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.

• HARRIS SMARIGA AND ASSOCIATES Site/Frederick County 318 permits/to Sep 2026
• Rodgers Consulting Inc - Yellow Team Site/Frederick County 173 permits/to Sep 2026
• TERRA SOLUTIONS ENGINEERING TERRA SOLUTIONS ENGINEERING Site/Frederick County 161 permits/to Aug 2026
• AERO ENERGY Site/Baltimore County, Frederick County 142 permits/to Aug 2026
• WILLIAMSBURG GROUP LLC Site/Baltimore County, Howard County 104 permits/to Aug 2026
• B & R Design Group Site/Frederick County 56 permits/to Jul 2026
• BILLY SWORD Site/Frederick County 54 permits/to Aug 2026
• MODERN COMFORT SYSTEMS Site/Anne Arundel County, Howard County 54 permits/to Aug 2026
• THOMPSONGAS, LLC Site/Howard County 49 permits/to Aug 2026
• ADTEK Engineers, Inc. Site/Frederick County 48 permits/to Aug 2026
• MID ATLANTIC COOPERATIVE SOLUTIONS DBA AERO ENERGY Site/Howard County 39 permits/to Aug 2026
• Daft-McCune-Walker, Inc. Site/Frederick County 38 permits/to Mar 2026
• Triad Engineering In HG Civil Dept Site/Frederick County 28 permits/to Jul 2026
• BUCH CONSTRUCTION INC Site/Baltimore County, Howard County 26 permits/to May 2026
• KEYSTONE CUSTOM HOMES, INC. Site/Howard County 26 permits/to Jun 2026
• Dewberry Engineers Inc. Site/Frederick County 25 permits/to Apr 2026
• OLD TOWN CONSTRUCTION LLC Site/Howard County 25 permits/to Feb 2026
• KCI Technologies Site/Frederick County 23 permits/to May 2026
• Senior Engineer Andrew Mueller Site/Frederick County 23 permits/to Oct 2025
• GREAT VALLEY PROPANE INC. Site/Howard County 22 permits/to Jul 2026
• JOSEPH H CECI Site/Frederick County 21 permits/to Jul 2026
• Piedmont Design Group, LLC Site/Frederick County 21 permits/to Aug 2026
• MR JOHN MAZELON Site/Frederick County 17 permits/to Feb 2026
• MORGAN KELLER INC Site/Frederick County, Howard County 15 permits/to May 2026
• HIGHLAND TURF INC Site/Howard County 14 permits/to Jan 2026
• W F WILSON & SONS INC Site/Baltimore County, Howard County 13 permits/to Aug 2026
• RLO CONTRACTORS Site/Howard County 12 permits/to Aug 2026
• PEAK GENERALCONTRACTING LLC Site/Anne Arundel County, Howard County 10 permits/to Jun 2026
• WAVERLY BUILDERS AND DEVELOPERS LLC Site/Howard County 10 permits/to Jun 2026
• Baltimore Gas & Electric Site/Anne Arundel County, Baltimore County, Howard County 9 permits/to Feb 2026
• BGE Site/Howard County 9 permits/to Aug 2026
• CARUSO HOMES ON YOUR LOT III, LLC Site/Howard County 9 permits/to Nov 2024
• CLSI Site/Frederick County 9 permits/to Jun 2026
• E & R SERVICES Site/Howard County 9 permits/to Jun 2026
• H & K GROUP INC Site/Howard County 9 permits/to Aug 2026
• VALLEY ROAD ENTERPRISES LLC Site/Howard County 9 permits/to Aug 2026
• Bert Newcomer Site/Frederick County 8 permits/to Oct 2024
• BOSLEY CONSTRUCTION INC Site/Howard County 8 permits/to May 2026
• Brittany Ayers Site/Frederick County 8 permits/to Dec 2025
• CARUSO HOMES ON YOUR LOT MD 1, LLC Site/Howard County 8 permits/to Aug 2026
• Clark | Azar and Associates Site/Frederick County 8 permits/to Nov 2025
• GLEN ARM BUILDING COMPANY Site/Anne Arundel County, Howard County 8 permits/to Jun 2026
• JFC INC Site/Howard County 8 permits/to Mar 2026
• AMERIGAS PROPANE, L.P. Site/Howard County 7 permits/to Sep 2025
• CJ MILLER, LLC Site/Frederick County, Howard County 7 permits/to Feb 2026
• MR MICHAEL BATTERN Site/Frederick County 7 permits/to May 2026
• Chris Collins Site/Baltimore County, Frederick County 6 permits/to Apr 2025
• COSSENTINO CONTRACTING CO Site/Anne Arundel County, Howard County 6 permits/to Sep 2026
• Daphne Matthews Site/Frederick County 6 permits/to Jun 2026
• DIXIE LAND ENERGY LLC Site/Anne Arundel County, Howard County 6 permits/to Mar 2026

Source: county permit records. Updated weekly.