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

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EWASHKOW PLUMBING LLC Plumbing/Anne Arundel County 5 permits/to Sep 2026
F and C Home Improvement Plumbing/Frederick County 5 permits/to Dec 2023
Frederick County Public Schools Plumbing/Frederick County 5 permits/to Sep 2026
Freedom Mechanical Contractors Plumbing/Anne Arundel County, Howard County 5 permits/to Jun 2026
GABES PLUMBING LLC Plumbing/Anne Arundel County 5 permits/to Feb 2026
GAS & PLUMBING IMPROVEMENT SERVICES LLC Plumbing/Anne Arundel County, Howard County 5 permits/to Aug 2026
GENERAL PAVING & CONTRACTING Plumbing/Howard County 5 permits/to Jun 2026
G. E. TIGNALL & CO., INC. Plumbing/Howard County 5 permits/to Oct 2025
G H Nitzel INC Plumbing/Frederick County, Howard County 5 permits/to Mar 2026
GLENN E MURPHY Plumbing/Frederick County 5 permits/to Apr 2024
HARDY PLUMBING LLC Plumbing/Frederick County, Howard County 5 permits/to Sep 2025
Harland J Shoemaker & Son, Inc. Plumbing/Frederick County 5 permits/to Aug 2026
HAWLEY PLUMBING & HEATING LLC Plumbing/Anne Arundel County 5 permits/to Aug 2026
HAYNES PLUMBING AND HEATING INC Plumbing/Howard County 5 permits/to Jul 2026
HOEMASTER'S INC Plumbing/Howard County 5 permits/to Jun 2026
James Monroe Plumbing/Frederick County 5 permits/to Mar 2026
James R. Ballard Plumbing & Heating Inc. Plumbing/Frederick County, Howard County 5 permits/to Apr 2026
JOHN L JOHNSON Plumbing/Frederick County 5 permits/to Oct 2025
J PLUMBING LLC Plumbing/Anne Arundel County 5 permits/to Aug 2026
Jr James K Beck Plumbing/Frederick County 5 permits/to May 2025
Kenneth Crowder Plumbing/Frederick County 5 permits/to May 2026
KENNETH W PURTEE Plumbing/Frederick County 5 permits/to Jun 2026
LEE MECHANICAL Plumbing/Anne Arundel County, Howard County 5 permits/to Jun 2026
LYONS PLUMBING INCORPORATED Plumbing/Frederick County, Howard County 5 permits/to Jul 2025
MADISON MECHANICAL CONTRACTING LLC Plumbing/Howard County 5 permits/to Mar 2026
MARGARET SMITH Plumbing/Frederick County 5 permits/to Jan 2024
MARYLAND WATER CONDITIONING Plumbing/Anne Arundel County 5 permits/to Aug 2026
MERRELL BUILDING ENTERPRISES INC Plumbing/Howard County 5 permits/to Jul 2025
NICE FLOW PLUMBING HEATING AND CONTRACTING LLC Plumbing/Howard County 5 permits/to May 2024
ONE ELECTRIC & CONSTRUCTION Plumbing/Howard County 5 permits/to Jul 2026
PASADENA PREMIER PLUMBING Plumbing/Anne Arundel County 5 permits/to Aug 2026
PATRICK F SCHEPER Plumbing/Frederick County 5 permits/to Aug 2025
PAT THE PLUMBER Plumbing/Howard County 5 permits/to Feb 2026
Plumb/Gas 20020001557 Plumbing/Howard County 5 permits/to Jul 2026
Right Fit Plumbing And Home Services Plumbing/Frederick County, Howard County 5 permits/to Jan 2025
R.V. CAREY'S PLUMBING & HTG. Plumbing/Anne Arundel County 5 permits/to Jul 2026
SHAPIRO & DUNCAN, INC. Plumbing/Howard County 5 permits/to Nov 2025
SIMMONS CONTRACTING, INC. Plumbing/Anne Arundel County, Howard County 5 permits/to Aug 2026
SLO-FLO PLUMBING LLC Plumbing/Anne Arundel County, Howard County 5 permits/to Jul 2026
SOTA ELECTRICAL SERVICES LLC Plumbing/Anne Arundel County 5 permits/to Aug 2026
SOUTH EAST PLUMBING LLC Plumbing/Howard County 5 permits/to Aug 2026
Surinder Singh Plumbing/Baltimore County 5 permits/to Feb 2024
TEMP AIR COMPANY Plumbing/Frederick County, Howard County 5 permits/to Feb 2026
THE DRAIN GUYS Plumbing/Howard County 5 permits/to Jun 2026
Triangle Home Services, Inc. Plumbing/Frederick County 5 permits/to Oct 2025
TRIM PLUS Plumbing/Anne Arundel County 5 permits/to Sep 2026
U AND S KITCHEN LLC Plumbing/Howard County 5 permits/to Oct 2025
WESTWIND PLUMBING Plumbing/Anne Arundel County 5 permits/to Aug 2026
W.M. WILSON PLUMBING SERVICES, LLC Plumbing/Howard County 5 permits/to Oct 2025
5882B OLD BOHN RD Plumbing/Howard County 4 permits/to Mar 2024

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Source: county permit records. Updated weekly.