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.

All counties Anne Arundel County Baltimore County Frederick County Howard County Prince George's County

All trades Accessory Structure Deck & Patio Electrical Exterior Fire Protection Gas Interior HVAC Plumbing Pool & Spa Sign Site Solar Structural

David Nau Electrical/Frederick County 42 permits/to Aug 2026
JP ELECTRIC LLC Electrical/Anne Arundel County, Frederick County, Howard County 42 permits/to Aug 2026
Kline Electrical Services Electrical/Frederick County 42 permits/to Sep 2026
Englar Electric LLC Electrical/Frederick County, Howard County 41 permits/to Aug 2026
OLYMPUS ELECTRIC LLC Electrical/Frederick County, Howard County 41 permits/to Jul 2026
PLUGG ELECTRIC LLC Electrical/Howard County 41 permits/to Aug 2026
Rachael Pietrzyk Electrical/Frederick County 41 permits/to Sep 2026
C T Smith Electrical Services LLC Electrical/Anne Arundel County, Frederick County, Howard County 40 permits/to Sep 2026
INTEGRATED TECHOLOGIES GROUP Electrical/Howard County 40 permits/to Apr 2026
JK Electric Inc Electrical/Frederick County 40 permits/to Aug 2026
OWINGS MECHANICAL Electrical/Anne Arundel County, Howard County 40 permits/to Jul 2026
R. L. THOMPSON ELECTRIC CONTRACTORS INC Electrical/Howard County 40 permits/to Jul 2026
CONNOLLY SIGN COMPANY Electrical/Anne Arundel County, Howard County 39 permits/to Sep 2026
DEL ELECTRIC Electrical/Howard County 39 permits/to Aug 2026
KENNETH A EYLER Electrical/Frederick County 39 permits/to Jul 2026
LEMUEL BOWDEN JR Electrical/Frederick County 39 permits/to Aug 2026
SKIRATKO ELECTRIC INC Electrical/Anne Arundel County, Frederick County, Howard County 39 permits/to Aug 2026
WADI ELECTRIC Electrical/Anne Arundel County, Howard County 39 permits/to Sep 2026
JORDAN M KNOX Electrical/Frederick County 38 permits/to Jun 2026
STILWELL MECHANICAL LLC Electrical/Anne Arundel County, Howard County, Prince George's County 38 permits/to Sep 2026
A & J ELECTRIC CO INC Electrical/Anne Arundel County, Howard County 37 permits/to Sep 2026
ANGEL ELECTRICAL SERVICES LLC Electrical/Anne Arundel County, Frederick County, Howard County 37 permits/to Sep 2026
Ash Electric LLC Electrical/Frederick County, Howard County 37 permits/to Aug 2026
AUGUST SERVICES LLC Electrical/Anne Arundel County, Howard County 37 permits/to Jun 2026
Jaffe Electric Inc Electrical/Frederick County, Howard County 37 permits/to Feb 2026
Best Integrated Systems Electrical/Anne Arundel County, Frederick County, Howard County 36 permits/to Sep 2026
CAMPBELL & SON ELECTRIC Electrical/Howard County 36 permits/to Aug 2026
JOHNSON CONTROLS SECURITY SOL Electrical/Anne Arundel County, Frederick County 36 permits/to Aug 2026
KEITH A BLIZZARD Electrical/Frederick County 36 permits/to Aug 2026
MARION C DEAN Electrical/Frederick County 36 permits/to Sep 2026
STAMBAUGH ELECTRIC LLC Electrical/Frederick County 36 permits/to Jul 2026
ADT LLC DBA VINTAGE SECURITY Electrical/Howard County 35 permits/to Mar 2024
DESHAIES ELECTRICAL SVCS LLC Electrical/Anne Arundel County 35 permits/to Sep 2026
RONALD E HUFFER Electrical/Frederick County 35 permits/to Sep 2026
RRF SOLUTIONS LLC Electrical/Anne Arundel County, Frederick County, Howard County 35 permits/to Aug 2026
UNISOURCE SERVICES LLC Electrical/Frederick County, Howard County 35 permits/to Dec 2025
A AFFORDABLE ELECTRIC SERVICE LLC Electrical/Howard County 34 permits/to Aug 2026
ARCO ELECTRIC INC Electrical/Frederick County, Howard County 34 permits/to Aug 2026
C & D General Construction, Inc. Electrical/Frederick County, Howard County 34 permits/to Aug 2026
CREST LOCK COMPANY INC Electrical/Anne Arundel County, Howard County 34 permits/to Sep 2026
RIDGLEY ELECTRIC Electrical/Frederick County, Howard County 34 permits/to Aug 2026
Shipp Electric Electrical/Anne Arundel County, Howard County, Prince George's County 34 permits/to Sep 2026
AAFFORDABLE ELECTRIC SERVICE LLC Electrical/Anne Arundel County 33 permits/to Sep 2026
CAPITAL A ELECTRIC Electrical/Anne Arundel County, Howard County 33 permits/to Jul 2026
CHESAPEAKE SYSTEMS SERVICE INC Electrical/Howard County 33 permits/to Aug 2026
Dustin Elswick Electrical/Frederick County 33 permits/to Aug 2026
LEONARD E BATHGATE Electrical/Frederick County 33 permits/to Apr 2025
Westminster Electrical Services LLC Electrical/Anne Arundel County, Frederick County, Howard County 33 permits/to Aug 2026
CAA ELECTRICAL SERVICES LLC Electrical/Anne Arundel County, Frederick County, Howard County 32 permits/to Aug 2026
Hull's Electric Service, Inc. Electrical/Frederick County 32 permits/to Jul 2026

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Source: county permit records. Updated weekly.