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

SAROSA ELECTRIC LLC Plumbing/Frederick County, Howard County 3 permits/to Jul 2026
SEELEY PLUMBING - MASTER Plumbing/Frederick County 3 permits/to Mar 2025
SHANNON COOLEY Plumbing/Baltimore County 3 permits/to Jun 2022
SHARP ENERGY Plumbing/Howard County 3 permits/to May 2025
STEADY FLOW LLC Plumbing/Anne Arundel County 3 permits/to Aug 2026
STUART CONTRACTORS LLC Plumbing/Howard County 3 permits/to Aug 2025
SUNDANCE CONSTRUCTION Plumbing/Frederick County, Howard County 3 permits/to Oct 2024
SUPER ELECTRIC LLC Plumbing/Howard County 3 permits/to Apr 2026
T/B/D Plumbing/Howard County 3 permits/to Jul 2025
T.C.N. CONTRACTING SERVICES, INC. Plumbing/Howard County 3 permits/to Jun 2024
THOMAS E CLARK INC Plumbing/Howard County 3 permits/to Jun 2026
Thompsons Plumbing and Heating Contractor Plumbing/Frederick County 3 permits/to Jun 2026
THUMEL PLUMBING Plumbing/Anne Arundel County 3 permits/to Jul 2026
TIDEWATER PLUMBING, INC. Plumbing/Anne Arundel County, Howard County 3 permits/to Aug 2026
TNT PLUMBING & DRAIN SVC LLC Plumbing/Anne Arundel County 3 permits/to Jul 2026
TOM ALLAN PLUMBING AND HEATING Plumbing/Howard County 3 permits/to Jul 2024
TRENDS DESIGN GROUP LLC Plumbing/Howard County 3 permits/to Jul 2026
tzk mechanical Plumbing/Frederick County 3 permits/to Dec 2024
Van's Plumbing Llc Plumbing/Frederick County, Howard County 3 permits/to Mar 2024
VERTICAL MECHANICAL GROUP Plumbing/Frederick County, Howard County 3 permits/to Sep 2025
WILL PLUMBING, LLC Plumbing/Howard County 3 permits/to May 2025
W&M ELECTRICAL SERVICE LLC Plumbing/Anne Arundel County 3 permits/to Jun 2026
WOO JOO MECHANICAL Plumbing/Frederick County, Howard County 3 permits/to Dec 2024
W R FLATER GENERAL CONTRACTOR Plumbing/Anne Arundel County 3 permits/to Sep 2026
ZEN CONSTRUCTION CORP Plumbing/Anne Arundel County, Frederick County 3 permits/to Jul 2026

Source: county permit records. Updated weekly.