| FMFLOFORM Mesa | Meridian | 100–499 | ◐ LIKELY ACTIVE |
| GBGlaz-tech Boise | Boise | 20–99 | ◐ LIKELY ACTIVE |
| GLGreg L Hoskins | Blackfoot | — | ◐ LIKELY ACTIVE |
| IFIdaho Falls Idaho | Idaho Falls | 20–99 | ◐ LIKELY ACTIVE |
| IMIdaho Meridian 3540 E Lanark Street | Meridian | 1–19 | ◐ LIKELY ACTIVE |
| IKIMC - Ketchum/Bellevue | Bellevue | 1–19 | ◐ LIKELY ACTIVE |
| IMIMC- Mountain Home | Mountain Home | 1–19 | ◐ LIKELY ACTIVE |
| JBJoplin Boise, Idaho | Boise | 20–99 | ◐ LIKELY ACTIVE |
| NRNational Ready Mix - R-118 Idaho Falls | Idaho Falls | 20–99 | ◐ LIKELY ACTIVE |
| PMPocatello Memorial Monuments | Pocatello | 20–99 | ◐ LIKELY ACTIVE |
| SCSEK Corporation / Thompson | Caldwell | 1–19 | ◐ LIKELY ACTIVE |
| SSSoda Springs Ready Mix | Soda Springs | 1–19 | ◐ LIKELY ACTIVE |
| SSSprout Services LLC | Soda Springs | — | ◐ LIKELY ACTIVE |
| TFTwin Falls Ready Mix | Twin Falls | 20–99 | ◐ LIKELY ACTIVE |
| TTTucker Technical Solutions, INC. | Idaho Falls | — | ◐ LIKELY ACTIVE |
| 3L3bw LLC | Challis | — | ◇ UNVERIFIED |
| AGAdvanta Granite & Stone, LLC | Garden City | — | ◇ UNVERIFIED |
| APAmcor Precast | Idaho Falls | — | ◇ UNVERIFIED |
| ATArtistic Tile & Granite INC | Meridian | — | ◇ UNVERIFIED |
| ASAtlantic Stone | Meridian | — | ◇ UNVERIFIED |
| BSBoise Stone, INC. | Boise | — | ◇ UNVERIFIED |
| CACasa Antigua, LLC | Rigby | — | ◇ UNVERIFIED |
| CPCentral Pre-mix 00330 | Idaho | — | ◇ UNVERIFIED |
| CPCentral Pre-mix Site | Coeur D Alene | — | ◇ UNVERIFIED |
| CMClassic Marble & Granite, INC. | Pocatello | — | ◇ UNVERIFIED |
| CSClassic Stoneworks, LLC | Jerome | — | ◇ UNVERIFIED |
| CCClearwater Concrete, INC. | Kooskia | — | ◇ UNVERIFIED |
| CCConsolidated Concrete Joplin Road | Garden City | — | ◇ UNVERIFIED |
| CRCooper Ready Mix 00314 | Salmon | — | ◇ UNVERIFIED |
| CCCornerstone Concrete Services LLC | Boise | — | ◇ UNVERIFIED |
| CDCpm Development CORP 00392 | Portable | — | ◇ UNVERIFIED |
| CMCreative Mines LLC | Malad City | — | ◇ UNVERIFIED |
| CDCurb Design, LLC | Pocatello | — | ◇ UNVERIFIED |
| CECutting Edge Kitchens LLC | Garden City | — | ◇ UNVERIFIED |
| DGD&a Glass Company, INC. | Boise | — | ◇ UNVERIFIED |
| DWDaulton Woodworks | Moscow | — | ◇ UNVERIFIED |
| DRDickson Ready Mix Concrete LLC | Kamiah | — | ◇ UNVERIFIED |
| DRDixie River Dba Gb Rock Sand & Gravel | Caldwell | — | ◇ UNVERIFIED |
| FPFreeman Pit | Post Falls | — | ◇ UNVERIFIED |
| HCHells Canyon Art Glass INC | Lewiston | — | ◇ UNVERIFIED |
| HCHeritage Cabinets & Granite | Pocatello | — | ◇ UNVERIFIED |
| IWIcco Wendell | Wendell | — | ◇ UNVERIFIED |
| ICIdaho Concrete CO 00034 | Idaho | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company Emmett | Emmett | — | ◇ UNVERIFIED |
| ICIdaho Concrete Site | Nampa | — | ◇ UNVERIFIED |
| IGIdaho Granite Works | Naples | — | ◇ UNVERIFIED |
| IMIdaho Materials and Construction | Mountain Home | — | ◇ UNVERIFIED |
| IMIdaho Materials & Construction Amyx | Boise | — | ◇ UNVERIFIED |
| IMIdaho Minerals, L.l.c. | Malad City | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt | Oldtown | — | ◇ UNVERIFIED |