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.

• MBA SOLUTIONS LLC HVAC/Anne Arundel County, Howard County 13 permits/to Aug 2026
• NORTHEAST ENERGY SERVICES, LLC HVAC/Howard County 13 permits/to Aug 2026
• Parkton Woodland Services HVAC/Frederick County 13 permits/to Apr 2026
• SCARDINA PLUMBING AND HEATING INC HVAC/Anne Arundel County, Howard County 13 permits/to Aug 2026
• AIR SOURCE INC. HVAC/Anne Arundel County, Howard County 12 permits/to Aug 2026
• APPLE PLUMBING & HEATING, INC. HVAC/Howard County 12 permits/to Sep 2026
• BRANDY EDWARDS/ LEN THE PLUMBER HEATING AND AIR HVAC/Prince George's County 12 permits/to Sep 2026
• EXTERIOR MEDICS INCORPORATED HVAC/Howard County 12 permits/to Apr 2026
• KNOTT MECHANICAL INC HVAC/Anne Arundel County, Howard County 12 permits/to Aug 2026
• ONE HOUR AIR CONDITIONING & HEATING HVAC/Howard County 12 permits/to Aug 2026
• QUALITY AMBIENT, LLC HVAC/Howard County 12 permits/to Apr 2026
• SILVERADO AIR SYSTEMS, LLC HVAC/Anne Arundel County, Howard County 12 permits/to Sep 2026
• TRISTATE HOME SERVICES HVAC/Howard County 12 permits/to Apr 2026
• WHITTINGTON, JAMES DBA CONSULTING SERVICE OF HVAC/Howard County 12 permits/to Aug 2026
• BEYOND COOLING LLC HVAC/Anne Arundel County, Howard County 11 permits/to Aug 2026
• CARROLL MECHANICAL INC HVAC/Anne Arundel County, Howard County 11 permits/to Aug 2026
• COOL BREEZE HVAC,LLC HVAC/Anne Arundel County, Howard County 11 permits/to Jun 2026
• EMJAY ENGINEERING AND CONS HVAC/Howard County 11 permits/to Aug 2026
• ENVIRO-TEK SERVICES HVAC/Anne Arundel County, Howard County 11 permits/to Jun 2026
• FROSTY REFRIGERATION CO., INC HVAC/Anne Arundel County, Howard County 11 permits/to Aug 2026
• HAMILTON HEATING & AIR HVAC/Howard County 11 permits/to Aug 2026
• HENRY H LEWIS CONTRACTORS LLC HVAC/Howard County 11 permits/to Mar 2026
• INKA HVAC INC HVAC/Howard County, Prince George's County 11 permits/to Sep 2026
• JERRY'S HEATING AND AIR CONDITIONING HVAC/Howard County 11 permits/to Apr 2026
• MODERN PLUMBING SYSTEMS LLC HVAC/Howard County 11 permits/to Aug 2026
• RICHLAND SERVICES LLC HVAC/Howard County 11 permits/to Sep 2026
• VEGA'S HEATING & AIR CONDITIONING HVAC/Howard County 11 permits/to Feb 2026
• WATERVALE HEATING AND AIR CONDITIONING, INC HVAC/Howard County 11 permits/to Oct 2025
• AAA RESIDENTIAL SERVICE LTD HVAC/Howard County 10 permits/to Jul 2026
• ALL SERVICES HEATING & COOLING HVAC/Anne Arundel County, Howard County 10 permits/to Aug 2026
• BASIM MICHAEL AND SON SERVICES HVAC/Prince George's County 10 permits/to Sep 2026
• BIG JOHN HVAC, LLC HVAC/Anne Arundel County, Howard County 10 permits/to Jun 2026
• BIG JOHN'S HVAC, LLC HVAC/Howard County 10 permits/to Aug 2026
• BREEDEN HEATING AND AIR, LLC HVAC/Prince George's County 10 permits/to Sep 2026
• DANKAYS, LLC HVAC/Howard County 10 permits/to Aug 2025
• ERIC SMOCK HEATING AND AC HVAC/Howard County 10 permits/to Jun 2026
• GLOBAL ELECTRICAL HVAC/Anne Arundel County, Howard County 10 permits/to Jul 2026
• JDL HVAC & PLUMBING SERVICES HVAC/Howard County 10 permits/to Aug 2026
• MODERN AIR CONDITIONING AND HEATING, INC. HVAC/Howard County 10 permits/to Feb 2025
• ROGAN ELECTRICAL SERVICES HVAC/Howard County 10 permits/to Aug 2026
• ST PAUL METHODIST CHURCH HVAC/Howard County 10 permits/to Jan 2026
• VIPER AIR INC HVAC/Anne Arundel County, Howard County 10 permits/to Aug 2026
• Zo Plumbing HVAC/Frederick County 10 permits/to Jun 2026
• ZV HVAC LLC HVAC/Anne Arundel County, Howard County 10 permits/to Aug 2026
• ALL STAR PLUMBING LLC HVAC/Anne Arundel County, Howard County 9 permits/to Jun 2026
• ARGENT HEATING & COOLING, LLC HVAC/Howard County 9 permits/to Aug 2026
• B & B A/C & HTG SVC CO INC HVAC/Anne Arundel County 9 permits/to Aug 2026
• D&A SERVICE COMPANY HVAC/Howard County 9 permits/to Aug 2026
• EVERT REYES HVAC/Anne Arundel County 9 permits/to Aug 2026
• MITCHELL PLUMBING & HEATING INC. HVAC/Howard County 9 permits/to Jun 2026

Source: county permit records. Updated weekly.