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.

• PRO HOME IMPROVEMENT , LLC Plumbing/Frederick County, Howard County 76 permits/to Sep 2026
• TIM KYLE CO ELECTRICAL SERVICE INC Electrical/Howard County 76 permits/to Aug 2026
• CAPITAL CITY PLUMBING Plumbing/Anne Arundel County, Howard County 75 permits/to Sep 2026
• GSB SERVICES LLC Electrical/Howard County 74 permits/to Jan 2026
• KAYWELL CONSTRUCTION CORPORATION Electrical/Frederick County, Howard County, Prince George's County 74 permits/to Sep 2026
• MDP DECK AND PATIOS LLC Deck & Patio/Frederick County, Howard County 73 permits/to Sep 2026
• ALTERNATIVE ROOFING INC Interior/Howard County 72 permits/to Aug 2026
• ECOMIZE USA LLC HVAC/Anne Arundel County, Frederick County, Howard County 72 permits/to Aug 2026
• GRAY ELECTRIC LLC Electrical/Howard County 72 permits/to May 2026
• PRECISION ELECTRICAL SOLUTIONS Electrical/Anne Arundel County, Frederick County, Howard County 72 permits/to Aug 2026
• KASTNER PLUMBING & HEATING INC. HVAC/Howard County 71 permits/to Aug 2026
• JOHN BOUNDS PLUMBING, LLC Plumbing/Howard County 70 permits/to May 2026
• BFPE INTERNATIONAL Electrical/Anne Arundel County, Baltimore County, Howard County 69 permits/to Sep 2026
• MCALLISTER PLUMBING INC Plumbing/Anne Arundel County, Howard County 69 permits/to Sep 2026
• ONEIL PLUMBING Plumbing/Frederick County, Howard County 69 permits/to Aug 2026
• QTEC LLC Electrical/Anne Arundel County, Frederick County, Howard County, Prince George's County 69 permits/to Aug 2026
• STRATEGIC FACTORY Sign/Anne Arundel County, Frederick County, Howard County 68 permits/to Aug 2026
• WALTS MECHANICAL SERVICES INC HVAC/Howard County 68 permits/to Aug 2026
• WILLIAMS PLUMBING, LLC Plumbing/Frederick County, Howard County 68 permits/to Jul 2026
• ABBOTT'S PLUMBING, INC Plumbing/Anne Arundel County, Howard County 67 permits/to Aug 2026
• DIXIE ELECTRIC,INC Electrical/Frederick County, Howard County 67 permits/to Sep 2026
• LEONPROSERVICES LLC Deck & Patio/Howard County 67 permits/to Aug 2026
• WINDSOR ELECTRIC CO INC Electrical/Anne Arundel County, Howard County 67 permits/to Aug 2026
• ARK SIGN SERVICES INC Sign/Anne Arundel County, Howard County 66 permits/to Sep 2026
• MARYLAND MECHANICAL SYSTEMS INC. Plumbing/Anne Arundel County, Howard County 65 permits/to Aug 2026
• ST JOHN PROPERTIES INC HVAC/Anne Arundel County, Baltimore County, Frederick County, Howard County 65 permits/to Sep 2026
• TALON CONSTRUCTION INC Plumbing/Frederick County, Howard County 65 permits/to Aug 2026
• A&A CONSTRUCTION AND UTILITIES, INC. Plumbing/Howard County 64 permits/to Aug 2026
• ALPHA PLUMBING LIMITED INC Plumbing/Anne Arundel County, Howard County 64 permits/to Sep 2026
• CORNERSTONE HOMES LLC Structural/Howard County 64 permits/to Aug 2026
• KEN GRIFFIN PLUMBING Plumbing/Howard County 64 permits/to Oct 2024
• TRIANGLE SIGN & SERVICE LLC Sign/Howard County 64 permits/to Aug 2026
• CK ELECTRIC LLC HVAC/Frederick County, Howard County 63 permits/to Aug 2026
• MC Fence and Deck LLC Deck & Patio/Baltimore County, Frederick County, Howard County 63 permits/to Dec 2024
• BRICK STREET CONSTRUCTION, LLC HVAC/Frederick County, Howard County 62 permits/to Sep 2026
• M & N PLUMBING LLC Plumbing/Anne Arundel County, Howard County 62 permits/to Sep 2026
• CATONS PLUMBING, DRAINS AND HEATING Plumbing/Howard County 60 permits/to Sep 2026
• ED HVAC Services Electrical/Frederick County, Howard County 60 permits/to Aug 2026
• PROBUILT DECK & FENCE LLC Deck & Patio/Frederick County, Howard County 60 permits/to Jul 2026
• ANYTIME ELECTRICAL SERVICES & CO Electrical/Anne Arundel County, Frederick County, Howard County 59 permits/to Jul 2026
• Bailey & Shipp Electric Accessory Structure/Anne Arundel County, Frederick County, Howard County 59 permits/to May 2026
• MAXIMUM PLUMBING Plumbing/Howard County 59 permits/to Oct 2024
• MTM PLUMBING WORKS LLC Plumbing/Frederick County, Howard County 59 permits/to Jul 2026
• CLARKSVILLE HEATING & AIR, LLC HVAC/Anne Arundel County, Howard County 58 permits/to Aug 2026
• Howard County Government HVAC/Howard County 58 permits/to Sep 2026
• RAINE & SON, LLC Plumbing/Howard County 58 permits/to Oct 2025
• DAVCON ELECTRICAL SERVICES, LLC Electrical/Anne Arundel County, Frederick County, Howard County 57 permits/to Sep 2026
• JLC ELECTRICAL SERVICES Accessory Structure/Frederick County, Howard County 57 permits/to Aug 2026
• MACE ENTERPRISES LLC Fire Protection/Howard County 57 permits/to Sep 2026
• TRIPLE C ELECTRIC Accessory Structure/Frederick County, Howard County 57 permits/to Apr 2026

Source: county permit records. Updated weekly.