%20-%20SMALL.png)
Panelized Multifamily Construction: A Faster Way to Build 1 to 6 Stories
Apartment construction has stalled. U.S. multifamily starts fell to roughly 55,000 units in the first quarter of 2026. That is the lowest quarterly total since 2011 and a 73% drop from the 2022 peak, according to CoStar and Apartments.com. Financing costs are high. Development costs are higher. Most deals no longer pencil.
Panelized multifamily construction changes the math. Module Building Systems builds finished wall and floor panels in a 40,000 sq ft CNC facility in St. Louis, ships them flat-packed, and assembles them on site. Projects cost up to 30% less, deliver 50% faster, and generate up to 90% less waste.
What panelized multifamily construction is
Panelized construction builds a building's walls and floors in a factory, then assembles them on site. MBS panels arrive finished. Windows, doors, cladding, insulation, sheathing, and MEP are installed before the panel leaves the plant.
This is not volumetric modular. Modular ships finished three-dimensional boxes that need oversize permits, escort vehicles, and wide routes. Panels ship flat-packed and vertically on standard flatbeds, anywhere within 1,000 miles of St. Louis. If you are still weighing the two methods, read our guide to panelized vs. modular vs. stick-built construction.
Why multifamily is the best use case for factory panels
Factories reward repetition. Multifamily is repetition by design.
One unit type, built dozens of times
A 24-unit walk-up is usually two or three unit plans repeated. Once a panel is drawn, engineered, and programmed into the CNC line, every copy after the first is faster and cheaper to produce. Site framing gets no such benefit. The crew frames unit 24 the same way it framed unit 1.
Stacked floors mean stacked panels
In a 1 to 6 story building, floor plates repeat vertically. Panel sets ship sequenced by floor and in assembly order, so the crane picks in the order the building goes up. That removes the need for a lay-down yard the size of the site.
Tight urban sites reward less site work
Infill multifamily sites are narrow and hemmed in. Panelized construction moves most of the labor indoors, which cuts truck traffic, material storage, noise, and the number of trades working on top of each other. See the full range of MBS building products.
The cost case: where up to 30% comes from
Labor moves indoors. Factory crews work at fixed stations, in every season, with less rework and no weather delays.
Waste falls. CNC cutting and controlled inventory produce up to 90% less waste than site framing, so you buy less material and haul away fewer dumpsters.
Schedule shortens. Every month cut from a build is a month of interest, insurance, and general conditions you never pay.
Pricing is fixed. The factory quotes the panel package up front, so the enclosure line in your pro forma stops moving.
For lenders and equity partners, the fixed price often matters as much as the discount. Cost certainty is what makes a deal financeable after two years of escalation broke everyone's underwriting.
The speed case: 50% faster delivery
MBS manufactures a 1,500 sq ft home in one week. On site, that home reaches weather-tight lockdown in 4 days. Multifamily scales the same logic. While the site crew pours foundations and runs utilities, the factory is already building the enclosure.
That parallel path is the whole point. Traditional construction is a relay. Panelized construction runs two tracks at once, then merges them. Faster lockdown also protects the build, because interiors start as soon as a floor is closed in and framing lumber never sits in the rain. Our design-to-assembly services cover the full sequence.
Which multifamily projects fit
MBS builds panelized projects from 1 to 6 stories:
Townhomes and row homes
Walk-up and garden apartments
Mixed-use buildings with ground-floor commercial
Senior and supportive housing
Affordable and workforce housing for CDCs, municipalities, and states
High-density infill on scattered urban lots
Affordable housing is why MBS exists. The company was founded in 2023 and builds from North St. Louis with a mission focused on housing supply, homelessness, and disaster relief. Read more about MBS and the solutions we build for developers and municipalities.
Four questions to ask before you choose panels
Does your design repeat? Repetition is where panelized economics live.
Is your site within 1,000 miles of St. Louis? That is the flat-pack delivery radius.
Do you need price certainty for a lender? Fixed factory pricing is a documentable line in the budget.
Is your schedule carrying interest? If it is, 50% faster delivery is a financing story, not just a construction one.
Frequently asked questions
What is panelized multifamily construction?
Panelized multifamily construction builds the wall and floor panels of an apartment, townhome, or mixed-use building in a factory, then assembles them on site. MBS panels arrive finished, with windows, doors, cladding, insulation, sheathing, and MEP already installed.
How many stories can panelized construction build?
Module Building Systems builds panelized projects from 1 to 6 stories, including townhomes, walk-up and garden apartments, mixed-use buildings with ground-floor commercial, and high-density urban infill.
Is panelized construction cheaper than modular for multifamily?
Panels ship flat-packed and vertically on standard flatbeds, so there are no oversize loads, escort vehicles, or route restrictions. That lowers freight cost and widens the buildable service area compared with volumetric modular boxes. MBS panelized projects cost up to 30% less than traditional construction.
How fast is panelized multifamily construction?
MBS delivers projects up to 50% faster than traditional construction. A 1,500 sq ft home is manufactured in one week and assembled on site to weather-tight lockdown in 4 days. Multifamily projects follow the same parallel schedule, with the factory building the enclosure while the site crew completes foundations.
How far can MBS ship panels for a multifamily project?
MBS ships flat-packed panels vertically on standard flatbeds to project sites within 1,000 miles of its 40,000 sq ft CNC manufacturing facility at 921 N 20th Street, St. Louis, Missouri. More answers are on our FAQ page.
Build your next multifamily project with MBS
The market pulled back because the numbers stopped working. Panelized construction is how you make them work again. Send us your unit mix and site, and we will price the panel package. Get a quote or email info@modulebs.com.
Comments