Advanced panelized construction · St. Louis, MOWe build your walls and floors in our St. Louis factory

CNC-cut, wood-framed wall panels and floor cassettes for homes, rowhomes and buildings up to six stories. We ship them flat. Your builder sets them on your foundation, weather-tight in days, not weeks.

Get a fixed-price estimate Book a factory tour

Stick-built, not modular
Fixed factory price
Your drawings or ours

Who are you building for?

The Skyline (MBS-SFH-2266), a three-story, 16-foot-wide panelized home with a rooftop terrace on a St. Louis street at dusk, MBS concept rendering

The Skyline · Concept rendering

Construction schedule

Up to50%quicker

Panels are built while your foundation goes in.

Lower project cost

Up to30%

Fixed factory price at contract

Quicker construction schedule

Up to50%

Factory and site work run in parallel

Less waste

Up to90%

Offcuts stay in the plant

Standard delivery range

1,000mi

We ship anywhere in America by project

Building height

6stories

Wood-framed, 1 to 6 stories

CNC plant

40,000ft²

921 N 20th Street, St. Louis

Compared with traditional construction. Results depend on project scope, approvals, site readiness, materials and logistics.

Selected for the City of St. Louis Infill RFP
2023 Arch Grants recipient
Member, Modular Building Institute
Ranken Technical College workforce partner

In the news:The Wall Street Journal · St. Louis Post-Dispatch · St. Louis Business Journal · First Alert 4

Greater Ville Infill · The Ville, North St. Louis

The first home in The Ville, assembled in days, not weeks

The City of St. Louis selected MBS through its Infill Housing RFP to build single-family and row homes on city-owned lots in The Ville. The first home's wall panels left our plant closed, with insulation, a weather barrier and windows in. Here is how it went up.

Contract: $3.23M
Status: On-site assembly
Designs · concept renderings: The Malone The Malone Rowhomes

In our plant
01 · Fri, Oct 23
Closed wall panels finished, stored and ready to ship Monday
On the lot
02 · Mon, Oct 26
Floor cassettes set on the foundation
Plant to lot
03 · Tue, Oct 27 · morning
Panels leave the plant on a flatbed. The crane sets the first walls.
On the lot
04 · Tue, Oct 27 · late morning
First-floor walls standing, windows in
On the lot
05 · Wed, Oct 28
Two-story shell standing, windows in on both floors

Read the day-by-day story See our projects

In production now: the second single-family home, then The Malone Rowhomes. $12M+ in projects in 2026.

Compared with traditional construction. Results depend on project scope, approvals, site readiness, materials and logistics.

How it works

From your drawings to a weather-tight frame

Panelized means the framing is built in a factory instead of on your lot. The finished building is the same wood frame your lender, appraiser and inspector already know.

01
Send drawings, or start from ours
Fixed price, valid 30 days
Send permit-ready plans and a site address. No plans yet? Our design team starts from your lot.
02
We build while your foundation goes in
CNC-cut in St. Louis
Panels are cut, framed and closed in our plant to the scope you pick. Your site work runs at the same time.
03
Your builder sets the panels
Weather-tight in days, not weeks
Panels ship flat on standard trucks. Your GC sets them on your foundation. MBS installation is available by agreement.

The CNC crosscut saw cutting a framing member to length at the MBS plant in St. Louis, the operator at the control screen — Our CNC crosscut saw

See the full process New to panelized? Read the guide

Who we serve

Built for the people who build housing

Pick your role. Each section shows what changes for you and what to send us first.

Developers and owners

Lock your panel cost before you break ground.

Fixed factory price, valid 30 days, freight priced in
Panels are built while the foundation goes in, so you carry the loan for less time

For developers

Builders, GCs and framers

Keep your crew. Hand them a faster frame.

Buy framing only, sheathed panels or closed panels
Fewer weather days. Interior trades start in a dry building.

For builders and framers

Cities, CDCs and nonprofits

Turn public land into occupied homes.

Selected for the City of St. Louis Infill RFP
Built to your adopted code. One plant, one schedule across scattered sites.

For cities and nonprofits

Disaster relief and recovery

Rehouse families faster after a storm.

Panels ship flat on standard trucks, anywhere in America
Closed panels go up weather-tight in days, not weeks

For relief and recovery

Three ways to work with MBS

Pick the scope. We hold the price.

Every package is built to your approved drawings and priced as one fixed factory number.

Done on site, not in the package

Foundation, site work, utilities, interior gypsum, taping, paint and finishes. Your GC sets the panels and completes the building. MBS installation is available by agreement.

Compare packages

Standard closed package

Sheathing, WRB, insulation, air barrier, windows, doors, cladding and MEP rough-in are factory-installed to the agreed scope. Your GC leads panel setting and coordinates the follow-on trades.