Master Building Specialties INC
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersOntario, CA
SAM.gov UEITE44VBYUS2S4
CAGE code47JM9
Incorporated inCA
- bathroom partitions
- fixtures
- lockers
- stainless steel
- Mills
- shower accessories
- toilet accessories
- mirrors
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Master Building Specialties INC | Ontario | CA | — | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.