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 |
|---|---|---|---|---|
| PARADISE ENERGY SOLUTIONS LLC | Solar | Howard County | 4 | Jul 2026 |
| PAUL VINCENT WOODS | Plumbing | Howard County | 4 | Jun 2026 |
| PLUGG ELECTRIC LLC | Electrical | Howard County | 4 | Jul 2026 |
| PLUMBING MASTERED, LLC | Plumbing | Howard County | 4 | Jul 2026 |
| PMC SERVICE LLC | Plumbing | Howard County | 4 | Jul 2026 |
| POWER FACTOR LLC | Solar | Howard County | 4 | May 2026 |
| PUMPHREY PLUMBING LLC | Plumbing | Howard County | 4 | Jun 2026 |
| RAPID ROOTER PLUMBING COMPANY | Plumbing | Howard County | 4 | Jul 2026 |
| RICHARD VINCENT CAMPBELL | Deck & Patio | Howard County | 4 | Jun 2026 |
| R. L. THOMPSON ELECTRIC CONTRACTORS INC | Accessory Structure | Howard County | 4 | Jul 2026 |
| RUBIO ELECTRIC, LLC | Electrical | Howard County | 4 | Jun 2026 |
| SCOTT ERIC ANTKOWIAK | Site | Howard County | 4 | Jul 2026 |
| SECURITY ENGINEERING INC | Electrical | Howard County | 4 | Jul 2026 |
| SIGN LED SOLAR LLC | Sign | Howard County | 4 | Jun 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 |
| SYSTCOM INC | Electrical | Howard County | 4 | May 2026 |
| THE WHITING TURNER CONTRACTING COMPANY | Howard County | 4 | Jun 2026 | |
| THOMPSONGAS, LLC | Plumbing | Howard County | 4 | May 2026 |
| TRIPLE C ELECTRIC | Accessory Structure | 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 |
| ABBOTT BROTHERS PLUMBING | Plumbing | Howard County | 3 | Jul 2026 |
| ABBOTT'S PLUMBING, INC | Plumbing | Howard County | 3 | Jul 2026 |
| ABDULS PLUMBING SERVICE, LLC | Plumbing | Howard County | 3 | May 2026 |
| ABSOLUTE LANDSCAPE & TURF SERVICES | Deck & Patio | Howard County | 3 | Jun 2026 |
| ACR CONSTRUCTION EDUCATION | Electrical | Howard County | 3 | Jul 2026 |
| Addicks Electric LLC | Electrical | Frederick County, Howard County | 3 | May 2026 |
| ADVANCED GREEN HOME SOLUTIONS | HVAC | Howard County | 3 | Jul 2026 |
| ALLMASTER HOME SERVICES | Deck & Patio | Frederick County, Howard County | 3 | Jun 2026 |
| AMERICAN DREAM HOME REMODELING LLC | Deck & Patio | Howard County | 3 | May 2026 |
| ANMER FUENTES | Deck & Patio | Howard County | 3 | Jun 2026 |
| ANTHONY & SYLVAN CORP | Pool & Spa | Howard County | 3 | Jul 2026 |
| ANYTIME ELECTRICAL SERVICES & CO | Electrical | Howard County | 3 | Jun 2026 |
| ARK SIGN SERVICES INC | Sign | Howard County | 3 | Jun 2026 |
| ARK SIGNS SERVICES INC | Electrical | Howard County | 3 | Jul 2026 |
| ARTISAN ELECTRICAL | Electrical | Howard County | 3 | Jul 2026 |
| BELTWAY AIR CONDITIONING & HEATING | Structural | Howard County | 3 | Jul 2026 |
| Berarducci Contracting | Deck & Patio | Baltimore County, Howard County | 3 | Jun 2026 |
| BRADLEY BUILDING SERVICES LLC | Plumbing | Howard County | 3 | Jun 2026 |
| BRAVO ELECTRICAL SERVICES LLC. | Accessory Structure | Howard County | 3 | Jul 2026 |
| BW PLUMBING AND DRAIN LLC | Plumbing | Howard County | 3 | Jul 2026 |
| CAA ELECTRICAL SERVICES LLC | Electrical | Howard County | 3 | Jul 2026 |
| C & C ELECTRIC | Electrical | Howard County | 3 | Jun 2026 |
| CEDARBROOK DECK & PATIO INC | Deck & Patio | Howard County | 3 | May 2026 |
| CHARLES A KLEIN & SONS, INC. | HVAC | Howard County | 3 | Jul 2026 |
| CHESAPEAKE COMMERCIAL CONTRACTING CO | Howard County | 3 | May 2026 | |
| CHUCK SUSSAN PLUMBING AND HVAC | Plumbing | Howard County | 3 | May 2026 |
| CLASSIC DESIGN GROUP INC | Deck & Patio | Howard County | 3 | Jun 2026 |
Source: county permit records. Updated monthly.