Joseph “Sean” Callahan
Company Principal
Senior Planner and Cambridge Branch Manager

Sean has over 20 years’ experience in land use planning and project management. Sean concentrates on environmental permitting and zoning, working directly with the clients and reviewing agencies to secure construction and subdivision approvals. This typically includes work on residential and commercial projects addressing subdivision and site plans requirements to obtain approval to build projects related to critical areas, tidal and non-tidal wetlands, forestry, and mining. As the Cambridge Branch Manager, Sean handles most of the clients for that region and takes the lead role on projects in the Dorchester County area. Mr. Callahan graduated from Salisbury State University with a degree in Geography and Regional Planning and has past work experience that includes public sector work as the Zoning Administrator for Talbot County.