| Garaventa Enterprises INC | 414350 | 123 | 80 | Intrastate |
| Mt Diablo Unified School Dist | 2626584 | 112 | 97 | Intrastate |
| California Transport Cal-T California Transportation | 2461679 | 84 | 103 | InterstateHazmat |
| Swinerton Incorporated | 131651 | 83 | 51 | Interstate |
| Independent Construction Company | 632939 | 70 | 24 | InterstateHazmat |
| Electric Tech Construction INC | 2853809 | 65 | 40 | Interstate |
| Bay Cities Paving & Grading INC | 2728459 | 64 | 13 | IntrastateHazmat |
| Teps | 2406539 | 63 | 50 | Interstate |
| Zero Waste Solutions, Inc. | 6554304 | 54 | 35 | Intrastate |
| Seeno Homes | 919108 | 34 | 35 | Interstate |
| Conco Pump - Conco | 1419937 | 34 | 86 | Interstate |
| Enterprise Roofing Service INC | 1157576 | 33 | 41 | Interstate |
| A & J Fencing | 2699766 | 33 | 33 | Intrastate |
| Code 3 Limousine And Transportation | 2758616 | 29 | 46 | Intrastate |
| Food Bank Of Contra Costa And Solan | 2663380 | 28 | 15 | Intrastate |
| Bayside Insulation | 4740524 | 27 | 53 | Intrastate |
| California Shingle & Shake | 2644839 | 23 | 22 | Intrastate |
| Carlton Senior Living LLC | 2764752 | 23 | 10 | Intrastate |
| Mce Corporation | 2611443 | 21 | 10 | Intrastate |
| Contra Costa Water District | 2650776 | 21 | 58 | Intrastate |
| Diablo Telecom & Construction INC | 4215110 | 20 | 25 | Interstate |
| Marlo M Villanueva Ttee | 9888630 | 20 | 8 | Intrastate |
| Janus Corporation | 2626642 | 19 | 13 | Intrastate |
| Unique Scaffold | 2713500 | 19 | 20 | Intrastate |
| Viper Transportation INC | 1509528 | 15 | 15 | InterstateHazmat |
| Valley Relocation And Storage Of Northern California INC | 1659739 | 15 | 9 | Interstate |
| National Tank Lines | 3373801 | 15 | 17 | IntrastateHazmat |
| Tap Master Incorporated | 1428010 | 14 | 14 | Interstate |
| Proclaim Promotions INC | 1621937 | 11 | 13 | Interstate |
| B&d Towing | 2655366 | 11 | 11 | Intrastate |
| Blue Devils Performing Arts | 498795 | 10 | 12 | Interstate |
| Raa LLC | 974579 | 10 | 10 | Intrastate |
| Dmz Builders | 3051794 | 10 | 4 | Intrastate |
| Benchmark Electronics INC | 403598 | 8 | 3 | Interstate |
| K & B Landscape Services INC | 2745086 | 8 | 8 | Intrastate |
| Philco Building Maintenance INC | 3899228 | 8 | 6 | Intrastate |
| American Stage Tours | 253482 | 7 | 13 | Interstate |
| Calitho | 2605118 | 7 | 7 | Intrastate |
| Ned Clyde Construction INC | 2667092 | 7 | 15 | Intrastate |
| Walnut Creek Heating & Air Conditioning | 2776427 | 7 | 21 | Intrastate |
| Mt Diablo Landscape Centers INC | 2885457 | 7 | 6 | Intrastate |
| Ashley Provost Design INC | 3822301 | 7 | 17 | Intrastate |
| Platinum Transports | 2131142 | 6 | 4 | Interstate |
| Devengenzo Company | 2616315 | 6 | 7 | Intrastate |
| Venegas Company INC | 2624832 | 6 | 5 | Intrastate |
| Elegant Limousine Services | 3338709 | 6 | 3 | Intrastate |
| Purchase Green East Bay | 3524622 | 6 | 3 | Intrastate |
| Pab Enterprises LLC | 3540320 | 6 | 1 | Intrastate |
| John Mchugh Towing | 4003825 | 6 | 5 | InterstateHazmat |
| Got Watts Electric Solar & Hvac | 4247980 | 6 | 13 | Intrastate |
| K & B Landscape Services, INC | 6907441 | 6 | 4 | Intrastate |
| Bay Point Towing | 2644479 | 5 | 4 | Intrastate |
| Donado Tree Services | 2697648 | 5 | 6 | Intrastate |
| Economy Medical | 2728463 | 5 | 5 | Intrastate |
| D'ambrosio Trucking | 2738971 | 5 | 5 | Intrastate |
| Anka Behavioral Health INC | 2741924 | 5 | 6 | Intrastate |
| Carone & Company INC | 2744168 | 5 | 4 | IntrastateHazmat |
| Golden Gate Sign Company INC | 2752949 | 5 | 8 | Intrastate |
| Eden Ranch & Farming LLC | 3026043 | 5 | 2 | Intrastate |
| Oscar Landscaping INC | 3091718 | 5 | 4 | Intrastate |
| Apb General Engineering | 3230037 | 5 | 8 | Intrastate |
| Blue Bird Express Cargo LLC | 3292340 | 5 | 13 | Interstate |
| Pacific Plaza Imports INC | 3388785 | 5 | 7 | Intrastate |
| Moneric Equipment Rental INC | 4262055 | 5 | 5 | IntrastateHazmat |
| Waraner Bros Tree Service | 4469357 | 5 | 2 | Intrastate |
| Royal Trucking Company | 135650 | 4 | 7 | Interstate |
| Transforward Freightlines LLC | 1971688 | 4 | 4 | Interstate |
| L H Voss Materials INC | 2046927 | 4 | 2 | Intrastate |
| East Bay Machine & Sheet Metal | 2719900 | 4 | 3 | Intrastate |
| Lloyds Tree Service | 2749047 | 4 | 1 | Intrastate |
| Sf Bay Area Provisions INC | 2810892 | 4 | 6 | Intrastate |
| Ucr LLC | 2985860 | 4 | 2 | Intrastate |
| Allure Limousines And Wine Tour Service LLC | 3062081 | 4 | 4 | Intrastate |
| Cars To Go Towing | 3074158 | 4 | 3 | IntrastateHazmat |
| Reconstruction Services | 3178114 | 4 | 2 | Intrastate |
| Cirino's Landscape And Fencing | 3293983 | 4 | 4 | Intrastate |
| Billet Racing | 3340921 | 4 | 3 | Intrastate |
| The 925 Movers | 3471584 | 4 | 2 | Intrastate |
| Vansandt Plastering INC | 3670527 | 4 | 4 | Intrastate |
| Vigorous Landscaping INC | 3924724 | 4 | 3 | Intrastate |
| Tnh Development LLC | 3928983 | 4 | 5 | Intrastate |
| Blueline Custom Cabinets Blueline Custom Builders | 4063191 | 4 | 4 | Intrastate |
| Walsh Myers Joint Venture | 4063801 | 4 | 4 | Intrastate |
| Martinez Professional Movers INC | 4149809 | 4 | 7 | Interstate |
| Jae Monet LLC | 4179668 | 4 | 1 | Intrastate |
| Cp Freight Transport LLC | 4234595 | 4 | 4 | Intrastate |
| Acustruct | 4350687 | 4 | 1 | Intrastate |
| Flowing Water | 4477674 | 4 | 0 | Intrastate |
| Beer Beer And More Beer | 2615517 | 3 | 4 | Intrastate |
| Golden Stone Pavers | 2647984 | 3 | 2 | Intrastate |
| Park Place Constructors INC | 2662322 | 3 | 1 | Intrastate |
| Roto-Rooter Sewer Service | 2663951 | 3 | 9 | Intrastate |
| Stone Tree | 2703005 | 3 | 3 | IntrastateHazmat |
| Lotus Trucking | 2734922 | 3 | 3 | Intrastate |
| Department Of Leisure Services | 2806854 | 3 | 23 | Intrastate |
| Clark Pest Control Of Stockton, Inc. | 2807307 | 3 | 3 | Intrastate |
| Bbp Demolition INC | 2811308 | 3 | 4 | Intrastate |
| The Moulding Company | 2922659 | 3 | 11 | Interstate |
| El Ranchero Catering | 2940247 | 3 | 3 | IntrastateHazmat |
| 680 Movers | 2950711 | 3 | 5 | Intrastate |