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

EAST WEST SIGN GROUP Sign/Baltimore County, Howard County 14 permits/to Jan 2026
ENERGY-LINKS LLC Plumbing/Frederick County, Howard County 14 permits/to Jun 2026
FERN RODKEY ELECTRIC INC Electrical/Frederick County, Howard County 14 permits/to Jun 2026
HALL'S ELECTRIC LLC Electrical/Howard County 14 permits/to Aug 2026
Hart Home Solutions LLC Interior/Frederick County, Howard County 14 permits/to May 2026
HIGHLAND TURF INC Site/Howard County 14 permits/to Jan 2026
Holsinger Construction, LLC Accessory Structure/Frederick County, Howard County 14 permits/to Aug 2026
INFINITI TECHNOLOGIES Electrical/Anne Arundel County, Howard County 14 permits/to Sep 2026
JAMES G DAVIS CONSTRUCTION CORP Fire Protection/Howard County 14 permits/to Sep 2026
JAMES M KLASMEIER ELECTRIC LLC Electrical/Howard County 14 permits/to Jul 2026
JDL HVAC SERVICES LLC HVAC/Anne Arundel County, Howard County 14 permits/to Jul 2026
Jireh Electric Inc Deck & Patio/Anne Arundel County, Frederick County, Howard County 14 permits/to Aug 2026
J+J PRO-BUILDCONSTRUCTION INC Deck & Patio/Howard County 14 permits/to Apr 2025
LANSTAR SYSTEMS INC Electrical/Frederick County, Howard County 14 permits/to Jun 2026
Loane Brothers Plumbing/Baltimore County, Howard County 14 permits/to Oct 2025
Long Creek Construction Deck & Patio/Anne Arundel County, Baltimore County, Frederick County, Howard County 14 permits/to Aug 2026
MARYLAND SILA HEATING AND AIR HVAC/Howard County 14 permits/to Oct 2024
MAYNE MECHANICAL LLC HVAC/Anne Arundel County, Howard County 14 permits/to Jun 2026
M&C ELECTRICAL INC. Electrical/Howard County 14 permits/to Jul 2026
MIDPOINT TECHNOLOGY GROUP LLC Electrical/Anne Arundel County, Frederick County, Howard County 14 permits/to Jul 2026
NICKS PLUMBING Plumbing/Anne Arundel County, Howard County 14 permits/to Apr 2026
OASIS LANDSCAPE GROUP LLC Pool & Spa/Anne Arundel County, Frederick County, Howard County 14 permits/to Jul 2026
ONE HOUR A/C & HEATING HVAC/Anne Arundel County, Howard County 14 permits/to Aug 2026
PARADISE POOLS INC Pool & Spa/Baltimore County, Howard County 14 permits/to May 2026
POTTER-TACKETT INC Plumbing/Anne Arundel County, Howard County 14 permits/to Sep 2026
PROCO ENTERPRISES INC Howard County 14 permits/to Oct 2023
RADKO PLBG Plumbing/Howard County 14 permits/to Jun 2026
REVERE MEDIA SERVICES COMPANY Deck & Patio/Frederick County, Howard County 14 permits/to Jun 2026
R. P. ELECTRIC Electrical/Howard County 14 permits/to Feb 2026
SANSBURY ELECTRIC Electrical/Anne Arundel County, Frederick County, Howard County 14 permits/to Jun 2026
SMART ROOF ENERGY DBA 4I ENERGY PARTNERS Solar/Anne Arundel County, Frederick County, Howard County 14 permits/to Sep 2026
SOL SIGNS & GRAPHICS Sign/Howard County 14 permits/to Mar 2026
SUPERIOR MECHANICAL SERVICES Plumbing/Anne Arundel County, Frederick County, Howard County 14 permits/to Aug 2026
TECO HVAC & HOME IMPROVEMENTS LLC HVAC/Howard County 14 permits/to Aug 2026
THE J F JOHNSON LUMBER COMPANY LLC Deck & Patio/Anne Arundel County, Howard County 14 permits/to Sep 2026
THOMAS N. O'CONNOR PLUMBING AND HEATING, LLC HVAC/Howard County 14 permits/to Mar 2026
TRUE POWER SOLUTIONS LLC Electrical/Anne Arundel County, Howard County 14 permits/to Jun 2026
VISION TECHNOLOGIES LLC Electrical/Anne Arundel County, Howard County 14 permits/to Jun 2026
Whitetail Electric, Inc. Electrical/Frederick County, Howard County 14 permits/to Mar 2026
WORTH & COMPANY INC Plumbing/Howard County 14 permits/to Aug 2026
A|A Signs Electrical/Baltimore County, Howard County 13 permits/to Apr 2024
ACR CONSTRUCTION EDUCATION Electrical/Howard County 13 permits/to Jul 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
AUTLEX ELECTRIC INC Electrical/Howard County 13 permits/to Jun 2026
BALTIMORE SIGNS AND GRAPHICS Sign/Anne Arundel County, Frederick County, Howard County 13 permits/to May 2026
CALVERT PLUMBING & HEATING Electrical/Anne Arundel County, Howard County 13 permits/to Sep 2026
CARUSO BUILDER LACEY LLC Deck & Patio/Howard County 13 permits/to May 2026
Darcon LLC Plumbing/Anne Arundel County, Frederick County, Howard County 13 permits/to Aug 2026
DATALINK INTERACTIVE INC Electrical/Anne Arundel County, Howard County 13 permits/to Aug 2026

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Source: county permit records. Updated weekly.