Is My Contractor Licensed in Maryland?
Quick answer
Maryland licenses home-service trades statewide through boards in the Maryland Department of Labor, including the State Board of Plumbing, the State Board of Electricians, the HVACR Board and the Maryland Home Improvement Commission (MHIC). Pest control businesses are licensed by the Maryland Department of Agriculture. Plumbers: Maryland State Board of Plumbing, Maryland Department of Labor. Electricians: Maryland State Board of Electricians, Maryland Department of Labor. HVAC (heating and air): Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors (HVACR), Maryland Department of Labor. Roofers: Maryland Home Improvement Commission (MHIC), Maryland Department of Labor.
Checked September 30, 2026. Every rule below links to the official source; licensing rules change, so confirm with the board before you hire.
Plumbers in Maryland
Licensed by: Maryland State Board of Plumbing, Maryland Department of Labor
The State Board of Plumbing licenses people who provide plumbing and gas services in Maryland, except in Baltimore County and the WSSC service area in Prince George's and Montgomery Counties, which issue their own plumbing licenses. Check a state license on the board's public query, and if you live in one of those areas, check with the local licensing office.
Look up a license · Source: Maryland State Board of Plumbing · 30 plumbing companies in Maryland on 1-800Deals
Electricians in Maryland
Licensed by: Maryland State Board of Electricians, Maryland Department of Labor
All electrical work in Maryland must be performed by a licensed master, journeyperson or apprentice electrician, and apprentices must be supervised at all times by a licensed master or journeyperson. Verify the electrician on the board's public license query.
Look up a license · Source: Maryland State Board of Electricians · 5 electricians companies in Maryland on 1-800Deals
HVAC (heating and air) in Maryland
Licensed by: Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors (HVACR), Maryland Department of Labor
The HVACR Board licenses and regulates individuals who provide residential and commercial heating, ventilation, air conditioning and refrigeration services, and it investigates complaints about unlicensed practice. Check the contractor on the HVACR public license query.
Look up a license · Source: Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors · 16 hvac companies in Maryland on 1-800Deals
Roofers in Maryland
Licensed by: Maryland Home Improvement Commission (MHIC), Maryland Department of Labor
The Maryland Home Improvement Commission licenses home improvement contractors and salespersons, and home improvement includes the repair or replacement of any part of a building used as a residence. Check the roofer's MHIC license before signing a contract, since the MHIC Guaranty Fund covers work only by licensed contractors.
Look up a license · Source: Maryland Home Improvement Commission · 1 roofing company in Maryland on 1-800Deals
Pest control in Maryland
Licensed by: Maryland Department of Agriculture, Pesticide Regulation Section
Any business that offers pest control services or applies pesticides for hire in Maryland, including structural pest control, needs a pesticide business license from the Maryland Department of Agriculture and must have at least one certified pest control applicator. You can look up businesses and applicators in the department's online search.
Look up a license · Source: Maryland Department of Agriculture, Pesticide Applicator Certification and Business Licensing Requirements · 26 pest control companies in Maryland on 1-800Deals
Garage door companies in Maryland
Licensed by: Maryland Home Improvement Commission (MHIC), Maryland Department of Labor
MHIC licenses home improvement contractors, and home improvement covers the alteration, repair or replacement of a building or part of a building used as a residence. Ask the garage door company for its MHIC license number and check it on the MHIC public query.
Look up a license · Source: Maryland Home Improvement Commission · 9 garage doors companies in Maryland on 1-800Deals
Water damage restoration in Maryland
Licensed by: Maryland Home Improvement Commission (MHIC), Maryland Department of Labor
Repairing or rebuilding part of a home after water damage is home improvement work, which requires an MHIC license. As of 2026, the MHIC Guaranty Fund can repay homeowners up to $30,000 for losses from poor workmanship or failure to perform the contract, but only for licensed contractors, so check the MHIC license first.
Look up a license · Source: Maryland Home Improvement Commission · 67 water damage restoration companies in Maryland on 1-800Deals
Frequently asked questions
Who licenses home improvement contractors in Maryland?
The Maryland Home Improvement Commission licenses home improvement contractors and salespersons. Home improvement includes the alteration, remodeling, repair or replacement of a building or part of a building used as a residence.
What is the MHIC Guaranty Fund?
It is a fund paid for by licensed contractors that compensates homeowners for actual losses from poor workmanship or failure to perform a home improvement contract. As of 2026, the maximum recovery is the amount paid to the contractor, up to $30,000, and it applies only to work by licensed contractors.
Does Maryland require electricians to be licensed?
Yes. The State Board of Electricians says all electrical work in Maryland must be performed by a licensed master, journeyperson or apprentice electrician, with apprentices supervised at all times.
This page is general information, not legal advice. 1-800Deals does not license, verify or endorse contractors. See all states: contractor licensing by state.