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

MARK BREW PLUMBING Plumbing/Howard County 4 permits/to Nov 2023
MARKING CONSTRUCTION, INC Plumbing/Howard County 4 permits/to Apr 2026
MILLBROOK HOME REMODELING INC Plumbing/Frederick County 4 permits/to Jan 2026
MMR PLUMBING Plumbing/Anne Arundel County, Frederick County, Howard County 4 permits/to May 2026
NATIONAL ELECTRIC SERVICE Plumbing/Anne Arundel County 4 permits/to Jul 2026
No limits home services llc Plumbing/Howard County 4 permits/to Jan 2025
Office Manager F&A Excavating LLC Plumbing/Frederick County 4 permits/to Mar 2025
PATTERSON PLUMBING Plumbing/Howard County 4 permits/to Feb 2026
PHOENIX MECHANICAL LLC Plumbing/Howard County 4 permits/to Jun 2026
PLEASANT LIVING PLUMBING LLC Plumbing/Anne Arundel County 4 permits/to May 2026
Poole and Sons Excavating, Inc Plumbing/Frederick County 4 permits/to Jun 2026
PRIME PLUMBING & UTILITIES Plumbing/Anne Arundel County 4 permits/to May 2026
R.H.Lapp Plumbing/Frederick County 4 permits/to Oct 2025
RL BUILDERS LLC Plumbing/Frederick County 4 permits/to Jan 2026
RZ PLUMBING AND CONTRACTORS LLC Plumbing/Howard County 4 permits/to Oct 2025
SAIA PLUMBING & HEATING Plumbing/Frederick County, Howard County 4 permits/to Jul 2024
SERAFIN & SONS PLUMBING Plumbing/Howard County 4 permits/to May 2026
SG HOMES LLC Plumbing/Howard County 4 permits/to Oct 2025
SHARY'S PLUMBING Plumbing/Frederick County 4 permits/to May 2026
Shawley's LP Gas Plumbing/Frederick County 4 permits/to Jun 2025
SHIPLEY PLUMBING HEATING & AIR Plumbing/Howard County 4 permits/to Jul 2024
SHIPLEY PLUMBING HEATING INC. Plumbing/Howard County 4 permits/to Jul 2026
STANLEY BROWN DBA/ GO TO GUYS PLUMBING Plumbing/Howard County 4 permits/to Jun 2026
SUBURBAN PROPANE LP. Plumbing/Howard County 4 permits/to Jun 2026
Sweeney Brothers Plumbing Plumbing/Frederick County 4 permits/to Sep 2025
TEJADA & SONS PLBG & GAS SVCS Plumbing/Anne Arundel County 4 permits/to Jul 2026
TG ELECTRIC LLC Plumbing/Howard County 4 permits/to Feb 2025
THE PLUMBING DEPT/CHAD BRUNNER Plumbing/Frederick County 4 permits/to Oct 2023
THOMAS N O'CONNOR PLUMBING & HEATING, LLC Plumbing/Howard County 4 permits/to Jul 2024
TIGERS HOME IMPROVEMENT LLC Plumbing/Howard County 4 permits/to Jun 2026
TWINS PLUMBING COMPANY Plumbing/Anne Arundel County 4 permits/to Jul 2026
W&A Plumbing and Heating Services LLC Plumbing/Frederick County, Howard County 4 permits/to Jul 2026
WHITE HALL PLUMBING & HYDRONICS Plumbing/Howard County 4 permits/to Jul 2026
W.H. WINEGAR AND SON PLUMBING AND HEATING Plumbing/Howard County 4 permits/to Aug 2026
ZEEMAX PLUMBING INC Plumbing/Anne Arundel County, Howard County 4 permits/to Feb 2026
24/7 Grease Trap & Services Inc Plumbing/Frederick County 3 permits/to Jul 2026
A&C PLUMBING AND HEATING, LLC Plumbing/Howard County 3 permits/to Mar 2026
A.E. BERG PLUMBING, INC. Plumbing/Anne Arundel County 3 permits/to Aug 2026
AFIMIX PLUMBING & MECHANICAL Plumbing/Anne Arundel County 3 permits/to Jul 2026
Agustin Roman Ayllon Plumbing/Frederick County 3 permits/to May 2026
AIR LLC / JUSTIN MILLER T/A Plumbing/Howard County 3 permits/to Feb 2026
ALL SEASONS HOME EXTERIOR LLC Plumbing/Howard County 3 permits/to Jun 2025
ALL SERVICE INC Plumbing/Howard County 3 permits/to Dec 2025
ALL STAR PLUMBING & HEATING INC. Plumbing/Howard County 3 permits/to Apr 2026
AMAZING HEATING AND A/C INC. Plumbing/Howard County 3 permits/to Nov 2025
ANDREW DAY ELECTRIC, INC. Plumbing/Frederick County 3 permits/to May 2026
ASSURED SERVICES INC Plumbing/Howard County 3 permits/to Jun 2026
BEST DEAL HOME IMPROVEMENT LLC Plumbing/Howard County 3 permits/to Dec 2025
Bilal Hassan Plumbing/Frederick County 3 permits/to Jan 2026
Bill Gilde Electric Plumbing/Howard County 3 permits/to Jul 2025

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Source: county permit records. Updated weekly.