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

J L JOHNSON AND SONS INC. Plumbing/Howard County 7 permits/to Jul 2026
JOIST CONSTRUCTION LLC Deck & Patio/Frederick County, Howard County 7 permits/to Dec 2025
JT ELECTRIC CO. Electrical/Anne Arundel County, Howard County 7 permits/to Aug 2026
J VINTON SCHAFER CONSTRUCTION LLC Structural/Howard County 7 permits/to Nov 2025
JV PLUMBING, LLC Plumbing/Anne Arundel County, Howard County 7 permits/to Sep 2026
K&E ELECTRIC Electrical/Howard County, Prince George's County 7 permits/to Sep 2026
KJ ENERGY SOLUTION INC Electrical/Howard County 7 permits/to Aug 2026
KPH Design LLC Electrical/Frederick County, Howard County 7 permits/to Mar 2026
KROEGER ELECTRIC COMPANY Electrical/Anne Arundel County, Howard County 7 permits/to Aug 2026
L.A.W MECHANICAL LLC HVAC/Howard County 7 permits/to Aug 2026
LEISURE CONTRACTING LLC Pool & Spa/Anne Arundel County, Howard County 7 permits/to Aug 2026
LIGHT THE WAY ELECTRICAL SERVICES LLC Deck & Patio/Howard County 7 permits/to Aug 2026
MAMMOTH CONSTRUCTION LLC Deck & Patio/Frederick County, Howard County 7 permits/to May 2026
MARYLAND HEATING & COOLING HVAC/Howard County 7 permits/to Aug 2026
MAXCELL PLUMBING LLC Fire Protection/Anne Arundel County, Howard County 7 permits/to May 2026
MEYER ELECTRICAL SERVICES INC Solar/Howard County 7 permits/to Feb 2026
MILLENNIUM ELECTRIC Pool & Spa/Anne Arundel County, Howard County 7 permits/to May 2026
MM ELECTRIC Electrical/Howard County 7 permits/to May 2026
National Water Service Plumbing/Howard County 7 permits/to Sep 2024
OUTDOOR ARCHITECTS INC Deck & Patio/Howard County 7 permits/to Nov 2025
PINNACLE PLUMBING LLC Plumbing/Anne Arundel County, Howard County 7 permits/to Apr 2026
PLATINUM BUILDERS LLC Deck & Patio/Howard County 7 permits/to Sep 2026
PLUMBTASTIC PLUMBING LLC HVAC/Howard County 7 permits/to Sep 2026
PO BOX 441126 Electrical/Howard County 7 permits/to Jul 2026
POTOMAC MECHANICAL CONTRACTORS Plumbing/Frederick County, Howard County 7 permits/to May 2026
POWER TECHNOLOGIES SERVICES INC Electrical/Frederick County, Howard County 7 permits/to Sep 2025
Power Up Electric LLC Electrical/Frederick County, Howard County 7 permits/to May 2026
RAYMAR PLUMBING SERVICES INC Plumbing/Howard County 7 permits/to Jun 2026
RC ENERGY SOLUTIONS LLC Electrical/Anne Arundel County, Frederick County, Howard County 7 permits/to Aug 2026
RCJ ELECTRIC Electrical/Howard County 7 permits/to Sep 2026
REDSTAG PLUMBING LLC Plumbing/Howard County 7 permits/to Dec 2025
REMODELING WIZARDS OF MARYLAND Deck & Patio/Anne Arundel County, Howard County 7 permits/to Jun 2026
RENOVATE YOUR HOME LLC Deck & Patio/Anne Arundel County, Howard County 7 permits/to Aug 2026
RJ ELECTRIC WORKS Electrical/Anne Arundel County, Howard County 7 permits/to Aug 2026
ROI CONSTRUCTION LLC Solar/Howard County 7 permits/to Jan 2026
RSL ELECTRIC LLC Electrical/Howard County 7 permits/to Jul 2025
SCHERR CONTRACTING LLC Interior/Anne Arundel County, Howard County 7 permits/to May 2026
SG COMPLETE HOME CARE REMODELING LLC Interior/Frederick County, Howard County 7 permits/to Aug 2026
SMARTROOF LLC. Solar/Frederick County, Howard County 7 permits/to Jan 2025
Southern Maryland Heating & Air, Inc HVAC/Howard County, Prince George's County 7 permits/to Sep 2026
SUNRISE ELECTRIC Electrical/Howard County 7 permits/to Jul 2026
SUPERIOR POWER & LIGHTING Electrical/Anne Arundel County, Howard County 7 permits/to May 2026
TRINITY CHIMNEY SERVICE INC Fire Protection/Howard County 7 permits/to Jul 2026
TRUE ELECTRIC LLC Electrical/Anne Arundel County, Frederick County, Howard County 7 permits/to Apr 2026
TRUE NORTH REMODELING LLC Plumbing/Anne Arundel County, Howard County 7 permits/to Aug 2026
VELOCITY ENERGY Solar/Frederick County, Howard County 7 permits/to Jul 2026
V’s Home Improvement Plumbing/Frederick County, Howard County 7 permits/to Mar 2026
W.H. WINEGAR & SON PLUMBING AND HEATING Plumbing/Howard County 7 permits/to Aug 2024
WILSONSCAPES LLC Deck & Patio/Anne Arundel County, Howard County 7 permits/to Jun 2026
ABOVE AND BEYOND PLUMBING & HEATING Plumbing/Howard County 6 permits/to Apr 2026

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Source: county permit records. Updated weekly.