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

BRIDGEWORKS CONSTRUCTION HVAC/Howard County 6 permits/to Apr 2025
CODY SANCHEZ HVAC/Frederick County 6 permits/to Mar 2024
Daley Construction HVAC/Howard County 6 permits/to Sep 2026
DOMCO MECHANICAL INC HVAC/Anne Arundel County, Howard County 6 permits/to Aug 2026
DOUBLE R AC AND HEATING HVAC/Howard County 6 permits/to Mar 2026
FARNEN AND DERMER, INC HVAC/Howard County 6 permits/to Jul 2025
FREDERICK ELECTRIC COMPANY HVAC/Howard County 6 permits/to Jul 2026
GAITHERSBURG A/C & HEATING, INC. (DBA GAC SERVICES HVAC/Howard County 6 permits/to Sep 2025
H&M GENERAL CONSTRUCTION HVAC/Howard County, Prince George's County 6 permits/to Sep 2026
INSTANT HEATING & A/C, INC. HVAC/Anne Arundel County 6 permits/to Aug 2026
J&P MECHANICAL SOLUTIONS LLC HVAC/Anne Arundel County, Howard County 6 permits/to Jul 2026
LAD'S HVAC LLC HVAC/Howard County 6 permits/to Mar 2026
MICHAEL BONSBY HEATING AND AIR CONDITIONING, LLC HVAC/Howard County 6 permits/to Jul 2024
NORRIS PLUMBING SERVICES HVAC/Anne Arundel County 6 permits/to Aug 2026
PALMAR CONSTRUCTION LLC HVAC/Frederick County, Howard County 6 permits/to Oct 2025
REAL CHILL HTG & A/C INC. HVAC/Anne Arundel County 6 permits/to Aug 2026
R.E. ROBERTSON PLUMBING & HTG HVAC/Anne Arundel County 6 permits/to Sep 2026
SC PLUMBING SERVICES LLC HVAC/Howard County 6 permits/to Aug 2026
SEVERN ELECTRIC INC HVAC/Anne Arundel County, Howard County 6 permits/to Aug 2026
TRACY GLENN GROVES HVAC/Howard County 6 permits/to Sep 2024
WOLFE CONTRACTING HVAC/Howard County 6 permits/to Jun 2026
AMAZING HEATING & AIR CONDITIONING, INC. HVAC/Howard County 5 permits/to Jul 2026
ANNANDALE HEATING & COOLING, LLC HVAC/Howard County, Prince George's County 5 permits/to Sep 2026
ARC ELECTRICAL SERVICES HVAC/Anne Arundel County, Howard County 5 permits/to Jul 2026
ARC HEATING & COOLING, LLC HVAC/Howard County 5 permits/to Sep 2024
BEN BAUMAN & SONS LLC HVAC/Howard County 5 permits/to Jul 2026
BOOTHE'S HEATING AND AIR HVAC/Anne Arundel County 5 permits/to Jun 2026
BUCKMASTER ENTERPRISE HVAC/Anne Arundel County 5 permits/to Aug 2026
CERTIFIED COMFORT HVAC HVAC/Anne Arundel County, Howard County 5 permits/to Aug 2026
CHESAPEAKE CONTRACTING GROUP HVAC/Howard County 5 permits/to Aug 2026
CMH INC DBA CROPPMETCALFE SVCS HVAC/Anne Arundel County 5 permits/to Aug 2026
COMPLETE HOME SOLUTIONS HVAC/Anne Arundel County, Howard County 5 permits/to Aug 2026
CONTEMPORARYVELECTRIC CO INC HVAC/Howard County 5 permits/to Jun 2026
CREW HEATING & AIR CONDITIONING LLC HVAC/Howard County 5 permits/to Sep 2026
DBA/ PRO ACTIVE HVAC LLC HVAC/Howard County 5 permits/to Jun 2026
DNM CONSTRUCTION HVAC/Howard County 5 permits/to Aug 2026
ERIC B EXPRESS HEATING & AIR CONDITIONING LLC HVAC/Anne Arundel County 5 permits/to Aug 2026
FLEX MECHANICAL LLC HVAC/Anne Arundel County, Howard County 5 permits/to Aug 2026
HUNTER MECHANICAL HVAC/Anne Arundel County, Frederick County 5 permits/to Jul 2026
HVACR 05010094193 HVAC/Howard County 5 permits/to Apr 2026
LAB Electric & Controls LLC HVAC/Frederick County 5 permits/to Mar 2026
MARK W PRESGRAVE HVAC/Frederick County 5 permits/to Mar 2025
MAXAIR HEATING AND AIR CONDITIONING HVAC/Anne Arundel County 5 permits/to May 2026
MECHANICAL ENGINEERING AND CONSTRUCTION CORP. HVAC/Howard County 5 permits/to Apr 2026
Michael Bonsby HVAC, Plumbing & Electrical HVAC/Anne Arundel County, Frederick County 5 permits/to Aug 2026
MURRAY'S PLUMBING AND HEATING HVAC/Howard County 5 permits/to Oct 2025
MURRAYS PLUMBING AND HEATING HVAC/Howard County 5 permits/to Jul 2024
MYERS MECHANICAL HVAC/Anne Arundel County, Howard County 5 permits/to Aug 2026
NORTHEAST ENERGY SERVICE LLC HVAC/Howard County 5 permits/to Oct 2024
NTC MAZZUCA CONTRACTING INC HVAC/Howard County 5 permits/to Mar 2026

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Source: county permit records. Updated weekly.