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.

• WILLIAMSBURG GROUP LLC Site/Baltimore County, Howard County 104 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
• MID ATLANTIC COOPERATIVE SOLUTIONS DBA AERO ENERGY Site/Howard County 39 permits/to Aug 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
• OLD TOWN CONSTRUCTION LLC Site/Howard County 25 permits/to Feb 2026
• GREAT VALLEY PROPANE INC. Site/Howard County 22 permits/to Jul 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
• 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
• BOSLEY CONSTRUCTION INC Site/Howard County 8 permits/to May 2026
• CARUSO HOMES ON YOUR LOT MD 1, LLC Site/Howard County 8 permits/to Aug 2026
• 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
• COSSENTINO CONTRACTING CO Site/Anne Arundel County, Howard County 6 permits/to Sep 2026
• DIXIE LAND ENERGY LLC Site/Anne Arundel County, Howard County 6 permits/to Mar 2026
• GILBANE BUILDING COMPANY Site/Howard County 6 permits/to Oct 2025
• HTI CONTRACTORS Site/Howard County 6 permits/to Aug 2025
• PLEASANTS CONSTRUCTION INC Site/Howard County 6 permits/to Apr 2026
• STEEL BUILDING SPECIALISTS, INC Site/Howard County 6 permits/to Mar 2025
• BEILESS SAWMILL LLC Site/Howard County 5 permits/to Sep 2023
• CLASSIC HOMES OF MARYLAND INC Site/Howard County 5 permits/to Jul 2026
• HOPKINS & WAYSON INC Site/Howard County 5 permits/to Mar 2024
• WHITING-TURNER CONTRACTING Site/Frederick County, Howard County 5 permits/to May 2026
• ARCO MECHANICAL SERVICRS Site/Howard County 4 permits/to Oct 2024
• COMMERCIAL CONTRACTORS, INC Site/Howard County 4 permits/to Dec 2025
• FISHER , COLLINS & CARTER , INC Site/Howard County 4 permits/to Aug 2026
• MILL CREEK RENEWABLES LLC Site/Howard County 4 permits/to Jul 2024
• NITZ DEVELOPMENT CONSTRUCTION COMPANY LLC Site/Howard County 4 permits/to Aug 2025
• STORMWATER FACILITIES, INC. Site/Anne Arundel County, Howard County 4 permits/to Aug 2026
• Thurston Companies, Inc. Site/Frederick County, Howard County 4 permits/to Apr 2026
• TIMBERLAKE HOMES, INC. Site/Anne Arundel County, Howard County 4 permits/to May 2026
• TRIANGLE CONTRACTING, LLC Site/Howard County 4 permits/to Jan 2026
• ACCUBID CIVIL CONSTRUCTION Site/Howard County 3 permits/to Jul 2025
• AMENTUM DIGITAL INFRASTRUCTURE INC Site/Howard County 3 permits/to Aug 2025
• ATLANTIC INDUSTRIAL AND MECHANICAL AND ELECTRICAL INC Site/Howard County 3 permits/to Aug 2025
• ATLANTIC POWER AND LIGHT CO Site/Howard County 3 permits/to Feb 2025
• BRANDON SMITH CONTRACTORS Site/Howard County 3 permits/to Feb 2024

Source: county permit records. Updated weekly.