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.

• MARYLAND ELECTRICAL SOLUTIONS HVAC/Howard County 152 permits/to Sep 2026
• PUTMAN PLUMBING INC Plumbing/Frederick County 151 permits/to Aug 2026
• S&L SPECIALTY CONTRACTING INC Interior/Anne Arundel County 150 permits/to Apr 2026
• BELAIR ENGINEERING & SVC CO. HVAC/Anne Arundel County 149 permits/to Sep 2026
• STATON HEATING, COOLING, AND PLUMBING HVAC/Anne Arundel County 148 permits/to Sep 2026
• HAVEPOWER LLC Accessory Structure/Anne Arundel County, Frederick County, Howard County, Prince George's County 146 permits/to Aug 2026
• LONG ELECTRIC LLC Electrical/Anne Arundel County, Frederick County, Howard County 146 permits/to Sep 2026
• BEAZER HOMES Deck & Patio/Baltimore County, Howard County 145 permits/to Jun 2026
• PARAMOUNT ELECTRIC CO., INC. Pool & Spa/Anne Arundel County, Frederick County, Howard County 145 permits/to Aug 2026
• ANTHONYS ELECTRIC HVAC/Howard County 144 permits/to Sep 2026
• AMERICAN DESIGN AND BUILD LTD Solar/Anne Arundel County, Frederick County, Howard County, Prince George's County 143 permits/to Sep 2026
• BRIAN KISH Deck & Patio/Baltimore County 143 permits/to Oct 2022
• BROTHERS SERVICES COMPANY Plumbing/Anne Arundel County, Howard County 143 permits/to Aug 2026
• AERO ENERGY Site/Baltimore County, Frederick County 142 permits/to Aug 2026
• N.E. BOB WALTZ PLUMB/HTG-JEFF Plumbing/Frederick County 142 permits/to Sep 2026
• POWER FACTOR LLC Solar/Anne Arundel County, Frederick County, Howard County 141 permits/to Aug 2026
• Dennis M Feola Fire Protection/Baltimore County 139 permits/to Mar 2023
• C & C ELECTRIC HVAC/Anne Arundel County, Howard County 136 permits/to Sep 2026
• ABLE ELECTRICAL SERVICES INC Accessory Structure/Anne Arundel County, Howard County 134 permits/to Sep 2026
• ADVANCED WIRING SOLUTIONS LLC Electrical/Anne Arundel County, Frederick County, Prince George's County 133 permits/to Sep 2026
• RON AIR INC HVAC/Howard County 133 permits/to Aug 2026
• BRYAN MOBERLY PLUMBING SERVICES Plumbing/Howard County 131 permits/to Sep 2026
• KIM SIMPSON Electrical/Frederick County 128 permits/to Sep 2026
• GOT ELECTRIC LLC Electrical/Frederick County, Howard County 127 permits/to Aug 2026
• GUS D BISER Electrical/Frederick County 127 permits/to Aug 2026
• GUARDIAN PROTECTION SERVICES Electrical/Anne Arundel County, Frederick County, Howard County 126 permits/to Aug 2026
• PREMIERE ELECTRICAL SERVICES LLC Electrical/Howard County 126 permits/to Aug 2026
• TITAN MECHANICAL, INC. HVAC/Anne Arundel County 124 permits/to Feb 2026
• UNIFIED ELECTRICAL SOLUTIONS, INC Accessory Structure/Anne Arundel County, Prince George's County 124 permits/to Sep 2026
• ALLEN B COBLENTZ Electrical/Frederick County 123 permits/to Aug 2026
• DAVID L KLIPP Plumbing/Frederick County 123 permits/to Aug 2026
• SUMMIT ELECTRIC COMPANY Electrical/Anne Arundel County, Frederick County, Howard County, Prince George's County 123 permits/to Sep 2026
• CORNERSTONE REMODELING LLC Plumbing/Howard County 121 permits/to Sep 2026
• KCL ELECTRIC Electrical/Frederick County, Howard County 121 permits/to Aug 2026
• TNT PLUMBING & DRAIN SERVICE, LLC Plumbing/Frederick County, Howard County 121 permits/to Sep 2026
• CORNETT HEATING AND COOLING , LLC HVAC/Anne Arundel County 120 permits/to Sep 2026
• THARCO INCORPORATED Plumbing/Anne Arundel County, Howard County 119 permits/to Aug 2026
• THOMAS & THOMAS ELECTRIC LLC Accessory Structure/Anne Arundel County, Frederick County, Howard County 119 permits/to Aug 2026
• STANLEY MARTIN COMPANIES Anne Arundel County 118 permits/to Feb 2026
• BOPAT ELECTRIC CO INC Electrical/Anne Arundel County, Frederick County, Howard County 117 permits/to Aug 2026
• THE DECK & FENCE COMPANY LLC Deck & Patio/Anne Arundel County, Baltimore County, Frederick County, Howard County 117 permits/to Aug 2026
• ARS DBA BLUE DOT OF MD HVAC/Anne Arundel County 116 permits/to Sep 2026
• ANDREWS ARK ELECTRIC LLC Accessory Structure/Anne Arundel County, Howard County 115 permits/to Sep 2026
• CLINTON ELECTRIC CO INC Accessory Structure/Anne Arundel County, Frederick County, Howard County 113 permits/to Sep 2026
• MICKS PLUMBING & HEATING Plumbing/Frederick County 113 permits/to Sep 2026
• NVR, INC / RYAN Plumbing/Anne Arundel County 113 permits/to Aug 2026
• ROTO ROOTER SERVICES COMPANY Plumbing/Anne Arundel County, Howard County 113 permits/to Sep 2026
• PJ Fitzpatrick LLC Plumbing/Anne Arundel County, Frederick County, Howard County 112 permits/to Aug 2026
• RENEWABLE ENERGY CORPORATION Solar/Anne Arundel County, Frederick County, Howard County 112 permits/to Sep 2026
• EVERON LLC Electrical/Frederick County, Howard County, Prince George's County 111 permits/to Sep 2026

Source: county permit records. Updated weekly.