| Reid And Reid INC | 605096 | 40 | 41 | Interstate |
| Morgan E Russell INC | 541579 | 31 | 9 | IntrastateHazmat |
| Chip's Transport | 357367 | 21 | 9 | Interstate |
| Concrete Walls Incorporated | 341670 | 15 | 5 | Intrastate |
| Jones School Bus Service LLC | 2201212 | 14 | 11 | Intrastate |
| Reid's School Bus Service INC | 1525215 | 13 | 12 | Intrastate |
| S J Johnson INC | 967278 | 12 | 6 | IntrastateHazmat |
| Granados Farms INC | 890667 | 7 | 4 | Interstate |
| R E Sheehi Trucking & Paving LLC | 666307 | 6 | 5 | InterstateHazmat |
| Spences Tree Service | 2084420 | 6 | 5 | Intrastate |
| Advanced Sealcoating | 3528166 | 6 | 4 | Intrastate |
| Calvert Auto Top Hat Party | 4382419 | 6 | 9 | Intrastate |
| R & R Delivery INC | 798234 | 5 | 4 | Interstate |
| J & S Long Construction CO INC | 1399426 | 5 | 5 | Intrastate |
| Calvert Auto Top Hat Party | 1651432 | 5 | 4 | IntrastateHazmat |
| Paul C Hayden Jr & Sons Plumbing & Heating INC | 1355809 | 4 | 3 | Intrastate |
| Glover's Septic Services INC | 1530719 | 4 | 4 | Intrastate |
| Free State Contracting CO INC | 2642836 | 4 | 2 | Intrastate |
| Stephen Hayden Plumbing Well Septic LLC | 3008558 | 4 | 2 | Intrastate |
| Tree Services Of Maryland LLC | 3343649 | 4 | 2 | Intrastate |
| Hayden Paving LLC | 3449236 | 4 | 7 | Intrastate |
| Odyssey Mobile Escape Rooms | 3730522 | 4 | 4 | Interstate |
| G E Mckinley CO INC | 374585 | 3 | 3 | Interstate |
| Ellis Taylor Trucking | 734932 | 3 | 1 | Interstate |
| Fuel Tech INC | 1230581 | 3 | 3 | Intrastate |
| Herbert's Quality Mowing & Lawncare | 1373006 | 3 | 2 | Intrastate |
| Castillos Framing INC | 1440946 | 3 | 3 | InterstateHazmat |
| G & B Services LLC | 1535021 | 3 | 3 | Intrastate |
| Farm Valley LLC | 1576979 | 3 | 2 | Intrastate |
| Gorman And Sons Landscaping LLC | 2258247 | 3 | 3 | Interstate |
| Advanced Sealcoating INC | 2328176 | 3 | 3 | Intrastate |
| All American Towing And Recovery INC | 3027334 | 3 | 2 | IntrastateHazmat |
| Bay Area Lawn Care | 3818226 | 3 | 3 | Intrastate |
| Hayden's Septic INC | 4002617 | 3 | 2 | Intrastate |
| Blackburn Welding & Iron Works INC | 4205274 | 3 | 6 | InterstateHazmat |
| Tall Pines Landscaping LLC | 6099392 | 3 | 1 | Intrastate |
| Eastport Transportation And Photos | 6873857 | 3 | 4 | Interstate |
| Hatcher Trucking | 270428 | 2 | 1 | Interstate |
| Franklin G & Bryan H Wood | 344274 | 2 | 2 | Intrastate |
| Holland Contracting Corp | 835745 | 2 | 2 | Intrastate |
| Cynthia W Debosky | 1018704 | 2 | 2 | Intrastate |
| Kaine Communities | 1037856 | 2 | 2 | Intrastate |
| Marks Lawn Service INC | 1207285 | 2 | 3 | Intrastate |
| Lawn Enforcement | 1235776 | 2 | 1 | Intrastate |
| Accessible Construction Supply INC | 1314046 | 2 | 4 | Interstate |
| Kdm Transport INC | 1430911 | 2 | 3 | Intrastate |
| Derco Enterprise INC | 1465161 | 2 | 1 | Intrastate |
| Rrh Associates LLC | 1512418 | 2 | 1 | Intrastate |
| John D Ray And Sons | 1517318 | 2 | 2 | Intrastate |
| Rpm Automotive | 1564570 | 2 | 2 | Intrastate |
| Shaw Electric Service | 1579261 | 2 | 2 | Intrastate |
| Manning Construction INC | 1679424 | 2 | 2 | Intrastate |
| South Paw Masonry INC | 1768940 | 2 | 2 | Intrastate |
| Olde Tyme Craftsmen INC | 1988809 | 2 | 2 | Intrastate |
| Nej Exc | 2117156 | 2 | 2 | Intrastate |
| Mk Tools LLC | 2540091 | 2 | 2 | Intrastate |
| Peluzzo Exotic Transport LLC | 2871985 | 2 | 2 | InterstateHazmat |
| Fixed Right & Guaranteed, LLC | 2885050 | 2 | 2 | Intrastate |
| Grant Transport Services LLC | 3089206 | 2 | 2 | InterstateHazmat |
| Wright's Petroleum LLC | 3237313 | 2 | 1 | Interstate |
| Beltsville Lawn Services | 3365579 | 2 | 1 | Intrastate |
| Creative Roll Off And Hauling LLC | 3582847 | 2 | 1 | Intrastate |
| Franklins Lawn And Landscape | 3728828 | 2 | 1 | Intrastate |
| Murphy Development LLC | 3734756 | 2 | 1 | Interstate |
| Mattera Excavating And Hauling LLC | 3738370 | 2 | 1 | Intrastate |
| Dmh Plumbing & Excavating LLC | 3759339 | 2 | 1 | Intrastate |
| Windsor Equipment Rental | 4021550 | 2 | 2 | Intrastate |
| Elite Excavating & Septic Service LLC | 4511748 | 2 | 1 | IntrastateHazmat |
| G & S Electrical Services INC | 4557207 | 2 | 2 | Interstate |
| Best Generator, LLC | 8548136 | 2 | 2 | Interstate |
| M & M Excavating INC | 475520 | 1 | 1 | Intrastate |
| Huntingfields Farm | 496149 | 1 | 1 | Intrastate |
| J & T Hauling | 512900 | 1 | 1 | Intrastate |
| Scheibel Construction | 553487 | 1 | 2 | Interstate |
| Rnz Excavating INC | 630313 | 1 | 1 | Intrastate |
| Dave Peay Tools | 698468 | 1 | 1 | Intrastate |
| M A Allen | 744770 | 1 | 1 | Intrastate |
| Floor Systems INC | 788259 | 1 | 1 | Interstate |
| Joseph S Fabian | 1000548 | 1 | 1 | Interstate |
| Patrick Sharkey | 1011418 | 1 | 2 | Intrastate |
| W W Reid Masonry | 1055160 | 1 | 1 | Intrastate |
| Paiz Trucking | 1200327 | 1 | 1 | Intrastate |
| Tj's Landscape | 1214240 | 1 | 2 | Intrastate |
| Shore Assets LLC | 1246181 | 1 | 1 | Intrastate |
| Nice Construction | 1337013 | 1 | 1 | Intrastate |
| D & P Towing LLC | 1381539 | 1 | 1 | Intrastate |
| Baldwin Remodeling LLC | 1407154 | 1 | 1 | Intrastate |
| Certified Maintenance Company INC | 1412995 | 1 | 6 | Intrastate |
| Potomac Insulation & Drywall | 1428612 | 1 | 2 | Interstate |
| C L Holland Enterprise | 1435911 | 1 | 1 | Intrastate |
| J T Tree Removal | 1439307 | 1 | 1 | Interstate |
| Gary D King INC | 1454258 | 1 | 1 | Intrastate |
| Southern Maryland Paving And Sealcoating | 1461108 | 1 | 1 | Intrastate |
| Outerscapes Landscaping & Nursery INC | 1463825 | 1 | 1 | Intrastate |
| Stallings National Enterprises INC | 1468320 | 1 | 1 | Intrastate |
| Q' S Construction | 1470766 | 1 | 1 | Intrastate |
| Larry S Freeland T A Pride Works | 1480367 | 1 | 1 | Intrastate |
| M & J Backhoe Service | 1497065 | 1 | 1 | Intrastate |
| L E Wilson Services | 1512019 | 1 | 2 | Intrastate |
| Ferguson Masonry | 1553743 | 1 | 1 | Intrastate |