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

WORTH AND COMPANY HVAC/Howard County 5 permits/to Aug 2026
WR GENERAL CONSTRUCTION LLC Deck & Patio/Howard County 5 permits/to Aug 2024
ZTM SERVICES Electrical/Anne Arundel County, Howard County 5 permits/to Jun 2026
4A Contracting Accessory Structure/Frederick County, Howard County 4 permits/to Apr 2025
5882B OLD BOHN RD Plumbing/Howard County 4 permits/to Mar 2024
A3 MECHANICAL INC. HVAC/Howard County 4 permits/to Sep 2024
A.A. ELECTRIC CO INC Electrical/Howard County 4 permits/to Jan 2024
A BETTER HOME LLC Deck & Patio/Frederick County, Howard County 4 permits/to Feb 2026
ABLE ARCHITECTS, LLC Deck & Patio/Howard County 4 permits/to May 2026
ABS BUILDING SERVICES LLC Interior/Howard County 4 permits/to Jul 2026
ACKER & SONS INC. Plumbing/Anne Arundel County, Howard County 4 permits/to May 2026
AC QUALITY CONSTRUCTION LLC Deck & Patio/Anne Arundel County, Howard County 4 permits/to Jun 2026
ADAMS CONSTRUCTION LLC Accessory Structure/Howard County 4 permits/to May 2026
ADAMS ELECTRICAL SERVICES LLC Plumbing/Anne Arundel County, Howard County 4 permits/to Jun 2026
ADCOCKS SYSTEMS LLC Electrical/Howard County 4 permits/to Nov 2025
ADVANCED SOLAR TECHNOLOGIES LLC Electrical/Howard County 4 permits/to Apr 2026
AES ELECTRIC INC DBA FREESTATE ELECTRICAL Electrical/Howard County 4 permits/to Mar 2026
AFFORDABLE SIGNS AND NEON Sign/Frederick County, Howard County 4 permits/to Mar 2026
A & G ELECTRIC LLC Electrical/Frederick County, Howard County 4 permits/to Feb 2025
AIRSOURCE LLC HVAC/Howard County 4 permits/to May 2026
AIR ZONE SYSTEMS INC HVAC/Howard County, Prince George's County 4 permits/to Aug 2026
ALL AMERICAN PLUMBING, INC. Plumbing/Anne Arundel County, Howard County 4 permits/to Apr 2026
ALLAN GENERAL CONSTRUCTION LLC Deck & Patio/Howard County 4 permits/to Jan 2026
ALL HOMES HVAC HVAC/Howard County 4 permits/to Jun 2024
ALPINE SIGN & LIGHTING Electrical/Howard County 4 permits/to Feb 2025
AM BELL PLUMBING Plumbing/Howard County 4 permits/to Mar 2026
AMC ELECTRIC LLC Deck & Patio/Anne Arundel County, Howard County 4 permits/to Jun 2026
American Contracting Services Deck & Patio/Baltimore County, Howard County 4 permits/to Oct 2024
AMERICA'S BEST SERVICE INC Electrical/Howard County 4 permits/to May 2026
ANJ CONSTRUCTION INC. Electrical/Frederick County, Howard County 4 permits/to Feb 2026
ANSTINE PLUMBING COMPANY HVAC/Howard County 4 permits/to Aug 2026
APEX CONTRACTING LLC Deck & Patio/Howard County 4 permits/to May 2026
ARA CONSTRUCTION CORP Anne Arundel County, Howard County 4 permits/to Apr 2026
ARCO DB COMPANIES INC Howard County 4 permits/to Mar 2026
ARCO MECHANICAL SERVICRS Site/Howard County 4 permits/to Oct 2024
ARCTIC PLUMBING&AIR HVAC/Howard County 4 permits/to Jun 2024
A & R MECHANICAL, INC HVAC/Howard County 4 permits/to Apr 2026
ASSEMBLEE, LLC Solar/Howard County 4 permits/to Feb 2026
ATLANTIC CONTRACTING GROUP INC HVAC/Howard County 4 permits/to Nov 2025
ATLANTIC HOME GENERATOR Plumbing/Howard County 4 permits/to Mar 2026
babbu homes llc Deck & Patio/Howard County 4 permits/to Nov 2023
BASEMENT SYSTEMS USA INC Interior/Howard County 4 permits/to Sep 2024
Belmont Solar Solar/Baltimore County, Frederick County, Howard County 4 permits/to Oct 2024
BEST DEAL PLUMBING Plumbing/Howard County 4 permits/to Dec 2025
BEST ELECTRIC COMPANY Electrical/Anne Arundel County, Howard County 4 permits/to Jun 2026
BETHESDA BROTHERS GENERAL CONTRACTING LLC Howard County 4 permits/to Oct 2025
BGIS INTEGRATED TECHNICAL SERVICES US LLC HVAC/Frederick County, Howard County 4 permits/to May 2026
BIG BOY ELECTRIC, INC. Electrical/Anne Arundel County, Howard County 4 permits/to Aug 2026
BILMIN COMPANY, INC HVAC/Howard County 4 permits/to Feb 2026
BLACK INK ELECTRIC Electrical/Howard County 4 permits/to Jul 2026

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Source: county permit records. Updated weekly.