For decades, “prefab” sounded like an emergency fix or a construction-site cabin. That’s changing fast, and not because of fashion: two recent stories confirm it with hard numbers, one from the world’s largest housing market and one less than 300 kilometers from our offices.
Industrialized Modular Construction Trends
Two stories from the past few weeks — one from the United States, one from Valencia — point the same way: housing is no longer built only on site, but increasingly in a factory.
Last updated: September 2026
This week’s headline data: the US legislates to unblock industrialization
In mid-2026, the US Congress passed a new law requiring the Department of Housing and Urban Development (HUD) to study how to standardize building codes and unlock financing for industrialized housing. The trigger is a housing deficit of roughly 7 million units that traditional construction isn’t closing. And yet in 2024, only 102,700 prefabricated (mobile) homes and 37,528 modular units were completed — industrialized construction still accounts for just 3% of total finished housing in the country. The law itself projects savings of $5,000 to $10,000 per unit, up to 10% of construction cost. The core obstacle isn’t technology: it’s that every municipality runs its own building code, and banks still disburse construction loans in phases, a model that clashes with off-site construction’s need for large upfront factory investment. Sweden and Japan, by contrast, have shown for years that standardized codes let industrialization scale.
Meanwhile, in Spain: a gigafactory in Valencia
On August 6th, it was announced that Casas inHAUS and Cecotec, using automation technology from CMA Machine Tools (Alzira), are driving a gigafactory capable of producing 6,000 homes a year, with up to 95% of each building completed in the factory before reaching the site. The key piece is a robotic cell that automates the treatment of structural beams: “the raw beam enters the machine and, without operator intervention, every operation is carried out,” according to the companies involved. The project sits within the reconstruction effort following the 2024 DANA flooding and a proposed “Industrialization City” at the Port of Valencia’s logistics zone. On a smaller scale, it’s the same answer the US is now legislating toward: producing with factory-level precision what used to depend on weather, on which trade was available that day, and on on-site coordination.
What changes for whoever directs and supervises the project
This is where it gets genuinely interesting for us as engineers: industrialization doesn’t remove technical direction — it shifts it earlier and intensifies it elsewhere. Quality control moves upstream to factory audits; transport and assembly sequencing becomes a critical scheduling variable; and mechanical, electrical, plumbing and home-automation systems must be integrated into the module before it leaves the factory, not improvised afterward. That demands coordinating design, fabrication and site works from day one, not at the end. It also confirms something we apply to every TALAT project: industrializing doesn’t mean giving up tailored design — BREEAM, energy performance, home automation — it means building it into the module stage, studying each building as the unique case it is.
This week’s takeaway
Industrialized construction has promised speed for years. What these two stories show is that the real shift isn’t just pace — it’s where and when technical decisions get made: long before the first crane reaches the site. Is your organization already building off-site manufacturing into how it plans and supervises projects, or still treating it as a catalog curiosity? We’d love to hear your experience in the comments.