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

ALLAN HOMES UNLIMITED INC Deck & Patio/Howard County 31 permits/to Mar 2026
APPLE SIGNS INC Sign/Anne Arundel County, Howard County 31 permits/to Aug 2026
ARDO CONTRACTING INC Deck & Patio/Howard County 31 permits/to Jul 2026
BAY AREA MECHANICAL SERVICES, INC HVAC/Howard County 31 permits/to Jul 2026
F.H.FURR PLUMBING, HEATING AND AIR CONDITIONING, I HVAC/Howard County 31 permits/to Aug 2024
FREESTATE BALTIMORE LLC Electrical/Frederick County, Howard County 31 permits/to May 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
HUNG CHUNG ELECTRIC COMPANY Electrical/Howard County 31 permits/to Oct 2025
ITS ELECTRICAL LLC Electrical/Frederick County, Howard County 31 permits/to Aug 2026
JBI SERVICES LLC Electrical/Anne Arundel County, Frederick County, Howard County 31 permits/to Apr 2026
J&R PLUMBING AND HEATING Pool & Spa/Howard County 31 permits/to Sep 2024
PLUMBING DESIGNS, INC HVAC/Howard County 31 permits/to Jul 2025
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
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
410EnergySolutions Solar/Howard County 30 permits/to Dec 2025
CLARIFIED ELECTRIC INC Electrical/Anne Arundel County, Howard County 30 permits/to Aug 2026
Creative Deck Designs Deck & Patio/Baltimore County, Howard County 30 permits/to Jun 2026
HATFIELD'S EQUIPMENT & DEDICATION SVCS INC Plumbing/Howard County 30 permits/to Aug 2026
JOHNSTON ELECTRIC Pool & Spa/Anne Arundel County, Frederick County, Howard County 30 permits/to Sep 2026
JR Contractor Services llc Deck & Patio/Frederick County, Howard County 30 permits/to Jun 2026
KEYT DAVIS DBA FOCUSED PLUMBING & GAS, LLC Plumbing/Howard County 30 permits/to Jun 2026
OLYMPIC PLUMBING, INC. Plumbing/Anne Arundel County, Frederick County, Howard County 30 permits/to Aug 2026
REDSTEEL HVAC HVAC/Howard County 30 permits/to Sep 2026
STOUTER CONSTRUCTION Electrical/Frederick County, Howard County 30 permits/to Mar 2026
WACHTER INC Electrical/Anne Arundel County, Frederick County, Howard County 30 permits/to Sep 2026
AUER ELECTRIC INC Electrical/Anne Arundel County, Howard County 29 permits/to Jul 2026
BAD MONKEY ELECTRIC Electrical/Howard County 29 permits/to Sep 2025
BLACKSTONE KITCHEN AND BATH LLC Plumbing/Frederick County, Howard County 29 permits/to Aug 2026
DYNAMO ELECTRIC LLC Electrical/Anne Arundel County, Howard County 29 permits/to Jul 2026
FORT ELECTRIC Solar/Howard County 29 permits/to Jun 2026
MLM HOME IMPROVEMENT LLC Interior/Anne Arundel County, Howard County 29 permits/to Jul 2026
NATIVE SONS INC Electrical/Howard County 29 permits/to Jul 2026
NORTH AMERICAN DECK & PATIO EXPERTS Deck & Patio/Howard County 29 permits/to Aug 2026
OSPREY ELECTRIC LLC HVAC/Anne Arundel County, Howard County 29 permits/to Sep 2026
PULSAR ELECTRIC LLC Electrical/Howard County 29 permits/to Aug 2026
AIR INNOVATION LLC HVAC/Anne Arundel County, Howard County 28 permits/to Sep 2026
ALL CLEAR PLUMBING & DRAIN LLC Plumbing/Howard County 28 permits/to Oct 2024
EXTERIOR REMODELING INC Deck & Patio/Howard County 28 permits/to Mar 2025
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
JDL ELECTRIC Electrical/Anne Arundel County, Howard County 28 permits/to Aug 2026
JLB MECHANICAL, LLC HVAC/Howard County 28 permits/to Jun 2026
Kline's Plumbing, LLC Plumbing/Frederick County, Howard County 28 permits/to Aug 2026
MICHAEL RUNK PLUMBING & HEATING Plumbing/Howard County 28 permits/to Aug 2026
MRT PLUMBING & CONSTRUCTION INC Plumbing/Anne Arundel County, Frederick County, Howard County 28 permits/to Sep 2026
POWER SOURCE ELECTRIC INC Electrical/Anne Arundel County, Howard County 28 permits/to Aug 2026
R.A. OHLER PLUMBING AND HEATING INC Plumbing/Howard County 28 permits/to Jul 2026

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Source: county permit records. Updated weekly.