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

ANGEL ELECTRICAL SERVICES LLC Electrical/Anne Arundel County, Frederick County, Howard County 37 permits/to Sep 2026
AUGUST SERVICES LLC Electrical/Anne Arundel County, Howard County 37 permits/to Jun 2026
GAF ENERGY LLC Solar/Anne Arundel County, Baltimore County, Howard County 37 permits/to Aug 2026
GARTLAND PLUMBING INC Plumbing/Anne Arundel County, Howard County 37 permits/to Aug 2026
Best Integrated Systems Electrical/Anne Arundel County, Frederick County, Howard County 36 permits/to Sep 2026
CONTINENTAL ELECTRIC HVAC/Anne Arundel County, Howard County 36 permits/to Aug 2026
JOHNSON CONTROLS SECURITY SOL Electrical/Anne Arundel County, Frederick County 36 permits/to Aug 2026
WALL TO WALL CONSTRUCTION LLC Deck & Patio/Anne Arundel County, Frederick County, Howard County 36 permits/to Aug 2026
DESHAIES ELECTRICAL SVCS LLC Electrical/Anne Arundel County 35 permits/to Sep 2026
ECONOMY PROPANE Gas/Anne Arundel County, Howard County 35 permits/to Sep 2026
MELROY PLUMBING & HEATING, INC. Plumbing/Anne Arundel County, Howard County 35 permits/to Jun 2026
RRF SOLUTIONS LLC Electrical/Anne Arundel County, Frederick County, Howard County 35 permits/to Aug 2026
CAPERS ELECTRICAL SERVICES LLC Solar/Anne Arundel County, Frederick County, Howard County, Prince George's County 34 permits/to Aug 2026
CREST LOCK COMPANY INC Electrical/Anne Arundel County, Howard County 34 permits/to Sep 2026
DIGITAL PROTECTION SERVICES INC Fire Protection/Anne Arundel County, Howard County 34 permits/to Jul 2026
Focused Plumbing & Gas, LLC Plumbing/Anne Arundel County, Frederick County, Howard County 34 permits/to Sep 2026
OWINGS HOME SERVICES Plumbing/Anne Arundel County, Frederick County, Howard County 34 permits/to Jun 2026
Shipp Electric Electrical/Anne Arundel County, Howard County, Prince George's County 34 permits/to Sep 2026
WALT'S MECHANICAL SERVICES LLC HVAC/Anne Arundel County 34 permits/to Sep 2026
AAFFORDABLE ELECTRIC SERVICE LLC Electrical/Anne Arundel County 33 permits/to Sep 2026
A.J. MICHAELS COMPANY, INC HVAC/Anne Arundel County, Howard County 33 permits/to Aug 2026
CAPITAL A ELECTRIC Electrical/Anne Arundel County, Howard County 33 permits/to Jul 2026
TRI-STATE ELECTRICAL SVCS,INC. HVAC/Anne Arundel County 33 permits/to Sep 2026
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
GAC SERVICES HVAC/Anne Arundel County, Howard County, Prince George's County 32 permits/to Aug 2026
Reliance Fire Protection, Inc. Fire Protection/Anne Arundel County, Baltimore County, Frederick County 32 permits/to Sep 2026
R & S PLUMBING Gas/Anne Arundel County 32 permits/to Aug 2026
APPLE SIGNS INC Sign/Anne Arundel County, Howard County 31 permits/to Aug 2026
GREAT DAY IMPROVEMENTS LLC Deck & Patio/Anne Arundel County, Frederick County, Howard County 31 permits/to Aug 2026
GROUND LOOP HEATING & AIR CONDITIONING, INC HVAC/Anne Arundel County, Howard County 31 permits/to Aug 2026
JBI SERVICES LLC Electrical/Anne Arundel County, Frederick County, Howard County 31 permits/to Apr 2026
Salone Solutions LLC Accessory Structure/Anne Arundel County, Frederick County, Howard County 31 permits/to Sep 2026
S AND D PLUMBING LLC Plumbing/Anne Arundel County, Frederick County, Howard County 31 permits/to Aug 2026
Stella Electric LLC Electrical/Anne Arundel County, Frederick County 31 permits/to Aug 2026
Tuff Shed, Inc. Accessory Structure/Anne Arundel County, Frederick County, Howard County 31 permits/to Sep 2026
ZILLA ELECTRIC LLC Electrical/Anne Arundel County, Howard County 31 permits/to Aug 2026
CLARIFIED ELECTRIC INC Electrical/Anne Arundel County, Howard County 30 permits/to Aug 2026
JOHNSTON ELECTRIC Pool & Spa/Anne Arundel County, Frederick County, Howard County 30 permits/to Sep 2026
KEN VODUSEK DBA KV ELECTRIC Electrical/Anne Arundel County 30 permits/to Sep 2026
OLYMPIC PLUMBING, INC. Plumbing/Anne Arundel County, Frederick County, Howard County 30 permits/to Aug 2026
WACHTER INC Electrical/Anne Arundel County, Frederick County, Howard County 30 permits/to Sep 2026
ARUNDEL GAS & WATER COND. Gas/Anne Arundel County 29 permits/to Sep 2026
AUER ELECTRIC INC Electrical/Anne Arundel County, Howard County 29 permits/to Jul 2026
DYNAMO ELECTRIC LLC Electrical/Anne Arundel County, Howard County 29 permits/to Jul 2026
MLM HOME IMPROVEMENT LLC Interior/Anne Arundel County, Howard County 29 permits/to Jul 2026
OSPREY ELECTRIC LLC HVAC/Anne Arundel County, Howard County 29 permits/to Sep 2026
AIR INNOVATION LLC HVAC/Anne Arundel County, Howard County 28 permits/to Sep 2026
GOOD NEWS ELECTRIC INC Electrical/Anne Arundel County, Howard County 28 permits/to Aug 2026
Holtzman Propane, LC Plumbing/Anne Arundel County, Frederick County, Howard County 28 permits/to Sep 2026

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Source: county permit records. Updated weekly.