They Built a 26-Story Tower in Five Days. So Why Is Your Rent Still Going Up?

Something may have crossed your feed in the last year or two and got filed somewhere between "cool" and "vaguely hopeful." A company called Broad Group built a 26-story residential tower in Hunan Province, China, in five days. On January 7, 2024, workers started setting modules for the Jingdu Holon Building. By January 11, it was standing: 208 furnished apartments, roughly 150,000 total sq. ft., and also with electricity and water ready to connect.

Sounds pretty amazing, right? The obvious question is why can't or don’t we do that here. We're short millions of homes, and the affordability crisis isn't improving. If someone figured out how to build a tower in a week, shouldn't that matter more?

Worth noting before we go further: the five days was the on-site assembly phase only. Broad says each unit left the factory already finished, with wiring, ventilation, windows, interior finishes, even furniture all in place. The viral clips don’t mention the months of factory work which came first to make that rapid final assembly possible.

We've covered housing affordability and related issues plenty. We haven't spent much time on how housing actually gets built, and what it would take to change that. This week, that's the focus.

Grab a snack or beverage, and let’s dig into the real issues with housing construction.

-Brandon S.

American high-rise housing runs on reinforced concrete and conventional steel, both assembled outdoors over months. Broad's Holon modules swap that for stainless steel panels produced in a controlled factory environment: faster, more precise, and founded on lessons from the 2008 Sichuan earthquake. Take Broad's boldest longevity claims as marketing, but the durability-plus-speed pitch is credible.

There's a U.S. supply-chain angle here too: a meaningful modular push would compete for the same steel that automakers, data centers, and infrastructure projects already need, all while tariffs continue reshaping domestic mill capacity.

Think of modular as the IKEA model for housing, except the furniture was fully assembled at the warehouse before it shipped. Traditional stick-built construction turns the job site into the factory, with sequential subcontractors and weather-dependent quality control. Modular moves most of that work into a climate-controlled plant and leaves the site to handle final assembly only.

Broad claims their factory can produce roughly one module every 21 minutes at peak, though this is a company-reported figure with no independent verification. The U.S. already has a working proof of concept: citizenM Seattle (opened 2020) stacked 264 prefab hotel rooms over 89 days, with Mortenson estimating it ran substantially faster than a conventional build and generated about 60% less construction waste. American regulators and insurers approved it. The model works here. It just hasn't scaled.

On cost: the factory box is only part of what you're paying for. Industry cost guides generally put factory production at roughly 60% of a modular project's total budget. Land, site prep, permits, foundations, utilities, and local inspections make up the rest, and are just as slow, regardless of assembly time.

The household question is simple: does my rent or mortgage go down? Maybe, over time, if several other things also move. Faster builds reduce carrying cost (the interest, insurance, and overhead a developer keeps paying on an unfinished project), and more units coming online sooner eases supply pressure. Those savings are real but modest against a gap measured in millions of homes.

The remaining costs made of land, zoning, utilities, financing don't change simply because the boxes arrived faster. Modular pricing in 2026 typically lands in the same ballpark as stick-built, once site costs are included. The near-term wins are more likely in student housing, disaster rebuilds, backyard ADUs (a second dwelling unit on an existing residential lot), and infill apartments in places where local rules have recently loosened.

This is where the Hunan demo runs into American reality. Permanent modular housing must meet the same codes as site-built construction under the International Residential Code, which means inspections at the factory and again on site. Some local rules have genuinely loosened in recent years, but modular projects still need separate approvals for crane paths, truck routes, and module dimensions. A signed contract near Akron wouldn’t automatically make it past a city council fight in a denser market.

Labor adds friction too: the trades are organized around site work, and moving hours into a factory disrupts how that work is distributed and paid. Financing has improved, but "prefab" still carries a resale stigma in some markets that keeps lenders and appraisers cautious.

The bottom line: America's housing challenge isn't primarily a technology problem. It's a “veto-stack” problem. Every checkpoint beyond the factory floor can slow or stop the job.