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

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
ENGICO SOLUTIONS INC Electrical/Anne Arundel County, Frederick County, Howard County, Prince George's County 12 permits/to Aug 2026
EXTERIOR MEDICS INCORPORATED HVAC/Howard County 12 permits/to Apr 2026
GABLE SIGNS & GRAPHICS Sign/Anne Arundel County, Frederick County, Howard County 12 permits/to Sep 2026
GREEN CONSTRUCTION MULTISERVICES LLC Solar/Howard County 12 permits/to Aug 2026
GRIFFITH ENERGY SERVICES INC. Plumbing/Frederick County, Howard County, Prince George's County 12 permits/to Sep 2026
HELECTRICS Accessory Structure/Howard County 12 permits/to Sep 2026
HOMELIFE REMODELING INC Deck & Patio/Baltimore County, Howard County 12 permits/to Aug 2026
HONEST PLUMBING Plumbing/Howard County 12 permits/to May 2025
JACK STONE SIGN CO INC Sign/Howard County 12 permits/to Jul 2026
Jacobs Contracting, LLC. Electrical/Anne Arundel County, Frederick County, Howard County 12 permits/to Aug 2026
JCB Electric, LLC Solar/Howard County 12 permits/to Dec 2025
JOHNS HOPKINS UNIVERSITY APPLIED PHYSICS LABORATORY Electrical/Howard County 12 permits/to Jun 2026
K & C ENTERPRISES ELECTRICAL CONTRACTORS LLC Electrical/Howard County 12 permits/to Apr 2026
K & H ELECTRIC INC Electrical/Anne Arundel County, Howard County 12 permits/to Aug 2026
KNOTT MECHANICAL INC HVAC/Anne Arundel County, Howard County 12 permits/to Aug 2026
LARRY HENDRICKSON ELECTRIC LLC Accessory Structure/Howard County 12 permits/to Feb 2026
MD REALESTATE SALES & LEASING REMOD Deck & Patio/Howard County 12 permits/to Jun 2025
MICHAEL RITTER LONGFENCE.COM Deck & Patio/Howard County 12 permits/to Oct 2024
MONA ELECTRIC GROUP INC Electrical/Frederick County, Howard County 12 permits/to Aug 2026
Nisell Plumbing & Heating Inc Plumbing/Anne Arundel County, Howard County 12 permits/to Aug 2026
ONE HOUR AIR CONDITIONING & HEATING HVAC/Howard County 12 permits/to Aug 2026
OYL HOMES, LLC Deck & Patio/Howard County 12 permits/to Apr 2026
PARTNER CONTRACTING LLC Fire Protection/Howard County 12 permits/to Feb 2026
PEARSON ELECTRIC Electrical/Anne Arundel County, Howard County 12 permits/to Jun 2026
PERFECT PLUMBING Plumbing/Anne Arundel County, Frederick County, Howard County 12 permits/to Sep 2026
PRIME FIRE PROTECTION LLC Fire Protection/Anne Arundel County, Frederick County, Howard County 12 permits/to Aug 2026
PSI PLUMBING INC. Plumbing/Howard County 12 permits/to Dec 2025
QUALITY AMBIENT, LLC HVAC/Howard County 12 permits/to Apr 2026
RLO CONTRACTORS Site/Howard County 12 permits/to Aug 2026
Rosendin Electric Electrical/Frederick County, Howard County 12 permits/to Mar 2026
ROWAN'S LANDSCAPE COMPANY INC Pool & Spa/Howard County 12 permits/to May 2026
SAFFER PLUMBING, INC Plumbing/Frederick County, Howard County 12 permits/to Jul 2026
SAMSUNG SIGN INC Sign/Anne Arundel County, Howard County 12 permits/to Sep 2026
SHAWN'S ELECTRIC LLC Electrical/Anne Arundel County, Howard County 12 permits/to Sep 2026
SILVERADO AIR SYSTEMS, LLC HVAC/Anne Arundel County, Howard County 12 permits/to Sep 2026
SOLAR ENERGY SYSTEMS Solar/Howard County 12 permits/to Oct 2025
SPECTRUM ELECTRIC INC Electrical/Frederick County, Howard County 12 permits/to Sep 2026
STEPHEN J TANT PLUMBING LLC Plumbing/Anne Arundel County, Howard County 12 permits/to Jun 2026
Summit Fire & Security Fire Protection/Anne Arundel County, Frederick County, Howard County 12 permits/to Aug 2026
SUN SIGN AND PRINT LLC Sign/Frederick County, Howard County 12 permits/to Apr 2026
SUPERIOR SIGNS LLC Sign/Howard County 12 permits/to Jun 2026
Tele-Plus Corporation Electrical/Frederick County, Howard County 12 permits/to Jun 2026
THE FINAL CUT HOME IMPROVEMENT LLC Deck & Patio/Howard County 12 permits/to Aug 2026
THE PLUMBER, LLC Plumbing/Anne Arundel County, Frederick County, Howard County 12 permits/to Aug 2026
THOMASVILLE RESTORATION LLC Interior/Anne Arundel County, Frederick County, Howard County 12 permits/to Aug 2026
TRADE COLLABORATORS Electrical/Howard County 12 permits/to Jun 2026
TRISTATE HOME SERVICES HVAC/Howard County 12 permits/to Apr 2026
TRW PLUMBING SERVICE LLC Plumbing/Anne Arundel County, Howard County 12 permits/to Sep 2026

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Source: county permit records. Updated weekly.