Contractors active in Maryland county permit records, grouped from public filings. Counts reflect permits attributed to each firm. Not every filing names a contractor, so counts here are a floor. A firm's actual permit activity is usually higher.
| Contractor | Trade | Counties | Permits | Last active |
|---|---|---|---|---|
| Nova Solar, Inc. | Solar | Frederick County, Howard County | 4 | Jul 2026 |
| OWINGS HOME SERVICES | Deck & Patio | Frederick County, Howard County | 4 | Jun 2026 |
| RICHARD WIVELL | Structural | Frederick County | 4 | Jun 2026 |
| River Valley Construction | Deck & Patio | Frederick County | 4 | Jun 2026 |
| Roofsimple INC dba Solarsimple | Solar | Frederick County | 4 | Apr 2026 |
| SNYDER ELECTRIC INC | Accessory Structure | Frederick County, Howard County | 4 | Jun 2026 |
| SUBURBAN PROPANE | Pool & Spa | Frederick County, Howard County | 4 | Jul 2026 |
| SUPERIOR MECHANICAL SERVICES | Plumbing | Frederick County, Howard County | 4 | Apr 2026 |
| VG ELECTRIC LLC | Electrical | Frederick County, Howard County | 4 | Jul 2026 |
| WALL TO WALL CONSTRUCTION LLC | Deck & Patio | Frederick County, Howard County | 4 | Jul 2026 |
| Zachary Coburn | Accessory Structure | Frederick County | 4 | Jul 2026 |
| Addicks Electric LLC | Electrical | Frederick County, Howard County | 3 | May 2026 |
| Airport View Signs | Sign | Frederick County | 3 | Jun 2026 |
| Alan D Givens | Electrical | Frederick County | 3 | May 2026 |
| ALLMASTER HOME SERVICES | Deck & Patio | Frederick County, Howard County | 3 | Jun 2026 |
| Bayshore Construction Services, LLC | Plumbing | Frederick County | 3 | Jun 2026 |
| BILL-CHARLES W SAUNDERS | Fire Protection | Frederick County | 3 | Apr 2026 |
| Blue Horizon Construction, LLC | Pool & Spa | Frederick County | 3 | Jun 2026 |
| Bradley L Gracey | HVAC | Frederick County | 3 | Jun 2026 |
| Brandon K Shores | Solar | Frederick County | 3 | Jun 2026 |
| BROWNS PLUMBING & HEATING, INC | Plumbing | Frederick County | 3 | Jul 2026 |
| B.T. Plumbing inc. | Plumbing | Frederick County | 3 | Jul 2026 |
| CARLOS M DIAZ-VILLEGAS | Electrical | Frederick County | 3 | Jun 2026 |
| CBS ELECTRIC CO., INC. | Electrical | Frederick County | 3 | Jul 2026 |
| C & D General Construction, Inc. | Deck & Patio | Frederick County | 3 | Jun 2026 |
| Corey's Construction | Plumbing | Frederick County | 3 | May 2026 |
| Current Power, Inc. | Electrical | Frederick County | 3 | May 2026 |
| CURTIS WELLS | Pool & Spa | Frederick County | 3 | May 2026 |
| C.W. Harris Home Improvements LLC | Deck & Patio | Frederick County | 3 | Jul 2026 |
| Dead Rock Contractor Services | Plumbing | Frederick County | 3 | Jun 2026 |
| DECK ARMOR LLC | Deck & Patio | Frederick County | 3 | Jul 2026 |
| Design Innovations | Deck & Patio | Frederick County | 3 | Jun 2026 |
| Easterday-Wilson Water Services, LLC | Plumbing | Frederick County | 3 | Jun 2026 |
| Elite 4 Roofing & Remodeling,LLC | Plumbing | Frederick County | 3 | Jul 2026 |
| Englar Electric LLC | Electrical | Frederick County | 3 | Jun 2026 |
| Flohr Pools Inc | Pool & Spa | Frederick County | 3 | Jul 2026 |
| GARRETT DEVORE | Deck & Patio | Frederick County | 3 | Jul 2026 |
| GREAT DAY IMPROVEMENTS LLC | Deck & Patio | Frederick County, Howard County | 3 | May 2026 |
| Grewe Construction | Deck & Patio | Frederick County | 3 | Jun 2026 |
| GUARDIAN PROTECTION SERVICES | Accessory Structure | Frederick County, Howard County | 3 | Jun 2026 |
| Hart Home Solutions LLC | Structural | Frederick County | 3 | May 2026 |
| HAVEPOWER LLC | Accessory Structure | Frederick County, Howard County | 3 | Jun 2026 |
| Holtzman Propane, LC | Plumbing | Frederick County | 3 | Jun 2026 |
| HURD BUILDERS, LLC | Accessory Structure | Frederick County | 3 | Jun 2026 |
| IDEAL ELECTRICAL SERVICES | Electrical | Frederick County, Howard County | 3 | May 2026 |
| ISFMD LLC DBA VOLK DECK FENCE & PATIO | Deck & Patio | Frederick County, Howard County | 3 | Jul 2026 |
| JAMES M. SCANLON | Accessory Structure | Frederick County | 3 | Apr 2026 |
| Jessica Cramer | Deck & Patio | Frederick County | 3 | Jun 2026 |
| JESSICA HICKMAN | Fire Protection | Frederick County | 3 | Jul 2026 |
| JOHNSTON ELECTRIC | Pool & Spa | Frederick County, Howard County | 3 | Jul 2026 |
Source: county permit records. Updated monthly.