Contractor permit directory

Contractors observed in Maryland county permit records, grouped from public filings. Our observation is not complete: not every filing names a contractor, so a firm's real activity is almost always greater than what appears here.

• NEW COLOR SIGN Sign/Baltimore County, Howard County 3 permits/to Sep 2025
• NEW LINE ELECTRIC LLC Electrical/Anne Arundel County, Howard County 3 permits/to Jun 2026
• NFD INC Interior/Howard County 3 permits/to Mar 2024
• NICHOLS CONTRACTING INC Exterior/Howard County 3 permits/to Mar 2025
• NJ CONTRACTOR ELECTRICAL SERVICE LLC Electrical/Howard County 3 permits/to Dec 2025
• N J ELECTRICAL SERVICES LLC Electrical/Howard County 3 permits/to Dec 2024
• NOHO ZEPHYR I LLC DBA MICHAEL BONSBY HVAC, PLUMBING, & ELECTRICAL Electrical/Howard County 3 permits/to Apr 2026
• NONG ELECTRIC LLC. Electrical/Howard County 3 permits/to Apr 2026
• NORTHEAST ELECTRIC CO Electrical/Howard County 3 permits/to Dec 2025
• NORTH SUN CONTRACTORS Deck & Patio/Howard County 3 permits/to Aug 2026
• NUTECH HVAC AND PLUMBING HVAC/Howard County 3 permits/to May 2026
• O'HORA CONSTRUCTION GROUP HVAC/Howard County 3 permits/to Jun 2026
• OLD TIME CONTRACTORS INC Deck & Patio/Howard County 3 permits/to May 2026
• One Source LLC HVAC/Howard County 3 permits/to May 2024
• ONSITE CONSTRUCTION LLC Interior/Howard County 3 permits/to Apr 2025
• ONYX CREATIVE Deck & Patio/Howard County 3 permits/to Jan 2025
• ORTHODOX CHURCH OF ST MATTHEW Howard County 3 permits/to Aug 2026
• PATAPSCO MECHANICAL HVAC/Howard County 3 permits/to Jul 2026
• PATAPSCO PIPELINE LLC Plumbing/Howard County 3 permits/to Feb 2025
• PAUL DAVIS RESTORATION OF GREATER HVAC/Howard County 3 permits/to Sep 2025
• PAVION CORP Electrical/Anne Arundel County, Howard County 3 permits/to May 2026
• PEACH STATE ROOFING INC Deck & Patio/Howard County 3 permits/to Apr 2026
• PELTZER ELECTRIC LLC Electrical/Howard County 3 permits/to Mar 2026
• PERRY HALL HTG AND A/C HVAC/Howard County 3 permits/to Jul 2026
• Phoenix Engineering Inc. Site/Frederick County, Howard County 3 permits/to Oct 2025
• PIERSON PLUMBING HVAC/Howard County 3 permits/to Aug 2026
• PINNACLE HEATING AND AIR CONDITIONING INC HVAC/Howard County 3 permits/to Aug 2026
• PIPING & CORROSION SPECIALTIES Electrical/Anne Arundel County, Howard County 3 permits/to Jun 2026
• PK GENERAL CONSTRUCTION Deck & Patio/Howard County 3 permits/to Dec 2024
• Plumb/Gas 20020012434 Plumbing/Howard County 3 permits/to May 2026
• Plumb/Gas 20020093464 Plumbing/Howard County 3 permits/to Mar 2026
• POWER PRO LLC Electrical/Howard County 3 permits/to Jul 2026
• PRECISE ELECTRIC Electrical/Howard County 3 permits/to Jun 2026
• PREFERRED HEATING AND AIR HVAC/Howard County 3 permits/to May 2025
• PREMIER ELECTRICAL SOLUTIONS & CONTRACTING Electrical/Anne Arundel County, Howard County 3 permits/to Sep 2026
• PRO-AIR INC- HVAC/Anne Arundel County, Howard County 3 permits/to Jun 2026
• PROFESSIONAL DECK CARE Deck & Patio/Howard County 3 permits/to Oct 2024
• PRO-TECH MECHANICAL CONSTRUCTION LLC Plumbing/Howard County 3 permits/to Jul 2026
• Provost Construction & Sons, LLC Structural/Frederick County, Howard County 3 permits/to Oct 2025
• PSL PLUMBING SERVICE Plumbing/Howard County 3 permits/to May 2026
• PURE AIR HVAC HVAC/Howard County 3 permits/to Mar 2026
• QUALIFIED REMODELERS INC Accessory Structure/Howard County 3 permits/to Jan 2026
• QUALITY 1ST BASEMENT SYSTEMS INC Structural/Anne Arundel County, Howard County 3 permits/to Sep 2026
• Quick Connect Communications Inc Electrical/Anne Arundel County, Howard County 3 permits/to Aug 2026
• Quick Service Inc. HVAC/Anne Arundel County, Howard County 3 permits/to Aug 2026
• R and J Contractor Services LLC Deck & Patio/Baltimore County, Frederick County, Howard County 3 permits/to Oct 2025
• RANDLETT CONSTRUCTION LLC Deck & Patio/Howard County 3 permits/to Nov 2025
• RANGEL COMMUNICATION Electrical/Howard County 3 permits/to Jan 2026
• RAVENWOOD CONTRACTING LLC Deck & Patio/Howard County 3 permits/to Jul 2026
• RELIANCE PLUMBING HVAC/Howard County 3 permits/to Apr 2026

Source: county permit records. Updated weekly.