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 |
|---|---|---|---|---|
| CECO, INC | Electrical | Frederick County, Howard County | 84 | Jul 2026 |
| PROVIDENT ELECTRIC | Electrical | Frederick County, Howard County | 26 | Jul 2026 |
| NORTHERN CROSS ELECTRIC INC | Electrical | Howard County | 19 | Jul 2026 |
| ROYAL ELECTRIC INC | Electrical | Frederick County, Howard County | 17 | Jul 2026 |
| EDGE ENERGY DBA EQUITY DEVELOPMENT | Electrical | Howard County | 16 | Jul 2026 |
| KCL ELECTRIC | Electrical | Frederick County, Howard County | 16 | Jul 2026 |
| CLARKSVILLE ELECTRIC LLC | Electrical | Howard County | 15 | Jul 2026 |
| TIM KYLE CO ELECTRICAL SERVICE INC | Electrical | Howard County | 14 | Jul 2026 |
| LONG ELECTRIC LLC | Electrical | Frederick County, Howard County | 12 | Jun 2026 |
| WHITE SPARK ELECTRIC | Electrical | Frederick County, Howard County | 12 | Jul 2026 |
| BOYLAND ELECTRIC INC | Electrical | Frederick County, Howard County | 10 | Jul 2026 |
| MILES ELECTRIC CO INC | Electrical | Frederick County, Howard County | 10 | Jul 2026 |
| REEDY ELECTRICAL SERVICES INC | Electrical | Howard County | 10 | Jul 2026 |
| RENOVATIONS EXPERT INC | Electrical | Howard County | 9 | Jul 2026 |
| Ash Electric LLC | Electrical | Frederick County, Howard County | 8 | Jul 2026 |
| BLUE JAY ELECTRIC CO | Electrical | Howard County | 8 | Jul 2026 |
| CHESAPEAKE ENERGY SOLUTIONS LLC | Electrical | Howard County | 8 | Jul 2026 |
| Shipp Electric | Electrical | Howard County | 8 | Jun 2026 |
| VIBRANIUM ELECTRICAL SERVICES LLC | Electrical | Howard County | 8 | Jul 2026 |
| CECCIO ELECTRIC LLC | Electrical | Howard County | 7 | Jul 2026 |
| CLINTON ELECTRIC CO INC | Electrical | Howard County | 7 | Jul 2026 |
| DAVCON ELECTRICAL SERVICES, LLC | Electrical | Frederick County, Howard County | 7 | Jul 2026 |
| HATZEL & BUEHLER | Electrical | Howard County | 7 | Jul 2026 |
| WADI ELECTRIC | Electrical | Howard County | 7 | Jul 2026 |
| ARK SYSTEMS INC | Electrical | Howard County | 6 | Jun 2026 |
| DIGITAL PROTECTION SERVICES INC | Electrical | Howard County | 6 | Jul 2026 |
| KOLB ELECTRIC INC | Electrical | Frederick County, Howard County | 6 | Jul 2026 |
| NEFF ELECTRICAL SERVICES INC | Electrical | Howard County | 6 | Jun 2026 |
| ARCO ELECTRIC INC | Electrical | Frederick County, Howard County | 5 | Jun 2026 |
| DIXIE ELECTRIC,INC | Electrical | Frederick County, Howard County | 5 | Jul 2026 |
| FRED ORAL ROBERTS THOMPSON | Electrical | Howard County | 5 | Jun 2026 |
| JOSE MENJIVAR LOPEZ | Electrical | Howard County | 5 | Jul 2026 |
| MAGOTHY ELECTRIC CO INC | Electrical | Howard County | 5 | Jul 2026 |
| NATIVE SONS INC | Electrical | Howard County | 5 | Jul 2026 |
| RYAN ELECTRIC | Electrical | Howard County | 5 | Jul 2026 |
| TECHMARK CORPORATION | Electrical | Howard County | 5 | Jul 2026 |
| CAMPBELL & SON ELECTRIC | Electrical | Howard County | 4 | Jul 2026 |
| CAPITAL A ELECTRIC | Electrical | Howard County | 4 | Jul 2026 |
| DESHAIES ELECTRICAL SERVICES LLC | Electrical | Howard County | 4 | Jul 2026 |
| ECOMIZE USA LLC | Electrical | Howard County | 4 | Jun 2026 |
| HAAS & SONS ELECTRIC INC | Electrical | Howard County | 4 | Jul 2026 |
| PLUGG ELECTRIC LLC | Electrical | Howard County | 4 | Jul 2026 |
| RUBIO ELECTRIC, LLC | Electrical | Howard County | 4 | Jun 2026 |
| SECURITY ENGINEERING INC | Electrical | Howard County | 4 | Jul 2026 |
| SYSTCOM INC | Electrical | Howard County | 4 | May 2026 |
| VG ELECTRIC LLC | Electrical | Frederick County, Howard County | 4 | Jul 2026 |
| ACR CONSTRUCTION EDUCATION | Electrical | Howard County | 3 | Jul 2026 |
| Addicks Electric LLC | Electrical | Frederick County, Howard County | 3 | May 2026 |
| ANYTIME ELECTRICAL SERVICES & CO | Electrical | Howard County | 3 | Jun 2026 |
| ARK SIGNS SERVICES INC | Electrical | Howard County | 3 | Jul 2026 |
Source: county permit records. Updated monthly.