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 |
|---|---|---|---|---|
| ON POINT HVAC SERVICES LLC | Plumbing | Howard County | 3 | May 2026 |
| PAVEL ABAEV | Plumbing | Frederick County, Howard County | 3 | Jul 2026 |
| PERFECT PLUMBING | HVAC | Howard County | 3 | Jul 2026 |
| PERRY HALL HEATING & AIR CONDITIONING | HVAC | Howard County | 3 | Jul 2026 |
| PHOENIX CONSTRUCTION SERVICES LLC | Accessory Structure | Howard County | 3 | Jul 2026 |
| PJS ELECTRICAL | Pool & Spa | Howard County | 3 | Jul 2026 |
| POTTER-TACKETT INC | Plumbing | Howard County | 3 | May 2026 |
| PROBUILT DECK & FENCE LLC | Deck & Patio | Frederick County | 3 | Jul 2026 |
| PRO-TECH MECHANICAL CONSTRUCTION LLC | Plumbing | Howard County | 3 | Jul 2026 |
| PULSAR ELECTRIC LLC | Plumbing | Howard County | 3 | Jul 2026 |
| RADKO PLBG | Plumbing | Howard County | 3 | Jun 2026 |
| RD CONTRACTING LLC | Deck & Patio | Howard County | 3 | Jun 2026 |
| R.E. CLARKE ELECTRICAL SOLUTIONS LLC | Electrical | Howard County | 3 | Jul 2026 |
| RESIDENTIAL HOME RECOVERY CORP | Solar | Howard County | 3 | Jun 2026 |
| RHINE LAWN CARE & LANDSCAPING LLC | Deck & Patio | Howard County | 3 | Jun 2026 |
| R K OWINGS INC | Fire Protection | Howard County | 3 | Jul 2026 |
| RRF SOLUTIONS LLC | Electrical | Frederick County, Howard County | 3 | Jul 2026 |
| Salone Solutions LLC | Electrical | Frederick County | 3 | Jun 2026 |
| SB Plumbing, LLC. | Plumbing | Frederick County, Howard County | 3 | Jun 2026 |
| Scherer Contracting Inc | Deck & Patio | Frederick County | 3 | Jul 2026 |
| Services LLC Guardian fire protection | Fire Protection | Frederick County | 3 | Jun 2026 |
| SKIRATKO ELECTRIC INC | Electrical | Howard County | 3 | Jun 2026 |
| Solar Installers Near Me LLC | Solar | Frederick County | 3 | Jun 2026 |
| SONNER & ASSOCIATES | Electrical | Howard County | 3 | Jun 2026 |
| STAMBAUGH ELECTRIC LLC | Electrical | Frederick County | 3 | Jul 2026 |
| STILWELL MECHANICAL LLC | Electrical | Howard County | 3 | Jul 2026 |
| STRAT SECURITY SYSTEMS | Electrical | Howard County | 3 | Jun 2026 |
| SUNRISE ELECTRIC | Electrical | Howard County | 3 | Jul 2026 |
| SUSTAINABLE ENERGY SYSTEMS | Solar | Frederick County, Howard County | 3 | Jun 2026 |
| TAKOVA ELECTRIC, LLC | Electrical | Howard County | 3 | Jun 2026 |
| T&D PLUMBING & HEATING CO., INC | Plumbing | Howard County | 3 | Jul 2026 |
| THARCO INCORPORATED | Plumbing | Howard County | 3 | Jun 2026 |
| THE BEST SIGN INC | Sign | Howard County | 3 | Jun 2026 |
| THE DRAIN GUYS | Plumbing | Howard County | 3 | Jun 2026 |
| THOMAS & THOMAS ELECTRIC LLC | Accessory Structure | Howard County | 3 | Jul 2026 |
| Tim Stotelmyer | Plumbing | Frederick County | 3 | Jun 2026 |
| TL BROWN CONTRACTOR LLC | Plumbing | Howard County | 3 | Jun 2026 |
| TOTAL COMFORT HEATING & AIR CONDITIONING, INC. | HVAC | Howard County | 3 | Jul 2026 |
| TRI POWER ELECTRICAL CONTRACTOR LLC | Electrical | Howard County | 3 | Jun 2026 |
| UNITED AIR TEMP AC & HEATING LLC | HVAC | Howard County | 3 | Apr 2026 |
| UTILITIES UNLIMITED INC | Plumbing | Howard County | 3 | Apr 2026 |
| VALDOVINOS CONSTRUCTION, LLC | Deck & Patio | Howard County | 3 | May 2026 |
| Venture Home Solar, LLC | Solar | Frederick County, Howard County | 3 | Jun 2026 |
| Westminster Electrical Services LLC | Deck & Patio | Howard County | 3 | May 2026 |
| WILLIAMSBURG GROUP LLC | Site | Howard County | 3 | Apr 2026 |
| William Winkler | Deck & Patio | Baltimore County | 3 | Jul 2026 |
| WL STATON PLUMBING HEATING AND COOLING, LLC | Plumbing | Howard County | 3 | May 2026 |
| W & M ELECTRICAL SERVICES | Electrical | Howard County | 3 | May 2026 |
| YAQI CONSTRUCTION LLC | Plumbing | Howard County | 3 | Jun 2026 |
Source: county permit records. Updated monthly.