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 |
|---|---|---|---|---|
| JES CONSTRUCTION INC | Structural | Frederick County, Howard County | 16 | Jul 2026 |
| ASC HEATING AND AIRCONDITIONING INC | Structural | Howard County | 13 | Jun 2026 |
| ANCHOR MECHANICAL LLC | Structural | Howard County | 12 | Jun 2026 |
| MARYLAND MECHANICAL SYSTEMS INC. | Structural | Howard County | 10 | Jul 2026 |
| FIDELITY ENGINEERING, LLC | Structural | Howard County | 9 | Jul 2026 |
| Fortress Foundation Solutions | Structural | Frederick County, Howard County | 7 | Jul 2026 |
| Pole Buildings Plus | Structural | Frederick County | 7 | Jul 2026 |
| BUILD AND DESIGN CONSTRUCTION INC | Structural | Howard County | 5 | Jul 2026 |
| MAYNE MECHANICAL LLC | Structural | Howard County | 5 | May 2026 |
| CLARKSVILLE HEATING & AIR, LLC | Structural | Howard County | 4 | Jul 2026 |
| Kitchen & Bath Shop | Structural | Frederick County | 4 | Jun 2026 |
| RICHARD WIVELL | Structural | Frederick County | 4 | Jun 2026 |
| BELTWAY AIR CONDITIONING & HEATING | Structural | Howard County | 3 | Jul 2026 |
| Hart Home Solutions LLC | Structural | Frederick County | 3 | May 2026 |
Source: county permit records. Updated monthly.