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.

• W.H. WINEGAR AND SON PLUMBING AND HEATING Plumbing/Howard County 4 permits/to Aug 2026
• WILL-AIR, LLC HVAC/Howard County 4 permits/to Nov 2024
• WILLISON ELECTRIC Electrical/Howard County 4 permits/to Feb 2025
• W L C INCORPORATED Deck & Patio/Howard County 4 permits/to Dec 2025
• YES ELECTRIC LLC Electrical/Howard County 4 permits/to Sep 2025
• ZEEMAX PLUMBING INC Plumbing/Anne Arundel County, Howard County 4 permits/to Feb 2026
• 0D & A SERVICE COMPANY HVAC/Howard County 3 permits/to Aug 2026
• 7M GRAPHIX Sign/Baltimore County, Howard County 3 permits/to May 2026
• A1 DECK SOULTIONS LLC Deck & Patio/Howard County 3 permits/to Apr 2026
• AABEL SIGNS Sign/Howard County 3 permits/to Feb 2025
• A-ADVANCED LLC. DBA JOHN G. WEBSTER HVAC/Anne Arundel County, Howard County 3 permits/to Aug 2026
• AA ELECTRIC LLC Electrical/Anne Arundel County, Howard County 3 permits/to Jun 2026
• ABSOLUTE INTEGRITY ELECTRICAL CONTRACTORS LLC Electrical/Howard County 3 permits/to Jan 2024
• ACCUBID CIVIL CONSTRUCTION Site/Howard County 3 permits/to Jul 2025
• A&C PLUMBING AND HEATING, LLC Plumbing/Howard County 3 permits/to Mar 2026
• A/C POWER INC Electrical/Howard County 3 permits/to Jun 2026
• ADAMS CONTRACTOR LLC Deck & Patio/Howard County 3 permits/to Jan 2025
• AD & C MANAGEMENT COMPANY T/A SERENITY BUILDERS Accessory Structure/Howard County 3 permits/to Oct 2025
• A&D CONTRACTING SERVICES LLC Deck & Patio/Howard County 3 permits/to Aug 2025
• AGM PRINTING Sign/Howard County 3 permits/to Jun 2026
• AIR LLC / JUSTIN MILLER T/A Plumbing/Howard County 3 permits/to Feb 2026
• AIR-MAX MECHANICAL, INC HVAC/Howard County 3 permits/to Jun 2026
• ALL ABOUT AIR, LLC HVAC/Anne Arundel County, Howard County 3 permits/to May 2026
• ALL ABOUT ELECTRIC & HVAC LLC Accessory Structure/Frederick County, Howard County 3 permits/to Nov 2024
• ALL SEASONS HOME EXTERIOR LLC Plumbing/Howard County 3 permits/to Jun 2025
• ALL SERVICE INC Plumbing/Howard County 3 permits/to Dec 2025
• ALL STAR PLUMBING & HEATING INC. Plumbing/Howard County 3 permits/to Apr 2026
• ALL THINGS NEW LLC Interior/Howard County 3 permits/to Apr 2026
• ALTER CONSTRUCTION CORP Sign/Howard County 3 permits/to Jul 2024
• AMAZING HEATING AND A/C INC. Plumbing/Howard County 3 permits/to Nov 2025
• AMBROSE AND SONS Fire Protection/Howard County 3 permits/to Dec 2023
• AM ELECTRIC ENTERPRISES LLC Electrical/Howard County 3 permits/to Jan 2025
• AMENTUM DIGITAL INFRASTRUCTURE INC Site/Howard County 3 permits/to Aug 2025
• ANTHONY ELECTRICAL SERVICES INC Electrical/Howard County 3 permits/to Dec 2025
• ANTONIO CHRISTIANO CONSTRUCTION LLC HVAC/Howard County 3 permits/to Apr 2024
• Architect 21040008625 HVAC/Howard County 3 permits/to Sep 2026
• Architect 21040015709 Deck & Patio/Howard County 3 permits/to Aug 2025
• ARCHITECTS WHO BUILD, LLC Deck & Patio/Howard County 3 permits/to May 2026
• ARG SERVICES LLC Solar/Howard County 3 permits/to Oct 2023
• ASSURED SERVICES INC Plumbing/Howard County 3 permits/to Jun 2026
• ATLANTIC INDUSTRIAL AND MECHANICAL AND ELECTRICAL INC Site/Howard County 3 permits/to Aug 2025
• ATLANTIC POWER AND LIGHT CO Site/Howard County 3 permits/to Feb 2025
• ATLANTIDA BUILDERS INC Fire Protection/Howard County 3 permits/to Apr 2025
• AUSTIN TAYLOR LLC Electrical/Howard County 3 permits/to Jul 2024
• Avat Electric, LLC Electrical/Frederick County, Howard County 3 permits/to Aug 2026
• AYATES PLUMBING & MECHANICAL, LLC HVAC/Howard County 3 permits/to Nov 2024
• BAYFRONT HEATING & A/ C HVAC/Howard County 3 permits/to Aug 2026
• Bayside Outdoor Living Deck & Patio/Baltimore County, Howard County 3 permits/to Aug 2025
• BECRAFT PLUS Electrical/Anne Arundel County, Howard County 3 permits/to Aug 2026
• BELFOR USA GROUP INC Interior/Howard County 3 permits/to Oct 2024

Source: county permit records. Updated weekly.