The MCLB is responsible for ensuring all marine contractors in Maryland possess the experience and knowledge to meet professional and environmental standards. Anyone performing marine contractor services—such as dredging, shoreline stabilization, or building piers and boathouses—must be licensed by the Board. While exceptions exist for property owners and government employees, most professional contractors and subcontractors are required to prove they have at least two years of experience, pass a written exam, and carry the necessary liability and workers' compensation insurance.

A Marine Contractors License is valid for two years and requires 12 hours of approved continuing education to renew. It is important ​​​to note that a Maryland Home Improvement Commission (MHIC) license is not a substitute for this specialized certification; all work within Maryland’s tidal wetlands must be performed by a contractor licensed specifically through the MCLB. For more specific details on bidding rules, employee requirements, and the full list of covered services, please visit our dedicated Frequently Asked Questions page, which can be found HERE​. ​