittal’s global R&D centre in Asturias, the housing prototype is an example of an alternative approach to construction that generates less waste, improves the safety of construction workers, and produces cutting-edge buildings compliant with the latest safety and energy-efficiency regulation.

Based on Baragaño’s innovative “b home” concept, the prototype uses a pioneering “modular” approach for constructing high-performance homes and offices that deliver value from a cost and resource-efficiency perspective. The structures in the prototype were assembled in a workshop by Madrid-based Prismas, and then transported to the ArcelorMittal R&D site, where construction was completed in just 72 hours.

The prototype features a host of ArcelorMittal steel in the building’s structure, roof, façade, panels, and decking. Produced at ArcelorMittal Asturias, the steel was coated at Lesaka and transformed at the company’s Berrioplano sites. Ondatherm sandwich panels were selected for their aesthetic value and excellent thermal, acoustic and fire resistance.  

“Forged from ArcelorMittal steel, this project showcases the versatility of steel, and demonstrates why the material has a firm place in the home of the future”, said Nicolás de Abajo, ArcelorMittal’s global R&D manager at Asturias.

He added: “Steel’s unique strength and aesthetic properties make it highly desirable to architects and engineers alike, and it will continue to satisfy the construction industry’s need for light, economical structures that meet stringent safety and sustainability criteria”. 

Baragaño’s “b home” approach ensures that housing and office units can be easily extended or adapted to meet a user’s changing requirements. In this way, a one-bed house can be converted into a family residence by simply adding more modules horizontally or vertically. The method also makes it possible to disassemble a building and reinstall it elsewhere.  

Another key characteristic of the “b home” approach is the speed of construction, with the possibility of building a property within four months of commission. 

Baragaño has announced a project to build 800 “b home” houses in Chile, with similar projects planned for Panama and Botswana.


Want to know more?

Watch this making-of video:


Photography: Verónica Carreño,

Video: vuelaonada and undiaenlanieve

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