| Intellecom Communications Inc | B-2 | Active |
| Ironwood Construction LLC | B-2 | Active |
| Itecbuilders LLC | B-2 | Active |
| J & F Building Co | B-2 | Active |
| J & F Construction LLC | B | Active |
| J & J Contracting LLC | B-2 + B-6 | Active |
| J & J Enterprises Services Inc | A | Active |
| J & J Enterprises Services Inc | B-2 | Active |
| J & L Construction | B-2 | Active |
| J A Tiberti Construction Company Inc | AB | Active |
| J C Companies LLC | B-2 | Active |
| J D Stairs Inc | B-2 | Active |
| J G Enterprises | B-2 | Renew by Dec 31, 2026 |
| J H Construction LLC | B-2 | Active |
| J K L Development Inc | B-2 | Renew by Nov 30, 2026 |
| J L A Construction LLC | B-2 | Active |
| J L R Construction LLC | B-2 | Active |
| J M S Contractors Inc | B | Active |
| J N J Engineering Construction Inc | A | Renew by Nov 30, 2026 |
| J P M Construction LLC | B-2 | Active |
| J Peery Construction Inc | B-2 | Active |
| J T Contracting | B-2 | Renew by Dec 31, 2026 |
| Jab Construction Inc | A | Active |
| Jabco US Inc | A | Renew by Dec 31, 2026 |
| James & Associate General Contractors | B | Active |
| James Development Corporation | B | Active |
| James H Abell Inc | B-2 | Active |
| Jax Construction And Consulting LLC | B-2 | Active |
| Jays Contracting LLC | B-2 | Active |
| Jcslv LLC | B-2 | Active |
| JDS Plumbing & Mechanical | A | Active |
| Jerezee Construction Inc | B-2 | Active |
| Jerry Ramsey Construction Inc | B-2 | Active |
| Jetstream Construction Inc | B-2 | Active |
| Jewel Homes | B-2 | Active |
| Joseph Whatley LLC | B-2 | Active |
| Jr2 Constructors LLC | A | Active |
| JRG Enterprise LLC | B-2 | Renew by Dec 31, 2026 |
| Juliet Property Company | B | Active |
| Juve Gonzalez & Sons Inc | B-2 | Active |
| K & Aa Consulting Contracting LLC | B-2 | Active |
| K A S Construction & Development Co Inc | B-2 | Active |
| K B Home Las Vegas Inc | B-2 | Active |
| K C Maintenance Inc | B-2 | Active |
| K Construction Incorporated | A | Active |
| K L A Construction & Development | B | Active |
| K M G Solutions Inc | B-2 | Active |
| K M K General Contractors | B | Active |
| K O Builders, LLC | B-2 | Active |
| K S Kitchen And Bath Studio LLC | B-2 | Active |
| K V M A Construction LLC | B-2 | Active |
| Kalb Construction | B | Active |
| Kalb Construction Company | AB | Active |
| Kalb Industries Of Nevada LTD | A | Active |
| Kanmi Construction LLC | B | Active |
| Karst Construction Services LLC | B-2 | Active |
| Kays Construction LLC | B-2 | Active |
| KCB Consulting LLC | B-2 | Active |
| Keenan Hopkins Suder & Stowell Contractors Inc | B | Active |
| Kelleher Davis Contracting LLC | B | Active |
| Kenvin Construction Co | B | Active |
| Keystone Remodeling LLC | B-2 | Active |
| Kim Construction & Associates LLC | B-2 | Active |
| Kingdom & Co LLC | B-2 | Active |
| Kinsmen Capital And Construction | B-2 | Active |
| Kitchen & Bath Remodeling Las Vegas | B-2 | Active |
| Kittrell Jensen Contractors LLC | B | Active |
| Knipp Contracting Of Nevada LLC | B | Active |
| Koplin Construction Inc | B-2 | Renew by Nov 30, 2026 |
| Kor Building Group LLC | B | Active |
| Korte Company (The) | AB | Active |
| Krystal Development Company Inc | B-2 | Active |
| L C & D Construction Inc | B-2 | Active |
| L C D Corp | B-2 | Active |
| L F Harris And Company Inc | B-2 + B-6 | Active |
| L G I Homes Nevada LLC | B-2 | Active |
| L I A Construction LLC | B-2 | Active |
| L J & T Construction Services LLC | B-2 | Active |
| L M Construction Co LLC | B-2 | Active |
| L S Solutions LLC | B | Active |
| L T R D Development | B-2 | Active |
| L V Restoration & Plumbing Inc | B-2 | Active |
| Lafargo Builders | B | Active |
| Landon Miller Homes; Junkco Plus | AB | Active |
| Lands West Builders Inc | B-2 | Active |
| Larson & Associates Building Company LLC | B | Active |
| Las Vegas Construction Services LLC | B-2 | Active |
| Las Vegas Custom Builders | B-2 | Active |
| Las Vegas Paving Corporation | AB | Active |
| Launch Development And Investment Inc | B-2 | Active |
| Lawrence Homes & Development Corp | B-2 | Active |
| Level Builders LLC | B-2 | Active |
| Lewis K Asphalt LLC | A | Active |
| Lewis K Construction LLC | B | Active |
| Lewis Management Corp | B | Active |
| Lewis Operating Corp | B | Active |
| Lewton Construction | B-2 | Active |
| Life Contracting LLC | B | Active |
| Life Contracting LLC | A | Active |
| Little Mountain Development LLC | B-2 | Active |