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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C.B. Plumbing LLC Plumbing/Anne Arundel County, Frederick County, Howard County 14 permits/to Aug 2026
COMPASS POINTE PLUMBING & HEATING Plumbing/Howard County 14 permits/to Aug 2026
confers plumbing and heating Plumbing/Frederick County 14 permits/to Jul 2026
DLKimmel Contracting Inc. Plumbing/Frederick County 14 permits/to Dec 2025
DW PLUMBING SERVICES Plumbing/Howard County 14 permits/to May 2026
ENERGY-LINKS LLC Plumbing/Frederick County, Howard County 14 permits/to Jun 2026
JT CUSTOM BUILDERS LCLC Plumbing/Frederick County 14 permits/to Aug 2026
LINTHICUM PLBG & DRAIN CLEAN. Plumbing/Anne Arundel County 14 permits/to Sep 2026
Loane Brothers Plumbing/Baltimore County, Howard County 14 permits/to Oct 2025
NICKS PLUMBING Plumbing/Anne Arundel County, Howard County 14 permits/to Apr 2026
POTTER-TACKETT INC Plumbing/Anne Arundel County, Howard County 14 permits/to Sep 2026
RADKO PLBG Plumbing/Howard County 14 permits/to Jun 2026
SUPERIOR MECHANICAL SERVICES Plumbing/Anne Arundel County, Frederick County, Howard County 14 permits/to Aug 2026
WORTH & COMPANY INC Plumbing/Howard County 14 permits/to Aug 2026
ARIOSA & COMPANY, LLC. Plumbing/Anne Arundel County, Baltimore County, Frederick County, Howard County 13 permits/to Sep 2026
ATLANTIC BLUE LLC Plumbing/Howard County 13 permits/to Jun 2026
Bayshore Construction Services, LLC Plumbing/Frederick County 13 permits/to Jun 2026
BPM Heating & Cooling Plumbing/Frederick County 13 permits/to Jul 2026
B.T. Plumbing inc. Plumbing/Frederick County 13 permits/to Jul 2026
Darcon LLC Plumbing/Anne Arundel County, Frederick County, Howard County 13 permits/to Aug 2026
FLOWRITE PLUMBING & HEATING Plumbing/Anne Arundel County 13 permits/to Aug 2026
F QUALITY KITCHENS & APPLIANCES Plumbing/Frederick County 13 permits/to Mar 2026
HAMMERHEAD CONTRACTING CORPORATION Plumbing/Anne Arundel County, Howard County 13 permits/to Jul 2026
HAYES CONSTRUCTION COMPANY Plumbing/Howard County 13 permits/to May 2026
J & B PLUMBING & HEATING, INC. Plumbing/Anne Arundel County 13 permits/to Jul 2026
PARK PLUMBING, LLC Plumbing/Anne Arundel County 13 permits/to Aug 2026
PIPE DOWN PLUMBING SERVICE, LLC Plumbing/Howard County 13 permits/to Sep 2026
ProStream Plumbing Plumbing/Howard County 13 permits/to Sep 2026
RADKO MECHANICAL LLC Plumbing/Anne Arundel County 13 permits/to Sep 2026
RED DOG PLUMBING LLC Plumbing/Anne Arundel County 13 permits/to Aug 2026
ROLAND H. WOELPER, INC. Plumbing/Anne Arundel County 13 permits/to Jul 2026
Serenity Plumbing Plumbing/Frederick County, Howard County 13 permits/to Aug 2026
The Homeowners Helper llc Plumbing/Frederick County, Howard County 13 permits/to Dec 2025
T.L. BROWN GENERAL CONTRACTOR LLC Plumbing/Howard County 13 permits/to Aug 2024
WM PLUMBING LLC Plumbing/Anne Arundel County, Frederick County, Howard County 13 permits/to Mar 2026
Abdul H Muhammad Plumbing/Frederick County 12 permits/to Jul 2026
AGS PLUMBING AND HEATING INC Plumbing/Howard County 12 permits/to Sep 2025
B & D Plumbing, Inc. Plumbing/Anne Arundel County, Frederick County, Howard County 12 permits/to Aug 2026
CARL STRINE PLUMBING & HEATING Plumbing/Howard County 12 permits/to Jul 2026
CHARLES F MURPHY INC Plumbing/Frederick County 12 permits/to Sep 2026
CHRISTOPHER J WALKER Plumbing/Frederick County 12 permits/to May 2026
Edward Tull Plumbing/Frederick County 12 permits/to Jul 2026
EGER PLUMBING Plumbing/Anne Arundel County, Howard County 12 permits/to Aug 2026
EMJAY ENGINERING AND CONSTRUCTION CO., INC. Plumbing/Howard County 12 permits/to Aug 2026
ENDZEL PLUMBING LLC Plumbing/Frederick County, Howard County 12 permits/to Jul 2026
GRIFFITH ENERGY SERVICES INC. Plumbing/Frederick County, Howard County, Prince George's County 12 permits/to Sep 2026
HONEST PLUMBING Plumbing/Howard County 12 permits/to May 2025
JJ&P Services LLC Plumbing/Frederick County 12 permits/to Aug 2026
MID-ATLANTIC WATER SERVICES Plumbing/Anne Arundel County 12 permits/to Aug 2026
Nisell Plumbing & Heating Inc Plumbing/Anne Arundel County, Howard County 12 permits/to Aug 2026

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Source: county permit records. Updated weekly.