Porta-fab CORP

What they make

• prefabricated modular building systems
• interior applications
• offices
• cleanrooms
• enclosures
• framing systems
• climate control
• doors
• lighting
• wall panels
• windows
• ceiling

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
OCOrchard Corporation	Chesterfield	Corrugated and Solid Fiber Box Manufacturing 322211	◇ UNVERIFIED	0.0 KM
CCorrpak	Chesterfield	Sheet Metal Work Manufacturing 332322	◐ LIKELY ACTIVE	0.3 KM
MLMachine Laboratory LLC	Chesterfield	Sheet Metal Work Manufacturing 332322	◇ UNVERIFIED	1.5 KM
Sheds Direct Stores, LLC	Weldon Spring	Prefabricated Metal Building and Component Manufacturing 332311	◐ LIKELY ACTIVE	4.7 KM
RERustique Enterprises INC	O'fallon	Sheet Metal Work Manufacturing 332322	◇ UNVERIFIED	8.5 KM

Every listed plant in St. Louis County

Also at this address

1 other record shares this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.

Where this record comes from

4 sources hold this plant, and 12 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• SAM.gov entity registrationOPERATING
  Record FPARVAM4Z7Q1 · first seen MAY 2026 · last seen MAY 2026
• DOL Form 5500 retirement plan filingsOPERATING
  Record 431187149|MO|63005|18080 chesterfield airport rd · first seen DEC 2024 · last seen DEC 2024
• SBA Paycheck Protection Program loan recordsEXISTENCE
  Record MO|chesterfield|18080 chesterfield airport rd · first seen JAN 2021 · last seen JAN 2021

IN ST. LOUIS COUNTY39 other plants share this one’s industry (Architectural and Structural Metals Manufacturing, NAICS 3323); 19 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

SAM.gov: PORTA-FAB CORP · MAY 2026

Street address

SAM.gov: 18080 CHESTERFIELD AIRPORT RD · MAY 2026

City

SAM.gov: CHESTERFIELD · MAY 2026

State

SAM.gov: MO · MAY 2026

Coordinates

Census geocoder: 38.669660641761,-90.639014340037 · JUL 2026

Employees (band)

DOL: 20-99 · DEC 2024

Website

SAM.gov: http://www.portafab.com · MAY 2026

CAGE code

SAM.gov: 54951 · MAY 2026

Retirement plan filing (Form 5500)

DOL: 26 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024

PPP loan

SBA PPP: PPP loan x2, approved 2021-01-29, 48 jobs reported · JAN 2021

SAM registration expires

SAM.gov: 2027-04-22 · MAY 2026

State business registrationSOURCES DISAGREE

CT SOTS: PORTA-FAB CORPORATION, registered with the Connecticut Secretary of the State; Corporation formed in Delaware; registered 1984-02-22; revoked 1993-10-01 · OCT 1993

TX Comptroller: PORTA-FAB CORPORATION, registered with the Texas Comptroller of Public Accounts; Corporation; registered 2007-07-31; active · JUL 2007