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

RLT PLUMBING Gas/Anne Arundel County, Frederick County, Howard County 90 permits/to Aug 2026
PEP UP INC Gas/Anne Arundel County 61 permits/to Aug 2026
ECONOMY PROPANE Gas/Anne Arundel County, Howard County 35 permits/to Sep 2026
R & S PLUMBING Gas/Anne Arundel County 32 permits/to Aug 2026
ARUNDEL GAS & WATER COND. Gas/Anne Arundel County 29 permits/to Sep 2026
HJ POIST GAS COMPANY Gas/Anne Arundel County 26 permits/to Sep 2026
ARCO MECHANICAL SERV. LLC Gas/Anne Arundel County 20 permits/to Sep 2026
GENE'S PLUMBING, INC. Gas/Anne Arundel County 16 permits/to Sep 2026
HEIDLER, INC. Gas/Anne Arundel County 16 permits/to Sep 2026
SEVERN PLUMBING & HEATING Gas/Anne Arundel County, Howard County 13 permits/to Aug 2026
AT YOUR SERVICE REPAIRS, INC. Gas/Anne Arundel County, Howard County 10 permits/to May 2026
SAQUANE JAMES JOHNSON Gas/Anne Arundel County 10 permits/to Aug 2026
UNDERWOOD ENERGY AND MECHANICAL Gas/Anne Arundel County 9 permits/to Aug 2026
C & C MECHANICAL CONTRACTORS Gas/Anne Arundel County 8 permits/to Jul 2026
SUBURBANE PROPANE Gas/Anne Arundel County 8 permits/to Apr 2026
FRAZIER'S MECHANICAL SVCS LLC Gas/Anne Arundel County 6 permits/to Jul 2026
T & R PLUMBING & HEATING INC. Gas/Anne Arundel County 6 permits/to Aug 2026
DAY OR NIGHT HOME & HEARTH Gas/Anne Arundel County 5 permits/to Aug 2026
SHELTON LUMBING AND HEATING INC Gas/Anne Arundel County 5 permits/to Jun 2026
WALTER MEDRANO T/A MEDRANO PLUMBING SERVICES Gas/Anne Arundel County 5 permits/to Aug 2026
Flo-Tron Contracting, LLC Gas/Anne Arundel County, Howard County 4 permits/to Aug 2026
MATTS PLUMBING SERVICE LLC Gas/Anne Arundel County 4 permits/to Aug 2026
PINNACLE PLUMBING AND HEATING Gas/Anne Arundel County 4 permits/to Aug 2026
TULL AND SONS, INC. Gas/Anne Arundel County 4 permits/to Jun 2026
WALLACE PLUMBING Gas/Anne Arundel County, Howard County 4 permits/to Aug 2026
MECHANICAL ENGINEER. & CONST. Gas/Anne Arundel County 3 permits/to Jul 2026
SEELEY PLUMBING COMPANY Gas/Anne Arundel County 3 permits/to Jun 2026
TAB PLUMBING AND HEATING,LLC Gas/Anne Arundel County 3 permits/to Jun 2026
T & D PLUMBING & HTG CO., INC. Gas/Anne Arundel County 3 permits/to Sep 2026
TITAN DEVELOPMENT LLC Gas/Anne Arundel County 3 permits/to Jun 2026

Source: county permit records. Updated weekly.