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 |
|---|---|---|---|---|
| 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 |
| Onspaugh Electric LLC | Electrical | Frederick County | 5 | May 2026 |
| Rachael Pietrzyk | Electrical | Frederick County | 5 | Jul 2026 |
| Robbie Norwood | Electrical | Frederick County | 5 | Jun 2026 |
| RYAN ELECTRIC | Electrical | Howard County | 5 | Jul 2026 |
| TECHMARK CORPORATION | Electrical | Howard County | 5 | Jul 2026 |
| TIM KYLE CO., ELECTRCIAL CONTR | Electrical | Frederick County | 5 | Jun 2026 |
| BRIAN P SHANHOLTZ | Electrical | Frederick County | 4 | Jun 2026 |
| CAMPBELL & SON ELECTRIC | Electrical | Howard County | 4 | Jul 2026 |
| CAPITAL A ELECTRIC | Electrical | Howard County | 4 | Jul 2026 |
| CHARLES A HORN | Electrical | Frederick County | 4 | Jul 2026 |
| Charm City Electric | Electrical | Frederick County | 4 | Jul 2026 |
| DESHAIES ELECTRICAL SERVICES LLC | Electrical | Howard County | 4 | Jul 2026 |
| DONALD L GOWER II | Electrical | Frederick County | 4 | May 2026 |
| ECOMIZE USA LLC | Electrical | Howard County | 4 | Jun 2026 |
| HAAS & SONS ELECTRIC INC | Electrical | Howard County | 4 | Jul 2026 |
| KENNETH A EYLER | Electrical | Frederick 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 |
| Alan D Givens | Electrical | Frederick County | 3 | May 2026 |
| ANYTIME ELECTRICAL SERVICES & CO | Electrical | Howard County | 3 | Jun 2026 |
| ARK SIGNS SERVICES INC | Electrical | Howard County | 3 | Jul 2026 |
| ARTISAN ELECTRICAL | Electrical | Howard County | 3 | Jul 2026 |
| CAA ELECTRICAL SERVICES LLC | Electrical | Howard 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 & C ELECTRIC | Electrical | Howard County | 3 | Jun 2026 |
| COLESVILLE ELECTRIC | Electrical | Howard County | 3 | Jun 2026 |
| Current Power, Inc. | Electrical | Frederick County | 3 | May 2026 |
| DYNAMO ELECTRIC LLC | Electrical | Howard County | 3 | Jun 2026 |
| ELECTRICAL SOLUTIONS BY MCD | Electrical | Howard County | 3 | Jul 2026 |
| Englar Electric LLC | Electrical | Frederick County | 3 | Jun 2026 |
| E. P. ELECTRIC LLC | Electrical | Howard County | 3 | Jun 2026 |
| GEIGAN ELECTRIC | Electrical | Howard County | 3 | Jul 2026 |
| IDEAL ELECTRICAL SERVICES | Electrical | Frederick County, Howard County | 3 | May 2026 |
| INTERCONNECT SERVICES INC | Electrical | Howard County | 3 | Jun 2026 |
| Justin Cantwell | Electrical | Frederick County | 3 | May 2026 |
| LANSTAR SYSTEMS INC | Electrical | Howard County | 3 | Jun 2026 |
| Lumen Brothers Electric Company LLC | Electrical | Frederick County | 3 | Jun 2026 |
| MACKEY ELECTRICAL SERVICES INC | Electrical | Howard County | 3 | Jun 2026 |
| Michael Price | Electrical | Frederick County | 3 | Jul 2026 |
| NOHO ZEPHYR I LLC DBA MICHAEL BONSBY HVAC, PLUMBING, & ELECTRICAL | Electrical | Howard County | 3 | Apr 2026 |
| O'MEARA ELECTRIC LLC | Electrical | Howard County | 3 | Jul 2026 |
Source: county permit records. Updated monthly.